JP2010104457A - Refreshment inducing system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To be able to induce a user to have refreshing conditions within a relatively short time after he or she started from relaxed conditions. <P>SOLUTION: A refresh room Rm has an image display device 2, a sound producing device 3 and an illuminator 4 for the formation of an environment that induces the user to have relaxed conditions, as his or her parasympathetic nerve gains dominance in the autonomous nerve functions. When he or she feels relaxed conditions, a sensor system 11 detects a start time of the user exhalation period, based on the output from a respiratory sensor 5, and suggests him or her a target exhalation period by means of least one of the image display device 2, sound producing device 3 and illuminator 4. The suggested target exhalation period is set up so as to induce him or her toward elongating his or her exhalation period. If he or she continues to have every exhalation for a longer period in compliance with the suggestion, he or she will be induced to have refreshing conditions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a state in which the parasympathetic nerve is dominant by inducing the user to breathe consciously after inducing the parasympathetic nerve to be dominant and the central nerve inactive in terms of the user's autonomic function. The present invention relates to a refresh guidance system and a refresh guidance method for guiding the central nervous system to an active state while maintaining it.

  Conventionally, various devices have been proposed that induce a user to a relaxed state or a refreshed state by applying a stimulus that enhances parasympathetic nerves. In this type of device, like the device described in Patent Document 1, the user's breathing environment is controlled by controlling the user's light environment and sound environment, and the breathing is controlled, so that the device is in a relaxed state. What to guide is known. There is also Patent Document 2 as a document describing controlling the light environment of a user.

  In Patent Document 1, in order to enable breathing induction without performing feedback of the user's breathing motion, a range of breathing period and expiration time are specified, and a sense for inducing breathing within the range. Activating the stimulator is described.

Patent Document 2 aims to induce a user to a refreshed state after guiding the user to a relaxed state, and controls the breathing according to the light and darkness of the light source to guide the user to the relaxed state. A technique for inducing a refresh state by increasing the average value of the maximum brightness and the minimum brightness over time is described.
JP 2002-336357 A JP 2002-336358 A

  By the way, in the techniques described in Patent Documents 1 and 2, when inducing respiration, the user is required to match both the inspiration period and the expiration period with the operation of the device (sensory stimulation device, light source). . Therefore, the user must be aware of both the inspiratory period and the expiratory period, and may feel uncomfortable due to the inability to breathe naturally.

  Patent Document 1 describes a technique for adjusting the respiratory cycle in accordance with individual differences among users, and suggests a technique for feeding back respiratory motion. Since both the inspiratory period and the expiratory period are compulsory, it takes time to get used to the induced breathing method, and there are cases in which the parasympathetic nerve remains dominant and the refresh state cannot be induced.

  The present invention has been made in view of the above reasons, and its purpose is to guide the user to a relaxed state, and then guide the user only to the expiration period to the target value, thereby allowing the user to breathe comfortably. It is an object to provide a refresh guidance system that can be guided to a refresh state while performing the above-described process, and can be guided to a high level refresh state, and further to provide a refresh guidance method that induces a refresh state.

  According to the first aspect of the present invention, a relaxation inducing means for forming an environment for inducing a user's autonomic nerve function to a state in which the parasympathetic nerve is dominant, and a user's respiration state change detected by a respiration sensor as respiration information. Respiratory information presenting means to be presented to the user is provided, and it is used by using a breathing induction means that gives a target value only during the expiration period of the user's inspiration period and expiration period, and induces the expiration period in the extension direction, and a relaxation induction means And a guidance control means for starting the operation of the breathing guidance means when it is estimated that the person's parasympathetic nerve is dominant.

  According to a second aspect of the present invention, in the first aspect of the invention, the relaxation inducing means presents an environment in which the user's autonomic nerve function is guided to a state in which the parasympathetic nerve is dominant, and is presented to a specific sensory organ of the user. The respiration information presenting means presents the respiration information to the specific sensory organ by using environment presenting means.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the relaxation guiding means includes a video presentation means for presenting a video for guiding the user's autonomic nerve function to a state in which the parasympathetic nerve is dominant, and a video presentation Video content providing means for providing a video to be presented to the means, wherein the respiratory information presentation means presents a video indicating the respiratory information to the video presentation means.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the guidance control means includes an expiration start detecting means for detecting a start point of the expiration period of the user from the output of the respiratory sensor, and the start Target value setting means for setting a target value for guiding the expiration period from the time point to a target time or more, and the breathing information presentation means presents the target value of the expiration period set by the target value setting means And

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the guidance control means includes a biological sensor that detects biological information of the user, and the user's autonomic function based on the output of the biological sensor. Autonomic nerve activity estimation means that estimates that the parasympathetic nerve is dominant with respect to the action of the respiratory induction means from the action of the relaxation induction means when the autonomic nerve activity estimation means estimates that the parasympathetic nerve is dominant It is characterized by comprising an operation shifting means for shifting to.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the guidance control means includes a time limit means for timing a specified time from the start of the operation of the relaxation guiding means, and a specified time limited by the time limit means. It is characterized by comprising an operation transition means for estimating the time when the parasympathetic nerve has become dominant and shifting from the operation of the relaxation guidance means to the operation of the breathing guidance means.

  According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the guidance control means is based on a second biological sensor that detects biological information of the user and an output of the second biological sensor. Activity estimation means for estimating an active state with respect to the user's central nerve, and operation stop means for stopping the operation of the breathing induction means when the activity estimation means estimates that the central nerve has changed from inactive to active. It is characterized by providing.

  According to the invention of claim 8, it is presumed that the environment for inducing the user's autonomic nerve function to a state in which the parasympathetic nerve is dominant is formed by the relaxation inducing means, and that the user's parasympathetic nerve has become dominant by using the relaxation inducing means. After that, the start point of the expiration period of the user is detected based on the output of the respiratory sensor, and the information indicating the target value is used only during the expiration period of the user's inspiration period and expiration period by the breathing information presentation means By presenting it to the user, the expiration period of the user is guided in the extension direction.

  According to the first and eighth aspects of the invention, after the user's autonomic nerve function is guided to a state in which the parasympathetic nerve is dominant using the relaxation guiding means, the expiration period is extended using the breathing guiding means. By adopting this configuration, a higher-level refresh state can be obtained as compared with the case where the relaxation inducing means is not used.

  Moreover, since the breathing state change detected by the breathing sensor is presented to the user as breathing information, only the expiration period is guided in the extension direction, and the inspiration period is not limited, so that the breathing cycle is induced. For the user, the restriction of breathing is reduced, and it is only necessary to concentrate the consciousness only on the length of exhalation, which facilitates the induction to the refreshed state.

  According to the configuration of the invention of claim 2, the environment presentation means for presenting the environment for guiding to the relaxed state and the breathing information presentation means for presenting the respiratory information give stimulation to the same sensory organ. By inducing breathing without inhibiting the dominant state, the parasympathetic nerve is maintained in the dominant state, and the central nervous system is inactive and relaxed from the relaxed state to the active concentrated state (refresh state). Can be migrated.

  According to the configuration of the invention of claim 3, the relaxation guiding means presents an image for guiding the parasympathetic nerve to prevail, and the breathing information presenting means presents an image showing the breathing information to the image presenting means. Therefore, the video presenting means is used both as a relaxation inducing means and a breathing information presenting means, and the induction from the relaxation state to the refresh state by inducing respiration is seamlessly performed.

  According to the configuration of the invention of claim 4, since the start time of the expiration period is detected based on the output of the breathing sensor, and the target time (target value) of the expiration period from the start time is presented by the breathing information presentation means, The user can obtain an indication as to whether or not the expiration period has reached the target time by checking the information presented to the breathing information presentation means. The user shifts to the refresh state only by adjusting the expiration so that the expiration period becomes equal to or longer than the target time.

  According to the configuration of the invention of claim 5, since it is estimated that the parasympathetic nerve is predominated by the autonomic nerve activity estimating means, the operation of the relaxation guiding means is shifted to the action of the breathing guiding means. It is possible to immediately shift to the operation of performing the respiratory induction from the moment when it becomes dominant, and after entering the relaxed state where the parasympathetic nerve is dominant, the respiratory sympathetic nerve is returned to the dominant state again without returning to the state where the sympathetic nerve is dominant. Can be guided. That is, it is possible to shift to the refresh state efficiently in a short time.

  According to the configuration of the invention of claim 6, since the breathing guidance means is operated after a specified time from the start of the operation of the relaxation guidance means, it is not necessary to monitor the autonomic nervous function, and refreshing efficiently in a short time with a simple configuration. The state can be changed.

  According to the configuration of the seventh aspect of the invention, when it is estimated that the central nervous system has been activated from the inactive state, the operation of the respiratory guidance means is stopped, so that the respiratory guidance is not continued for a longer time than necessary. When the user reaches the refresh state, the operation can be stopped, and the user can be guided to the refresh state in a relatively short time.

  As shown in FIG. 2, the breathing guidance system described in the present embodiment is used by a user in a private room environment. Hereinafter, the private room is referred to as a refresh room Rm. In the refresh room Rm, a chair 1 on which a user is seated, a video presentation device 2 that presents video at least in front of the chair 1, and an acoustic presentation device 3 that provides a sound environment to the refresh room Rm are arranged. Further, the refresh room Rm is also provided with a lighting device 4 to form an indoor light environment. As will be described later, the video presentation device 2, the acoustic presentation device 3, and the lighting device 4 have a function as a relaxation guiding unit that forms an environment for guiding the user to a relaxed state, and respiratory information that indicates the respiratory information to the user. And a function as a presentation means.

  The chair 1 preferably has a reclining function so that the user can sit in a comfortable posture, and preferably has a suitable cushioning property so as to wrap up the seated user. As shown in FIG. 1, the chair 1 is provided with a respiration sensor 5 that detects a user's respiration. In addition to the respiration sensor 5, a seating sensor 6 that detects the seating of the user, a pulsation sensor 7 that detects the heartbeat or pulse of the user, and the like may be attached to the chair 1.

  The breathing sensor 5 includes a belt that wraps around the user's abdomen and detects expansion and contraction of the abdomen. However, the breathing sensor 5 (hereinafter referred to as “expiration period”) and inspiration Any respiration sensor 5 may be used as long as the output can be separated from the period (hereinafter referred to as “inspiration period”). For example, by projecting moire fringes by infrared rays on the user's abdomen and capturing the moire fringes with a TV camera, by detecting the expansion and contraction of the abdomen from the change pattern of the moire fringes, the user's breathing is suppressed. It is also possible to use a respiration sensor that detects by contact.

  In order to prevent the user from feeling troublesome about wearing the pulsation sensor 7, the pulsation sensor 7 including a pressure sensor is arranged inside the chair 1 to detect the pulsation of the user sitting on the chair 1. You may make it do.

  The output of the respiration sensor 5 is input to the sensor processing unit 11. The sensor processing unit 11 uses the output of the respiration sensor 5 to determine whether it is an expiration period or an inspiration period.

  When the output of the acceleration sensor is used as the output of the respiration sensor 5 to determine the expiration period and the inspiration period, the period between the contraction direction (for example, positive) and the expansion direction (for example, negative) is determined. Each is associated with an expiration period and an inspiration period. However, since the output of the acceleration sensor includes noise due to body movement, etc., a threshold value in two steps, positive and negative, is set, and during the expiration period, the output of the acceleration sensor exceeds the positive threshold value, The intake period is a period until the output of the acceleration sensor falls below the negative threshold and exceeds the positive threshold.

  Since the threshold value is set, a time difference occurs between the detected exhalation period and inhalation period and the actual exhalation period and inspiration period. Therefore, the detected exhalation period and inspiration period need to be corrected. . In the present embodiment, the time difference is regarded as substantially constant, and the detected expiration period and inspiration period are shifted by a certain time corresponding to this time difference.

  In order to determine the expiration period and the inspiration period, the sensor processing unit 11 samples the output of the respiration sensor 5 at a predetermined time interval (for example, 0.1 s), and determines the degree of inflation of the abdomen based on the sampling value. It may be estimated. That is, a moving average of numerical values representing the degree of abdominal inflation detected at the time interval may be obtained, and a period when the moving average is positive may be an expiration period and a period when the moving average is negative may be an inspiration period.

  For the moving average, for example, (x1 + x2 + x3) / 3, (x2 + x3 + x4) / 3 are used for the time series data x1, x2, x3,. That is, instead of using all the data to be averaged as new data, an average obtained by shifting data one by one is used. However, how many data averages are used is appropriately selected.

  The video presentation device 2 includes a screen 8 that presents a video that is visible to the user seated on the chair 1. The size and shape of the screen 8 can be set so that an image can be developed over the entire field of view of the user, and the user can feel immersive. Accordingly, the screen 8 can be planar, but is desirably concave when viewed from the user. However, it may be a concave surface in the horizontal direction, and may not be a curved surface in the vertical direction. In short, it becomes the shape of the inner surface of the cylindrical wall surface.

  When the screen 8 is flat, a flat panel display such as a plasma display or a liquid crystal display can be used. However, when the screen 8 is concave, the wall of the refresh room Rm is used as a transmissive screen. And adopting a configuration in which an image is projected onto a screen from a projector arranged outside the refresh room Rm. In addition, when it is possible to provide flexibility like an EL display formed in a sheet shape, this type of display can be used as the video presentation device 2.

  The video presented by the video presentation device 2 is given by the video content provider 12. A specific example of the video provided by the video content providing unit 12 will be described later.

  As the acoustic presentation device 3, a plurality of (eight in the example shown in FIG. 2) speakers 9 arranged on the ceiling surface, floor surface, and wall surface of the refresh room Rm so as to surround the chair 1 are used. Specifically, four of the eight speakers 9 are arranged in front of the user so that a sound image can be formed at any position in front, rear, left, right, up and down, and the remaining four are placed behind the user. It is arranged at the four corners of the wall. The four speakers 9 arranged in the front are arranged on the floor surface and the ceiling surface on the left and right sides so as not to disturb the image presented on the screen 8 of the image presentation device 2. Moreover, you may provide the speaker 9 which outputs a background sound using with the speaker 9 mentioned above. The background sound can be mixed with the sound output from the speaker 9 and output.

  The sound presented by the acoustic presentation device 3 is given by the acoustic content providing unit 13. A specific example of the sound presented by the acoustic content providing unit 13 will be described later.

  The illuminating device 4 includes an overall lamp 4a arranged near the ceiling to illuminate the entire refresh room Rm, a spot lamp 4b that illuminates only the periphery of the chair 1, and a side of the chair 1 that is arranged by the user. And a rhythm lamp 4c that changes the light output with time so as to induce a respiratory cycle. The light emission color of the rhythm lamp 4c is blue or light blue, which is said to have a calming effect. The whole lamp 4a, the spot lamp 4b, and the rhythm lamp 4c are connected to the dimmers 21a, 22a, and 23a, respectively. Therefore, by providing a dimming signal from the illumination control unit 14 to the dimmers 21a, 22a, and 23a, it is possible to control the light outputs of the whole lamp 4a, the spot lamp 4b, and the rhythm lamp 4c, respectively. .

  The sensor processing unit 11, the video content providing unit 12, the audio content providing unit 13, and the illumination control unit 14 described above add necessary hardware to the personal computer, and provide data and programs that enable operations described later. It is realized by.

  Hereinafter, a technique for associating the expiration period and the inspiration period detected by the sensor processing unit 11 based on the output of the respiration sensor 5 with the operations of the video content providing unit 12, the acoustic content providing unit 13, and the illumination control unit 14 will be described. . The guidance control unit 10 performs processing for associating the expiration period and the inspiration period detected by the sensor processing unit 11 with the operations of the video content providing unit 12, the acoustic content providing unit 13, and the illumination control unit 14.

  Here, the illumination control unit 14 controls the whole lamp 4a and the spot lamp 4b regardless of the expiration period or the inspiration period. That is, the lighting control unit 14 turns on the whole lamp 4a to illuminate the room when the user enters and leaves the refresh room Rm, and when the seating sensor 6 detects that the user is seated on the chair 1, the lighting control unit 14 turns on the whole lamp 4a. The user's surroundings are darkened by reducing the light output.

  The spotlight 4b is used for the purpose of illuminating only the periphery of the user or illuminating only the vicinity of the user's hand when the user is seated on the chair 1. If only the periphery of the user is illuminated by the spotlight 4b, the difference in brightness between the vicinity of the user and the wall surface away from the user can be increased so that the wall surface of the refresh room Rm does not stand out.

  By the way, the guidance control unit 10 sets the target time in the expiration period of the expiration period and the inspiration period detected by the sensor processing unit 11, and the video content so that the user can achieve the expiration period that is equal to or longer than the target period. An instruction is given to the providing unit 12, the acoustic content providing unit 13, and the illumination control unit 14. That is, respiration is not induced for both the exhalation period and the inspiration period, but respiration is induced by paying attention only to the duration when exhaling. For this reason, the sensor processing unit 11 functions as an expiration start detection unit that detects the start time of the expiration period, and also functions as a target value setting unit that sets a target time of the expiration period. The inhalation period is about 3 to 5 s, for example, and the maximum value of the target time for the expiration period is set to about 6 to 9 s, for example.

  If the user is conscious of both the exhalation period and the inspiration period, the user may be tense and the exchange nervous system may be dominant, but giving the user a sense of tension only during the exhalation period The central nervous system can be activated with the accessory switching system predominate. Such cases are known as breathing techniques such as yoga and zazen.

  When the user sits on the chair 1, the guidance control unit 10 starts an operation for guiding breathing. In other words, the seating on the chair 1 is detected by the seating sensor 6, and the operation starts when the specified time elapses. Alternatively, a configuration may be adopted in which an operation unit (not shown) is attached to the chair 1 and the operation is started when the operation unit is operated after sitting.

  When the operation starts, the guidance control unit 10 guides the user to a relaxed state (a state in which the parasympathetic nerve is dominant, and a state in which the central nerve is inactive among the states in which the α wave in the electroencephalogram is expressed). Presentation is instructed to the video content providing unit 12 and the audio content providing unit 13.

  The video provided by the video content providing unit 12 is, for example, a video reminiscent of the universe, the seabed, forests, etc., based on the knowledge that it is easy to shift the user to a relaxed state when showing a natural landscape. This type of video is known to predominate the parasympathetic nerve and deactivate the central nerve. Further, by using a three-dimensional image as an image, a stereoscopic effect is given together with the fact that the screen 8 is concave. Furthermore, a computer graphics image having no meaning for enhancing a three-dimensional effect may be synthesized.

  The guidance control unit 10 adjusts at least some of the light colors of the overall light 4a, the spot light 4b, and the rhythm light 4c according to the content of the video provided by the video content providing unit 12. For example, the illumination light is blue for an image of the space or the seabed, and the illumination light is green for an image of a forest.

  Although it is possible to display a still image at a fixed position, if a moving image is generated on the screen 8 by changing the area displayed on the screen 8 for the still image, a sense of movement is given to the user. The effect of inducing relaxation is increased. The moving direction of the video is the left-right direction, and the video is moved so that an angle change of about 1 to 5 degrees per second as seen from the user occurs. To give a sense of movement, two types of video are displayed in a superimposed manner, and one video is moved to the right when viewed from the user, and the other video is moved to the left when viewed from the user. Good. For example, in an image reminiscent of the universe, nebulae and nearby stars move to the right, and distant stars move to the left. The direction in which the video is moved may be the vertical direction.

  On the other hand, as the sound provided by the acoustic content providing unit 13, so-called healing music, a quiet sound including 1 / f noise existing in the natural world (buzzing sound or leaf rubbing sound), or the like is used. This type of sound is thought to predominate the parasympathetic nerve and deactivate the central nerve. This sound continues to be output from the speaker 9 as a background sound even during the induction of breathing, which will be described later. The sound that becomes the background sound is basically output only from the dedicated speaker 9 that outputs the background sound. However, when a background sound is output from another speaker 9 that is not the background sound speaker 9, the amplification factor of the audio signal applied to each speaker 9 is kept constant for the background sound.

  The guidance control unit 10 causes the video content providing unit 12 and the sound content providing unit 13 to perform the above-described operation for a specified time in order to make the parasympathetic nerve dominant and deactivate the central nerve with respect to the autonomic nerve function. In addition, the illumination control unit 14 controls the illumination device 4 in accordance with the video and sound provided by the video content providing unit 12 and the acoustic content providing unit 13. Since this operation of the guidance control unit 10 is an operation that leads the user to a relaxed state, this operation is hereinafter referred to as an operation of “relaxation mode”.

  That is, the guidance control unit 10 performs relaxation guidance together with the video content providing unit 12, the acoustic content providing unit 13, the illumination control unit 14, the video presentation device 2, the acoustic presentation device 3, and the illumination device 4 when performing the relaxation mode operation. It functions as a means, and the environment of guiding the user's autonomic nerve function to the state where the parasympathetic nerve is dominant is formed by the operation of the relaxation guiding means. The video content providing unit (video content providing unit) 12, the audio content providing unit 13, and the illumination control unit 14 function as environment providing units. The video presenting device (video presenting unit) 2, the acoustic presenting device 3, and the lighting device 4 are provided. Functions as an environment presentation means.

  By performing the operation in the relax mode, the user seated on the chair 1 is guided to a relaxed state, and the heart rate and blood pressure decrease. The operation of the relaxation mode is defined by time (that is, the relaxation mode is finished at the specified time), the pulsation is monitored by the pulsation sensor 7, and the relaxation state is reached by the trend of the heart rate (or pulse rate). The relaxation mode operation may be terminated when the relaxation state is reached. Alternatively, the length of the expiration period or the respiratory rate detected by the sensor processing unit 11 is measured based on the output of the respiratory sensor 3, and when the expiration period reaches a specified length, the operation in the relaxation mode is terminated. Is also possible.

  The operation of determining that the relaxation state has been reached by using the heartbeat or pulse detected by the pulsation sensor 7 follows the following principle. That is, the frequency of the electrocardiogram (ECG) and the pulse wave is said to reflect the activity of the autonomic nervous system. For example, if the frequency is obtained by measuring the time interval for each beat in the electrocardiogram, The power of the frequency component of 0.04 to 0.15 Hz reflects the degree of enhancement of the sympathetic nerve (LF), and the power of the frequency component of 0.15 to 0.4 Hz reflects the degree of enhancement of the parasympathetic nerve (HF). It is said that you are doing. The time interval is obtained from the R wave or a wave time interval (RRI, aaI) included in the electrocardiogram.

  Now, as shown in FIG. 3, it is assumed that the R wave is focused, and the time interval Tr of the R wave is obtained. In order to obtain the time interval Tr of the R wave, it is necessary to obtain the peak position of the R wave, but since this technique is well known, it will not be described in detail here. As an example, using the fact that the amplitude of the R wave is larger than that of other components, a period in which the peak value of the R wave is included with an appropriate threshold is extracted, and the average time of the period is regarded as the time of the peak position. There is a way.

  When the rate of increase (inclination) per unit time is determined for the components of the parasympathetic nervous system (that is, 0.05 to 0.4 Hz) in the obtained time interval Tr, the parasympathetic nervous system is obtained when the inclination exceeds a prescribed threshold value. It is possible to determine that is sufficiently enhanced. That is, when the inclination exceeds the threshold, it can be estimated that the state is relaxed.

  Further, regarding the obtained time interval Tr, the horizontal axis is plotted as the nth time interval Tr (n), and the vertical axis is plotted as the (n + 1) th time interval Tr (n + 1) (this analysis method is called Lorentz plot). For example, as shown in FIG. It is also possible to estimate the relaxed state by using the distributed state of this distribution. That is, the distance C shown in FIG. 4 becomes longer when the parasympathetic nervous system becomes dominant (because high frequency components increase), and the dispersion S becomes larger (the frequency range when the sympathetic nervous system is enhanced is wide). From). Therefore, it can be estimated that the user is in a relaxed state by comparing the distance C and the variance S with a prescribed threshold value.

  Therefore, it is possible to know that the user has reached the relaxed state by using the output of the pulsation sensor 7 in the relax mode. It is also possible to predetermine the time until the end of the relaxation mode by accumulating this kind of data in advance and estimating the time for the parasympathetic nerve to sufficiently increase. Thus, by ending the relax mode when the user reaches the relaxed state, it is possible to prevent the relaxed state from being hindered by continuing the relaxed state for a long time.

  As other conditions for ending the relax mode, the relaxed state is monitored by the pulsation sensor 7 and a time limit is set. When it is estimated that the relaxed state has been reached within the time limit, You may make it complete | finish the operation | movement of relax mode at the time of expiration. In this case, if the user does not reach the relaxed state within the time limit, it is considered that the user was in a high tension state before using the refresh room Rm, so the relax mode is continued by changing conditions such as changing the video and sound. .

  In order to estimate that the user has reached a relaxed state in the relax mode, the heart rate (or pulse rate) measured by the pulsation sensor 7 is used, the length of the expiration period measured by the respiration sensor 3 or breathing In addition to using numbers, a technique for measuring electroencephalogram, EOG (ocular), EMG (myoelectric), cerebral blood flow, or the like may be used.

  That is, a living body sensor (a respiration sensor 3, an electroencephalograph, an electromyograph, a blood flow meter, or the like) that detects the living state of the user is used, and the guidance control unit 10 is based on the output of the living body sensor. It functions as an autonomic nerve activity estimation means for estimating that the parasympathetic nerve is dominant in the autonomic nervous system.

  If a biological sensor other than the respiration sensor 3 is used, the relaxed state can be detected with high accuracy. However, since the user feels uncomfortable by attaching an electrode or the like, a technique that does not cause the user to feel discomfort as much as possible. It is required to measure.

  As described above, in the relax mode, the relax mode is terminated when it is estimated that the relaxed state has been reached from the physiological state measured for the user or when the time defined by the relax mode (including the time limit) has been reached. Therefore, the guidance control unit 10 performs at least one of the operation of the autonomic nervous activity estimation unit that estimates the relaxed state and the time unit that limits the specified time.

  When the operation in the relax mode ends, the guidance control unit 10 shifts to an operation that induces respiration. Hereinafter, this operation is referred to as “respiration induction mode” operation.

In the operation of the respiratory induction mode, the state in which the parasympathetic nerve is dominant in the autonomic nerve function is maintained, but the central nerve is activated by inducing respiration. In other words, the state is called a refreshed state (a state in which α ₂ waves that are fast components (10 to 13 Hz) among α waves (8 to 13 Hz) in the electroencephalogram are expressed and the central nerve is active) or a state of concentration. Induce.

  When the operation of the breathing guidance mode is performed, the guidance control unit 10 performs the video content providing unit 12, the acoustic content providing unit 13, the illumination control unit 14, the video presentation device 2, and the acoustic presentation in the same manner as when performing the relaxation mode operation. Together with the device 3 and the lighting device 4, it functions as a breathing guidance means. When functioning as a breathing induction means, the expiration period of the user is guided in the extension direction.

  Therefore, the guidance control unit 10 functions as a guidance control unit that starts the operation of the breathing guidance unit at the time when it is estimated that the user's parasympathetic nerve is dominant due to the use of the relaxation guidance unit. In addition, since the sensor processing unit 11 operates as a breath start detection unit and a target value setting unit, the sensor processing unit 11 also functions as a guidance control unit.

  As described above, when it can be estimated that the user has reached the relaxed state by one of the autonomic nerve activity estimating means and the time limit means, the guidance control unit 10 shifts from the relaxation mode to the breathing guidance mode. Therefore, the guidance control unit 10 also has a function as an operation transition unit.

  In the breathing guidance mode, the video content providing unit 12 generates a guiding figure Im (see FIG. 5) whose shape changes in accordance with the user's breathing detected by the breathing sensor 5, and displays it on the screen 8 of the video presentation device 2. The guide graphic Im is displayed so as to be superimposed on the image used in the displayed relax mode.

  The guide graphic Im shown in FIG. 5 is configured as a set of a large number of cubic seed graphics Is having a minute volume (in FIG. 5, for ease of explanation, the image is represented in two dimensions and the seed graphics Is. Is described in a square shape). FIG. 5 shows a change in the position of the seed figure Is with time. Time passes from the upper left end to the lower side, and after reaching the lower end of the left row, the time goes from the upper end to the lower side of the central row. Elapsed, and after reaching the lower end of the center row, time passes from the upper end of the right row downward.

  In the illustrated example, the seed figure Is is a two-dimensional lattice (in the illustrated example, a square lattice in which the aspect ratio of the lattice is 1: 1, but the aspect ratio of the lattice may be appropriately set. When the starting point of the inhalation period is detected from the state of being arranged on the lattice points of the original lattice), the induced figure Im expands, the seed figure Is is dispersed, and the distance between the seed figures Is increases. (See left column). When the seed figure Is is dispersed, the seed figure Is is arranged in a random or random manner without being aligned. After that, when the expiration period starts, the seed figure Is starts to converge, and when the period defined as the target time of the expiration period ends, the seed figure Is is arranged on the lattice points of the original two-dimensional lattice. (Center row). A state in which the seed figure Is is in an ordered arrangement is referred to as a state in which the induced figure Im is completed.

  If the inspiration period of the user is started before the period defined as the target time is over, the seed figure Is does not align on the grid points of the two-dimensional grid, so that the guide figure Im reaches a completed state. Previously, the seed figure Is is dispersed again, and the user recognizes that the expiration period has not reached the period defined as the target time. On the other hand, when the expiration period of the user continues even after the period defined as the target time has ended, the state where the guide graphic Im is completed continues (right column), and the inspiration period starts next. Then, the seed figure Is starts to be dispersed again (lower right).

  The period as the target time of the expiration period varies depending on the user's autonomic nervous function and the state of the central nervous system, and also varies depending on individual differences for each user. Therefore, it is desirable to set the target time at the beginning of the breathing induction mode based on the expiration period obtained from the output of the breathing sensor 5 during the relaxation mode. The target time of the expiration period is gradually increased in the period of the breath induction mode. However, an upper limit is set for the target time of the expiration period. It is desirable to determine the upper limit of the target time of the expiration period based on the expiration period measured during the relax mode as well as the target time at the beginning of the breath induction mode.

  In the period of the breath induction mode, the target time of the expiration period is gradually extended on the condition that the induction figure Im is completed. That is, the target time of the expiration period is set in a plurality of stages, and the final value that the target time should reach is defined. The final value is preferably set based on the breathing function of the user obtained from the output of the breathing sensor 5 during the relax mode period, but may be appropriately selected from a plurality of predefined values.

  In the present embodiment, when the induction figure Im is completed a plurality of times (for example, three times) continuously when the target time of the expiratory period is set to a certain value, the ratio that defines the target time of the expiratory period ( For example, 20%) or a specified time (for example, 1 second) is extended, and this procedure is repeated until the target time of the expiration period reaches the final value. However, if the final value of the target time is not reached within the predetermined time, the breathing induction mode is terminated.

  It should be noted that points are defined in the target time of the expiration period, the points defined in accordance with the target time are added when the guide graphic Im is completed, and the total points are displayed on the screen 8 at the end of the breath induction mode. It may be. If such a point is displayed, the user can objectively recognize the degree of acquisition of the respiratory state, which is motivated to acquire the respiratory state.

  In the above-described operation, in order for the user to complete the guide graphic Im, the user needs to adjust his / her breathing so that the expiration period is longer than the target time. Expecting satisfaction (or by the desire to complete the guide graphic Im), if the breathing time is extended, the expiration period is guided to the final value of the target time without being conscious Become.

  In addition, since the dispersion and convergence of the seed figure Is are performed in accordance with the user's breathing, even if the expiration period does not reach the target time, the induction figure Im is not completed, and It can be used continuously without interrupting the user's consciousness of adjusting the expiration period. Also, the target time is given only during the expiration period, and the inspiration period is free for the user, and even if a large amount of breath is exhaled to lengthen the expiration period, the necessary amount of air can be inhaled during the inspiration period. Therefore, it is possible to breathe more comfortably than when the target time is defined for both the expiration period and the inspiration period.

  By the way, in the breathing guidance mode, the acoustic content providing unit 13 and the illumination control unit 14 are controlled in synchronization with the dispersion and convergence of the guiding figure Im. In other words, the video presentation device 2, the acoustic presentation device 3, and the lighting device 4 function as a breathing information presentation unit for showing breathing information indicating a breathing state change between the expiration period and the inspiration period to the user. The breathing information presenting means presents the breathing information to the user through the same sensory organ (sight, hearing, etc.) as the environment presenting means.

  In the breathing guidance mode, the sound content providing unit 13 outputs a sound resembling a breathing sound from the speaker 9, and the illumination control unit 14 changes the light output of the rhythm lamp 4c. The breathing information presenting means presents the target time of the expiration period set by the target value setting means (sensor processing unit 11).

  The sound provided by the sound content providing unit 13 is processed with white noise to generate a sound that resembles the expiration sound and the inspiration sound (filtering the white noise to change the frequency characteristics of the expiration sound and the inspiration sound) For example, the expiratory sound includes a frequency component higher than that of the inspiratory sound), and a sound similar to the expiratory sound is output from the speaker 9 from the start of the expiratory period, and inhaled from the start of the inspiratory period A sound resembling the sound is output from the speaker 9. Here, if the position of the sound image is moved, it is possible to enhance the user's immersive feeling for breathing and enhance the effect of inducing breathing.

  For example, the volume of the front and rear speakers 9 (amplification rate of the audio signal) is adjusted so that the sound image moves from the front to the rear during the inspiration period and the sound image moves from the rear to the front during the expiration period. To do. By moving the sound image back and forth as described above, it is possible to give the user a feeling of drawing air when inhaling and to give the user a feeling of sending out air when exhaling. Therefore, when the expiration period has reached the target time, the sound image may move from the rear to the front of the user, and the sound heard from the rear may be heard from the front. Alternatively, when the expiration period reaches the target time, another sound (for example, a sound “pololone”) may be output.

  Further, when the sound image is located behind the user, the width of the sound image in the left-right direction may be widened, and when the sound image is located in front of the user, the width of the sound image in the left-right direction may be narrowed. Such control can be realized by the arrangement of the speakers 9 (an arrangement in which the left and right intervals of the front speakers 9 are narrower than the left and right intervals of the rear speakers 9), but the phase of the audio signal input to the speakers 9 is controlled. It may be realized by doing.

  Note that it is not essential that the sound provided by the acoustic content providing unit 13 be a sound that resembles an exhalation sound or an inspiration sound, and may be a sound that indicates the start of the expiration period and the inspiration period. However, using sounds resembling exhalation sounds and inspiration sounds can increase the arousal effect because the user can concentrate their consciousness without making the user feel uncomfortable.

  Further, the illumination control unit 14 increases the light output of the rhythm lamp 4c with the passage of time in the inspiration period, and decreases the light output of the rhythm lamp 4c with the passage of time in the expiration period. Therefore, it is possible to produce a feeling that the lungs expand or contract due to breathing by changing the amount of light, so that the user can feel immersive and concentrate on breathing.

  Here, not only the rhythm light 4c but also the overall light 4a and the spot light 4b may be adjusted in synchronization with the rhythm light 4c. Further, the luminance of the image displayed on the screen 8 of the video presentation device 2 by the video content providing unit 12 may be changed in accordance with the change in the light output of the rhythm lamp 4c. The target time of the expiration period using such illumination may be that the room is darkened from a bright state. Furthermore, the light distribution by the lighting device 4 may be changed with the movement of the sound image by the acoustic presentation device 3. For example, the position having the maximum illuminance may be associated with the position of the sound image by configuring the whole lamp 4a with multiple lamps or using the movable spot lamp 4b.

  When the target time is given by sound or lighting, the above-mentioned technology cannot make the user clearly perceive that the expiration period has reached the target period, so the duration of the expiration period has reached the target period In order to notify the user, a sound notifying that the target time has been reached in addition to the breathing sound is added during the expiration period, or at least the total light 4a, spot light 4b, and rhythm light 4c when the target time is reached. One lighting state (including light color) may be changed, or a separate indicator lamp may be lit.

  With the above-described operation, when a user is given a stimulus for inducing respiration so as to be in a predetermined breathing state, the user's respiration information is included in the stimulus. That is, the breathing guidance means includes a breathing information presentation means including the video presentation device 2, the sound presentation device 3, and the lighting device 4, and the breathing sensor 5. The breathing information detected by the breathing sensor 5 is used as the breathing information presentation means. Will be presented through. The respiration information presenting means is also used as the relaxation guiding means.

  With this function, the user is not simply aware of breathing, but the breathing information is clearly perceived clearly and visually, and it is easy to induce the intention to reach the target state as a result. In other words, the perception of breathing and the induction of breathing are seamlessly performed, so that it is possible to guide the user's breathing information (breathing state change) to a target state unreasonably and unconsciously.

  Regardless of the type of perception to be stimulated and the specific contents, the above-described operation can be considered as shown in FIG. 6 as a change in information that gives stimulation in the inspiration period and the expiration period. FIG. 6 shows information A that mainly expresses expiration and information B that mainly expresses inspiration. Only information A is presented at the start of the inspiration period, and information is displayed as time passes in the inspiration period. The ratio of B is increased. Further, only the information B is presented at the start of the expiration period, and the ratio of the information A is increased with the passage of time in the expiration period.

  In the example described above, the information A corresponds to, for example, a state in which the seed figure Is is aligned in the guidance figure Im, and the information B corresponds to, for example, a state in which the seed figure Is is most dispersed in the guidance figure Im. In this way, the inspiration period and the expiration period can be expressed as different information A and B by the same type of stimulation, and the information indicating the inspiration period and the expiration period can be given continuity. In FIG. 6, the ratio between the information B and the information A is not changed until the next inspiration period is started after the expiration of the expiration period target time. This operation corresponds to a state in which the position of the seed figure Is does not change as in the right column in FIG.

  In the operation example of FIG. 6, the end point of the expiration period is the start point of the inspiration period. However, if the expiration period continues after the target time, information is transferred during the transition from the expiration period to the inspiration period. Since the change is started after the state where A does not change continues for a while, a discontinuity may be given. That is, as can be seen with reference to FIG. 5, the seed figure Is is moved in a converging direction before the target time is reached in the expiration period, and the seed figure Is is moved after the target time is reached in the expiration period. Thus, the state where the shape of the guiding figure Im is not deformed continues. At this time, sound and lighting are not changed after the target time is reached. In this way, the discontinuity is caused by continuing the period in which the change stops.

  In order to suppress the discontinuity, an operation of starting the change of the information A from the time when the target time is reached can be employed. However, in this operation, since the operation proceeds to the operation of the inhalation period regardless of the expiration period, the user may feel uncomfortable if the expiration period continues for a long time after reaching the target time.

  Therefore, after reaching the target time in the expiration period, it is desirable to further deform the shape of the guide graphic Im until the start of the inspiration period. For example, in the period after the target time is reached in the expiration period, as shown in the right column of FIG. 7, as the time passes, the left and right width dimensions of the seed figure Is are reduced and the left and right sides of the seed figure Is The guiding figure Im is changed so as to reduce the interval. In addition to this deformation, the luminance may be reduced with the passage of time. Alternatively, after reaching the target time, the upper and lower parts of the completed guiding figure Im are deformed so as to be twisted with the passage of time, or the middle part in the vertical direction of the guiding figure Im with the passage of time. It may be deformed so that it is constricted. There is no restriction | limiting in particular about the shape at the time of making it deform | transform, For example, you may deform | transform a cube into a cylinder or a sphere.

  In any case, it is ensured that the deformation of the guide figure Im does not stop even after the target time is achieved, and that the target time has been reached by changing the deformation rules before and after reaching the target time. Users can be made aware. In addition to changing the shape of the guiding figure Im (overall shape and movement of the seed figure Is), a configuration in which the color of the seed figure Is is changed (white → yellow → green, etc.) may be adopted.

  In the above example, the sensor processing unit 11 detects the inspiration period and the expiration period using the output of the respiration sensor 5 and the target time of the expiration period is defined by the duration of the expiration period. The expiratory volume during the expiratory period may be detected and the target of the expiratory period may be defined by the expiratory volume during the expiratory period. Moreover, what is necessary is just to show a user whether the expiration | expired_air volume reached target amount similarly to the above-mentioned operation example.

  Furthermore, since the expiratory volume changes with the passage of time, the video, sound, and illumination may be controlled to indicate the change in the expiratory volume. For example, in the case of an image, the guide graphic Im is deformed so as to shrink with the passage of time in the same manner as the deformation pattern of the guide graphic Im after reaching the target time shown in FIG. The decrease in the air amount is associated with the guidance graphic Im), and the guidance graphic Im may be erased when the expiration amount reaches the target amount.

  If it is a sound, gradually decrease the volume as the expiratory volume increases during the expiratory period (that is, associate the decrease in the air volume in the lungs with the volume), and turn off the sound when the expiratory volume reaches the target volume Good. For lighting, a plurality of lighting fixtures are arranged, and the light output is gradually reduced with the increase of the expiratory volume during the expiratory period, and some lights are turned off when the expiratory volume reaches the target amount. Just do it. Alternatively, lighting that can change the emission color by color mixing or the like is used, and the light color is gradually changed as the expiration amount increases during the expiration period. When the expiration amount reaches the target amount, a specific light color is obtained. To control.

  As described above, when the user sits on the chair 1 in the refresh room Rm and the operation of the relax mode is started, the user is dominant in the parasympathetic nerve and the central nerve is inactive in the autonomic nerve function. Induced to relax. After that, the operation in the breath induction mode for adjusting the breathing is started, and the expiration period of the user is guided to the target time by the image, sound, and lighting, so that the user has the parasympathetic nerve for the autonomic nerve function and It is induced to a concentrated state where the central nervous system is active. Therefore, after using the refresh room Rm, the user is awakened in brain function.

  In addition, by inducing the user into a relaxed state and then inducing a concentration state, the induction of respiration is started by reducing stress compared to inducing respiration from a stress state where sympathetic nerves are dominant. It is thought that the concentration state can be reached in a short time. Therefore, when the sympathetic nerve is dominant and the brain function related to memory and thought is reduced, the brain function related to memory and thought is activated by using the refresh room Rm in a short time. Is possible.

  Just as the time limit is set in the relax mode, the time limit is also set in the breath induction mode, and if the expiration period does not reach the target time within the time limit, the time limit expires. The breathing induction mode is also terminated.

In determining whether to end the breathing induction mode, it may be estimated that the central nervous system of the user has shifted from inactive to active by monitoring the physiological state of the user. That is, in addition to indirectly estimating the central nervous system by measuring the pulsation rate, pulsation rate, respiration rate, etc., electroencephalograms, EOG (ophthalmography), EMG (myoelectricity), cerebral blood flow, etc. The timing of termination of the respiratory guidance mode may be determined by measuring with an electromyograph, a blood flow meter, or the like. For example, by measuring the rate of appearance of alpha ₂ wave if electroencephalogram, it is possible to know the degree of activity of the central nervous system.

  The above-described estimation of the degree of activity of the central nerve is performed by the activity estimation unit in the guidance control unit 10, and the operation stop unit in the guidance control unit 10 determines the end timing of the respiratory guidance mode.

  By estimating whether the user's central nervous system is inactive or active in this way, it is possible to accurately determine the timing to end the respiratory induction mode, so the respiratory induction mode can be changed even after the user reaches a concentrated state. The waste of continuing can be eliminated. That is, when it is estimated that the user has reached a concentrated state, the use time of the refresh room Rm is shortened by ending the breathing induction mode, and the central nervous system is deactivated from the activity by continuing the breathing induction mode. Returning to activity can be prevented.

By the way, the following mechanism is considered about the concentration state being induced by the breathing method. That is, when the consciousness is concentrated on the breathing method, on the ventral side of the cerebral cortex, the entire prefrontal area of the brain is activated, thereby suppressing the ACh nerve in the frontal base and further activating the serotonin nerve. Α waves are expressed by suppressing activation of the cerebral cortex. On the other hand, since the visual and auditory reaction systems are activated in the open eye state, the activated state continues on the dorsal side of the cerebral cortex and β waves are expressed. That is, an α wave is generated even though the eyes are open and awake. The α wave expressed by the breathing method is different in nature and generation mechanism from the α wave generated when the eyes are closed, and becomes a fast α ₂ wave among the α waves. In other words, if the expression of α ₂ waves by breathing, central nervous system it can be said that the state is active in the parasympathetic dominance of state (Reference: Hideho Arita: Zen meditation and Sentoronin nerve, Toho Medical Association Journal, vol. 46, No. 4 (1999)).

Therefore, in order to determine when to terminate the breathing guidance mode as described above, it can be used the rate of appearance of alpha ₂ wave in EEG. Further, the case where performing breathing, and if not performed breathing, was measured power of alpha ₂ wave in three conditions as during task implementation, alpha ₂ wave power when performing a breathing It was found that is most likely to appear. Furthermore, the knowledge that the power of the α ₂ wave gradually increases when breathing was performed was obtained. Therefore, the increase rate per unit time is monitored for power of alpha ₂ wave of electroencephalogram, it is determined that the user has reached the focused state when the threshold is exceeded this rate of increase defined, exit the respiratory inductive mode You may make it make it.

  In the above configuration example, the chair 1 on which the user is seated is arranged in the refresh room Rm, but a bed may be used instead of the chair 1. Further, in the configuration example described above, the speaker 9 is arranged so as to surround the chair 1 so that a sound image can be formed at an arbitrary position in the refresh room Rm. It is also possible to adopt a configuration in which the position of the sound image is controlled in a pseudo manner by arranging the position and controlling the phase and frequency characteristics of the acoustic signal applied to the speaker 9. If this technology is adopted, the number of speakers 9 can be reduced, and the refresh room Rm can be reduced in size. Alternatively, by arranging the speaker 9 on the chair 1, it is possible to save the space for arranging the speaker 9.

  The guide graphic Im can be configured by using a seed figure Is having a different shape such as a string in addition to a structure using a minute seed figure Is. In addition, the state in which the image is distorted or out of focus is handled in the same manner as the state in which the seed figure Is is dispersed, and the guidance figure Im is completed in the state where the image is not distorted or in focus. You may make it handle as a state.

  As breathing information presentation means for showing breathing information to the user in the breathing guidance mode, visual means (screen 8 of video presentation device 2, overall light 4a of lighting device 4, spotlight 4b, rhythm light 4c), sound Although the target means (speaker 9 of the sound presentation device 3) has been exemplified, it is also possible to constitute a breathing information presentation means for stimulating sensory organs other than eyes and ears. For example, a change in temperature or contact with the skin may be used. When using a temperature change, a blowing device for warm air and cold air may be provided, and the blowing temperature may be changed during the expiration period and the inspiration period. When using contact with the skin, the contact pressure may be changed during the expiration period and the inspiration period, or the temperature of the contact part may be changed.

  When the temperature change can be applied in the refresh room Rm, the room temperature is set so that the user feels warm in the relax mode, and the room temperature is set so that the user feels cool in the breath induction mode. It is desirable to set. In addition, when the humidity of the refresh room Rm can be adjusted, a comfortable humidity of about 45 to 60% (preferably about 50%) is set in the relax mode. Furthermore, when the formation of airflow is enabled in the room of the refresh room Rm, the airflow is controlled along with the movement of the video and sound images. For example, when the video moves left and right in the relax mode, a left and right airflow is formed, and when the sound image moves back and forth in the breathing guidance mode, forward and backward airflows are alternately formed.

It is a block diagram which shows embodiment. It is a perspective view same as the above. It is a figure which shows the example which uses an electrocardiogram in the same as the above. It is a figure which shows the example using the Lorentz plot used in the same as the above. It is operation | movement explanatory drawing which shows the example of a change pattern of the guidance figure used for the same as the above. It is a figure which shows the idea of the presentation method of the information on a respiratory state in the same as the above. It is operation | movement explanatory drawing which shows the other example of a change pattern of the guidance figure used for the same as the above.

Explanation of symbols

1 chair 2 video presentation device (video presentation means, relaxation guidance means, breathing information presentation means)
3 Sound presentation device (relaxation guidance means, breathing information presentation means)
4 lighting devices (relaxation guidance means, breathing information presentation means)
4a Overall light 4b Spot light 4c Rhythm light 5 Respiration sensor (biological sensor)
6 Seating sensor 7 Beat sensor (Biological sensor)
8 screen 9 speaker 10 guidance control unit (guidance control means, autonomic nerve activity estimation means, time limit means, motion transition means, activity estimation means, motion stop means)
11 Sensor processing unit (exhalation start detection means, target value setting means)
12 Video content presentation unit (relaxation guidance means, breathing guidance means, breathing information presentation means)
13 Sound content presentation unit (relaxation guidance means, breathing information presentation means)
14 Lighting control unit (relaxation guidance means, breathing information presentation means)
Rm Refresh Room

Claims (8)

  Relaxing guidance means that creates an environment that induces the user's autonomic nervous function to a state where parasympathetic nerves predominate, and respiratory information that presents the user's respiratory state change detected by the respiratory sensor as respiratory information to the user The user's parasympathetic nerve is dominant by using a breathing induction means that provides a target value only during the expiration period of the user's inspiration period and expiration period and induces the expiration period in the extension direction, and a relaxation induction means. A refresh guidance system comprising: guidance control means for starting the operation of the breathing guidance means at a point in time when it is estimated that it has become.   The relaxation inducing means includes an environment presenting means for presenting an environment for inducing the user's autonomic nerve function to a state in which parasympathetic nerve is dominant, on a specific sensory organ of the user, and the breathing information presenting means is an environment presenting The refresh guidance system according to claim 1, wherein the breathing information is presented to the specific sensory organ by using means.   The relaxation guiding means includes a video presentation means for presenting a video for guiding the user's autonomic nervous function to a state in which the parasympathetic nerve is dominant, and a video content providing means for providing a video to be presented to the video presentation means, The refresh guidance system according to claim 1, wherein the breathing information presenting unit presents an image indicating the breathing information to the image presenting unit.   The guidance control means includes an expiration start detection means for detecting a start time of a user's expiration period from the output of the respiratory sensor, and a target value for setting a target value for inducing the expiration period from the start time to a target time or more. The refresh guidance system according to claim 1, further comprising a setting unit, wherein the breathing information presenting unit presents a target value for an expiration period set by the target value setting unit.   The guidance control means includes a biological sensor that detects biological information of the user, an autonomic nerve activity estimation means that estimates that the parasympathetic nerve is dominant with respect to the user's autonomic function based on the output of the biosensor, 5. An operation transition unit that shifts the operation of the relaxation guiding unit to the operation of the breathing guiding unit when it is estimated by the autonomic nerve activity estimating unit that the parasympathetic nerve is dominant. The refresh guiding system according to any one of the above.   The guidance control means estimates the time when the prescribed time lapsed by the timing means from a time limit means for timing the prescribed time from the start of the operation of the relaxation guidance means as the time when the parasympathetic nerve is dominant, and the relaxation guidance means The refresh guidance system according to any one of claims 1 to 4, further comprising an operation transition unit that shifts the operation to the operation of the breathing guidance unit.   The guidance control means includes: a second biological sensor that detects biological information of the user; an activity estimation means that estimates an active state with respect to the central nerve of the user based on an output of the second biological sensor; The operation stopping means for stopping the operation of the breathing induction means at the time when the estimation means estimates that the central nervous system has changed from inactive to active is provided. The refresh induction system described.   An environment that induces the user's autonomic nervous function to a state in which the parasympathetic nerve is dominant is formed by the relaxation induction means, and it is estimated that the user's parasympathetic nerve is dominant by using the relaxation induction means. By detecting the start time of the expiration period of the user based on the output, and presenting the content indicating the target value only in the expiration period among the inspiration period and the expiration period of the user by the breathing information presentation means, A refresh induction method, wherein the expiration period of a user is guided in an extension direction.