CN113349794A - Transcranial electrical stimulation control method and control device - Google Patents

Transcranial electrical stimulation control method and control device Download PDF

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CN113349794A
CN113349794A CN202110597811.4A CN202110597811A CN113349794A CN 113349794 A CN113349794 A CN 113349794A CN 202110597811 A CN202110597811 A CN 202110597811A CN 113349794 A CN113349794 A CN 113349794A
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sleep
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徐敏馨
陈子豪
易昊翔
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Hangzhou Enter Electronic Technology Co ltd
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Hangzhou Enter Electronic Technology Co ltd
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    • A61M21/02—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
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    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
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    • A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
    • A61M2021/0072—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus with application of electrical currents

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Abstract

The application relates to a transcranial electrical stimulation control method, a control device, a transcranial electrical stimulation device and a system, wherein the transcranial electrical stimulation control method comprises the following steps: acquiring real-time electroencephalogram signals of a user, which are acquired by an input electrode; determining the current sleep stage of the user according to the real-time electroencephalogram signals, wherein the sleep stage comprises: n1, N2, N3, N4 and REM stages; under the condition that the sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals; and under the condition that the current sleep quality of the user is determined to be poor, controlling an output electrode to output an electric stimulation signal matched with the sleep stage and the sleep cycle where the user is currently located. Through the application, the problem that the prior art can only apply fixed slow wave electrostimulation to the user and bring is solved.

Description

Transcranial electrical stimulation control method and control device
Technical Field
The application relates to the technical field of transcranial electrical stimulation, in particular to a transcranial electrical stimulation control method, a control device, a transcranial electrical stimulation device and a system.
Background
The sleep process typically consists of 4 to 5 sleep cycles, one sleep cycle consisting of five sleep stages, including the first (N1), second (N2), third (N3), fourth (N4) stages of the non-Rapid Eye Movement period and the Rapid Eye Movement period (REM). For insomnia patients, the pressure causes the body arousal system to be over-activated, and the brain of the insomnia patients is in a mixed state of sleep and arousal during sleep as a whole, and is characterized by the frequency increase of transient arousal in behavior, and high-frequency brain electrical frequency increase in brain electrical signals, which represents the slow wave activity reduction of deep sleep (namely N3 and N4 stages). The intensity of slow wave activity is a measure of sleep stress, which together with the circadian rhythm regulates sleep homeostasis. The slow wave activity intensity in different periods and different stages in the sleep process is different, for the same deep sleep stage, the lower slow wave activity intensity indicates that the sleep quality is low, the too high slow wave intensity can cause the difficulty of awakening a person in the expected time, and good sleep homeostasis is formed only when the slow wave activity intensity is kept at a proper level in different stages of the sleep period. Thus, modulating slow wave activity in sleep is key to modulating sleep homeostasis. Research shows that the application of low-frequency oscillation potential to the transcranial can strengthen slow wave activity in sleep, promote the transition from the N2 stage to the N3 stage of deep sleep in the sleep cycle of an insomnia patient, reduce the transition to arousal, thereby reducing the arousal condition of the insomnia patient in sleep and improving the sleep quality.
The existing transcranial electrical stimulation method and transcranial electrical stimulation device apply fixed slow-wave electrical stimulation to a user, and have limited effect on improving sleep quality.
Aiming at the problems caused by the fact that only fixed slow-wave electric stimulation can be applied to a user in the related art, no effective solution is provided at present.
Disclosure of Invention
The embodiment provides a transcranial electrical stimulation control method, a control device, a transcranial electrical stimulation device and a system, which are used for solving the problem caused by the fact that only fixed slow-wave electrical stimulation can be applied to a user in the related art.
In a first aspect, there is provided in this embodiment a transcranial electrical stimulation control method, comprising:
acquiring real-time electroencephalogram signals of a user, which are acquired by an input electrode;
determining the current sleep stage of the user according to the real-time electroencephalogram signals, wherein the sleep stage comprises: n1, N2, N3, N4 and REM stages;
under the condition that the sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals;
and under the condition that the current sleep quality of the user is determined to be poor, controlling an output electrode to output an electric stimulation signal matched with the sleep stage and the sleep cycle where the user is currently located.
In some embodiments, the determining the sleep stage of the user according to the real-time brain electrical signal includes:
extracting a first characteristic value in the real-time electroencephalogram signal;
and inputting the first characteristic value into a preset machine learning model to obtain the sleep stage of the user.
In some embodiments, the determining whether the current sleep quality of the user is good according to the real-time electroencephalogram signal includes:
extracting a second characteristic value in the electroencephalogram signal;
and inputting the second characteristic value into a preset machine learning model to obtain a current sleep quality judgment result of the user.
In some of these embodiments, the initial value of the sleep cycle is 1, and when it is determined that the sleep stage in which the user is currently located is the REM stage, the value of the sleep cycle is updated to be the current value plus 1.
In some of these embodiments, the electrical stimulation signal has a frequency in the range of 0.5 to 1 hertz.
In a second aspect, in the present embodiment, a transcranial electrical stimulation control device is provided, which is characterized by comprising a signal acquisition module, a signal analysis module and a signal output module;
the signal acquisition module is used for acquiring real-time electroencephalogram signals of the user, which are acquired by the input electrode;
the signal analysis module is used for determining the current sleep stage of the user according to the real-time electroencephalogram signal, and the sleep stage comprises: n1, N2, N3, N4 and REM stages; under the condition that the sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals;
the signal output module is used for controlling an output electrode to output an electrical stimulation signal matched with the sleep stage and the sleep cycle where the user is currently located under the condition that the current sleep quality of the user is determined to be poor.
In a third aspect, the embodiment provides a transcranial electrical stimulation device, which comprises a cap body, and is characterized in that an input electrode, an output electrode and a control module are arranged in the cap body;
the input electrode is used for collecting real-time electroencephalogram signals of a user, and the output electrode is used for outputting electrical stimulation signals to the user;
the control module is used for realizing the transcranial electrical stimulation control method.
In some of these embodiments, the helmet body comprises a helmet sleeve positioned at the outermost layer, a latex layer positioned at the middle layer and a memory latex layer positioned at the innermost layer;
the input electrode and the output electrode are installed in the memory emulsion layer.
In some of these embodiments, the cap includes a neck pillow.
In a fourth aspect, in the present embodiment, there is provided a transcranial electrical stimulation system, which is characterized in that the transcranial electrical stimulation system comprises a display terminal and the transcranial electrical stimulation device according to any one of the above items;
the display terminal is used for receiving data sent by the transcranial electric stimulation device, and the data comprises sleep quality condition data in the sleep process of a user and electric stimulation condition data received by the user.
Compared with the prior art, the transcranial electrical stimulation control method, the control device, the transcranial electrical stimulation device and the system are provided, wherein the transcranial electrical stimulation control method judges the current sleep stage and the current sleep quality of the user according to the acquired electroencephalogram signals by acquiring real-time electroencephalogram signals of the user, judges the current sleep stage and the current sleep quality of the user according to the acquired electroencephalogram signals, controls the output electrode to output electrical stimulation signals matched with the current sleep stage and the current sleep cycle of the user under the condition that the current sleep quality of the user is determined to be poor, and solves the problem caused by the fact that fixed slow-wave electrical stimulation can only be applied to the user in the prior art.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a transcranial electrical stimulation control method for improving sleep quality provided by an embodiment of the application;
FIG. 2 is a waveform diagram of an electrical stimulation signal employed by a transcranial electrical stimulation control method for providing improved sleep quality according to one embodiment of the present application;
FIG. 3 is a flow chart of a transcranial electrical stimulation control method for improving sleep quality provided by the preferred embodiment of the present application;
FIG. 4 is a block diagram of a transcranial electrical stimulation control device provided by an embodiment of the present application;
FIG. 5A is an internal block diagram of a cap of a transcranial electrical stimulation apparatus according to one embodiment of the present application;
FIG. 5B is a diagram of the internal state of a cap of a transcranial electrical stimulation device provided by one of the embodiments of the present application when worn by a user;
fig. 6 is a schematic view of a transcranial electrical stimulation device provided in another preferred embodiment of the present application.
Detailed Description
For a clearer understanding of the objects, aspects and advantages of the present application, reference is made to the following description and accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the same general meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of this application do not denote a limitation of quantity, either in the singular or the plural. The terms "comprises," "comprising," "has," "having," and any variations thereof, as referred to in this application, are intended to cover non-exclusive inclusions; for example, a process, method, and system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or modules, but may include other steps or modules (elements) not listed or inherent to such process, method, article, or apparatus. Reference throughout this application to "connected," "coupled," and the like is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference to "a plurality" in this application means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. In general, the character "/" indicates a relationship in which the objects associated before and after are an "or". The terms "first," "second," "third," and the like in this application are used for distinguishing between similar items and not necessarily for describing a particular sequential or chronological order.
The method embodiment provided in the embodiment can be executed in a transcranial electrical stimulation device, such as a head-mounted transcranial electrical stimulator, and realizes the output control of electrical stimulation signals. The method embodiments provided in this embodiment may be performed in a processor in a transcranial electrical stimulation device, which may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA.
In the present embodiment, a transcranial electrical stimulation control method for improving sleep quality is provided, and fig. 1 is a flowchart of the transcranial electrical stimulation control method of the present embodiment, as shown in fig. 1, where the flowchart includes the following steps:
and S101, acquiring real-time electroencephalogram signals of the user, which are acquired by the input electrode.
Specifically, the obtaining of the real-time electroencephalogram signals of the user acquired by the input electrode in the above steps can be realized by the following method: presetting triggering time; the method comprises the steps that along with the fact that a transcranial electrical stimulation device starts to work, an input electrode collects electroencephalograms of a user in real time, when the collection time reaches the set triggering moment, a time window signal with a specific length is intercepted, the electroencephalograms in the time window are amplified and filtered, high-precision real-time electroencephalograms are obtained, and further accurate data basis is provided for the follow-up detection of the current sleep stage and the sleep quality of the user.
Step S102, determining the current sleep stage of the user according to the real-time electroencephalogram signals, wherein the sleep stage comprises: n1, N2, N3, N4 and REM stages.
Because the electroencephalograms of different sleep stages are different, the sleep stage of the user can be judged according to the real-time electroencephalograms of the user.
Wherein, the judgment of the sleep stage can adopt a machine learning method: first characteristic values (such as alpha wave intensity, K-complex wave intensity, spindle wave intensity and delta wave intensity) related to the sleep stage in the real-time electroencephalogram signals are extracted, and then the first characteristic values are input into a preset machine learning model for judging the sleep stage to judge. In particular, the machine learning model may be a classification model, such as a decision tree, a support vector machine, a neural network, or the like. Each class of the classification model corresponds to one sleep stage, the classification model calculates the probability of each class according to the input characteristic value, and the sleep stage corresponding to the class with the highest probability is determined as the current sleep stage of the user.
And S103, under the condition that the current sleep stage of the user is determined to be N2 stage, N3 stage or N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time electroencephalogram signals.
The sleep quality of the user needs to be judged according to the current sleep stage and sleep cycle of the user, and the judging method can also adopt a machine learning method. Specifically, a second characteristic value (for example, slow oscillatory wave intensity) related to the sleep depth in the real-time electroencephalogram signal is extracted, the second characteristic value is input into a preset machine learning model for judging the sleep quality, and whether the current sleep quality of the user reaches the standard in the sleep stage is judged.
It should be noted that, the method for determining the current sleep stage and sleep quality of the user may also adopt an empirical model with a manually set threshold value, in addition to the above machine learning method. For example, for the judgment of the sleep stage, the electroencephalogram signal of the user and the signal of the characteristic waveform of each sleep stage with different phases can be directly compared, the correlation coefficient between the electroencephalogram signal of the user and the characteristic waveform of different sleep stages is obtained through CCA analysis, and the sleep stage with the maximum correlation coefficient is determined as the current sleep stage of the user. For the judgment of the sleep quality, a second characteristic value related to the sleep depth extracted from the electroencephalogram signal of the user can be directly compared with a second characteristic value threshold value of good sleep in the current sleep stage and sleep cycle of the user, and if the second characteristic value threshold value exceeds the threshold value, the current sleep quality of the user is determined to be good.
And step S104, controlling the output electrode to output an electric stimulation signal matched with the current sleep stage and sleep cycle of the user under the condition that the current sleep quality of the user is determined to be poor.
And if the current sleep quality of the user does not reach the standard, controlling the input electrode to stop collecting the real-time electroencephalogram signals of the user, and controlling the output electrode to output an electrical stimulation signal matched with the current sleep stage and sleep cycle of the user. It should be noted that, if the current sleep stage of the user is the N1 stage or the REM stage, the user is not in the slow wave sleep stage, so that no electrical stimulation is applied to the user, and the electrical brain signals of the user are collected again. The electrical stimulation signal may be a low frequency direct current oscillating wave, for example, the frequency may range from 0.5 to 1 hz, the current may range from 0.5 to 2 ma, and the electrical stimulation duration may be 5 minutes.
Preferably, since the slow wave frequency and the slow wave intensity are different in different slow wave sleep stages, and the slow wave intensity naturally decreases as the sleep duration increases, the frequency and the current magnitude of the electrical stimulation signal are matched with the period of natural sleep, that is, the frequency and the current magnitude of the electrical stimulation signal are determined by the sleep stages and the sleep period, wherein the frequency of the electrical stimulation signal maximally matches the frequency of the current sleep characteristic waveform, and the current magnitude decreases as the sleep period increases within the above range.
In the case that the current sleep quality of the user is determined to be poor, the current sleep quality of the user needs to be adjusted by outputting an electrical stimulation signal through the output electrode. The traditional transcranial electrical stimulation device can only apply fixed slow-wave electrical stimulation to a user, is not adjusted according to a specific sleep stage, and has a limited effect of improving the sleep quality. The transcranial electrical stimulation control method provided by the embodiment of the application can output the electrical stimulation signals matched with the current sleep stage and sleep cycle of the user.
Through the steps, the real-time electroencephalogram signals of the user are obtained, the current sleep stage and sleep quality of the user are judged according to the obtained electroencephalogram signals, and the matched electrical stimulation signals are output according to the current sleep stage and sleep quality of the user, so that the problem caused by the fact that fixed slow-wave electrical stimulation can only be applied to the user in the related technology is solved, and the formation of good sleep steady state can be promoted.
In one embodiment, the transcranial electrical stimulation control method for improving sleep quality is provided, and the method judges the sleep cycle of a user by the following steps:
setting the initial value of the sleep cycle to be 1, representing the first sleep cycle, and updating the value of the sleep cycle to be the current value plus 1 each time when the current sleep stage of the user is determined to be the REM stage. For example, when it is determined that the current sleep stage of the user is the REM stage for the first time, the sleep cycle at this time becomes 2, which represents that the first sleep cycle is ended, and the next sleep cycle is the second sleep cycle.
In one embodiment, a transcranial electrical stimulation control method for improving sleep quality is provided, and the method outputs a trapezoidal wave electrical stimulation signal of 0.75 Hz, as shown in figure 2. Alternatively, the electrical stimulation signal may also employ square waves and triangular waves.
The present embodiment is described and illustrated below by means of preferred embodiments.
Fig. 3 is a flowchart of a transcranial electrical stimulation control method for improving sleep quality according to the preferred embodiment, and as shown in fig. 3, the transcranial electrical stimulation control method includes the following steps:
in step S300, a sleep period T is initialized to 1.
Step S301, acquiring real-time electroencephalogram signals of the user, which are acquired by the input electrode.
Step S302, determining whether the acquisition time reaches the trigger time, if yes, executing step S303, and if no, returning to step S301.
Step S303: and intercepting a time window with a preset length.
And step S304, amplifying the intercepted signal.
In step S305, the amplified signal is filtered.
Step S306, extracting a first characteristic value related to the sleep stage and a second characteristic value related to the sleep depth.
Step S307, inputting the first feature value into a preset sleep stage classification model, and obtaining a probability Pi, i ═ 1,2,3,4,5 of each classification, where 1 corresponds to N1 stage, 2 corresponds to N2 stage, 3 corresponds to N3 stage, 4 corresponds to N4 stage, and 5 corresponds to REM stage.
In step S308, it is determined whether the maximum value is P1. If yes, the process returns to step S301, and if no, step S309 is executed. The maximum is the maximum of P1, P2, P3, P4, and P5.
Step S309: and judging whether the maximum value is P2, P3 or P4. If none of P2, P3, or P4 is the maximum value, go to step S310: let the sleep period T be T +1, and return to step S301. It should be noted that, at this time, if none of P2, P3, or P4 is the maximum value, the maximum value is P5, that is, the current user is in the REM stage. If the maximum value is P2, P3, or P4, step S311 is executed.
Step S311, determining whether the current sleep quality of the user meets the standard. If yes, the process returns to step S301, and if no, step S312 is executed.
Step S312: and controlling the input electrode to stop collecting, and controlling the output electrode to output an electrical stimulation signal matched with the current sleep stage and sleep cycle of the user. And then returns to step S301.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here. For example, step S308 and step S309 may be interchanged.
Through the steps, the real-time electroencephalogram signals of the user are obtained, the current sleep stage and sleep quality of the user are judged according to the obtained electroencephalogram signals, and the matched electrical stimulation signals are output according to the current sleep stage and sleep quality of the user, so that the problem caused by the fact that fixed slow-wave electrical stimulation can only be applied to the user in the related technology is solved, the effect of improving the sleep quality is improved, and the formation of good sleep steady state can be promoted.
In this embodiment, a transcranial electrical stimulation control device for improving sleep quality is also provided, and the device is used to implement the above embodiments and preferred embodiments, which have already been described and are not described again. The terms "module," "unit," "subunit," and the like as used below may implement a combination of software and/or hardware for a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of the structure of the transcranial electrical stimulation control device of the present embodiment, and as shown in fig. 4, the device includes: a signal acquisition module 10, a signal analysis module 20 and a signal output module 30.
The signal acquiring module 10 is configured to acquire a real-time electroencephalogram signal of a user acquired by the input electrode. The signal analysis module 20 is configured to determine a sleep stage in which the user is currently located according to the real-time electroencephalogram signal, where the sleep stage includes: n1, N2, N3, N4 and REM stages; and under the condition that the current sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals. The signal output module 30 is configured to control the output electrode to output an electrical stimulation signal matched with the current sleep stage and sleep cycle of the user when it is determined that the current sleep quality of the user is not good.
The transcranial electrical stimulation control device provided by the embodiment can be used for solving the problem caused by the fact that only fixed slow-wave electrical stimulation can be applied to a user in the related technology, improving the effect of improving the sleep quality and promoting the formation of a good sleep steady state by acquiring the real-time electroencephalogram of the user, judging the current sleep stage and the sleep quality of the user according to the acquired electroencephalogram, and outputting the matched electrical stimulation signal according to the current sleep stage and the sleep quality of the user.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
The embodiment also provides a transcranial electrical stimulation device for improving sleep quality, which comprises a cap body, wherein an input electrode, an output electrode and a control module are arranged in the cap body, the input electrode is used for collecting real-time electroencephalogram signals of a user, the output electrode is used for outputting electrical stimulation signals to the user, and the control module is used for realizing any one of the method embodiments.
In one embodiment, the transcranial electrical stimulation device for improving sleep quality is provided, and on the basis of the embodiment, the helmet body comprises a helmet sleeve positioned on the outermost layer, a latex layer positioned on the middle layer and a memory latex layer positioned on the innermost layer, wherein the input electrode and the output electrode are installed in the memory latex layer.
Fig. 5A is a structural diagram of the interior of the cap of the transcranial electrical stimulation device provided in this embodiment, and as shown in fig. 5A, a brain potential point embedded with a pore canal for installing an electrode is disposed in the memory latex layer 510. When a user wears the device, the memory latex layer 510 forms slow-rebound deformation according to the shape of the head and neck, the relevant electrodes are accurately fixed at corresponding scalp sites while wrapping the head, the electrodes are subjected to outward extrusion force from the head to cause the latex layer 520 connected with the pore channels in which the electrodes are embedded to elastically deform, and the deformation of the latex layer 520 enables the electrodes to shrink a certain distance into the pore channels (as shown in fig. 5B). Thus, the deformation of memory latex layer 510 and latex layer 520, respectively, caused by the user wearing the electrode-mounted device, maintains good contact between the electrodes and the scalp without exerting additional pressure on the corresponding collection/stimulation sites.
The duct includes an electrode mounting base 531, an electrode mounting spiral 532, and an electrode mounting duct 533.
The transcranial electrical stimulation device provided by the embodiment adopts the design of the electrode cap with the thickness, so that the protruding degree of the electrode is reduced, the memory latex provides sufficient support for the head, the pressure of the electrode on the head in the sleeping process is dispersed, and the use comfort is improved. In addition, as the control module realizes any one of the method embodiments, the transcranial electrical stimulation device can judge the current sleep cycle and sleep stage of the user according to the electroencephalogram signals fed back in real time, and give the optimal transcranial electrical stimulation to the user in real time, so that the problem caused by the fact that only fixed slow-wave electrical stimulation can be applied to the user in the related art is solved, the effect of improving sleep quality is improved, and the user can be promoted to form good sleep steady state.
In a preferred embodiment, a transcranial electrical stimulation device for improving sleep quality is provided, fig. 6 is a schematic shape diagram of the transcranial electrical stimulation device provided by the preferred embodiment, and as shown in fig. 6, the transcranial electrical stimulation device comprises a cap body, the cap body comprises a head part 610 and a neck pillow 620, and the cap body further comprises a buckle 630 for fixing the cap body. The cap body is filled with latex and memory latex, wherein the memory latex layer is positioned at the innermost layer, the latex layer is positioned at the middle layer, and the outermost layer is a detachable and washable cotton cloth sleeve. The input electrode and the output electrode are arranged in the memory emulsion layer and are detachable electrodes. The top of the cap body is provided with a liner, a chip is arranged in the liner, and the chip is used for realizing any one of the method embodiments. The inner container is also provided with a charging potential, and the top of the cap body is provided with a zipper which can be unzipped for charging.
Because the transcranial electrical stimulation device comprises the neck pillow, the electrode cap is attached to the curve of the head and the neck, and the pillow-type electrode cap wrapping the head fixes the acquisition and stimulation sites corresponding to each electrode in a comfortable way, the electrode displacement can not be caused along with the change of the sleeping posture of a user in the sleeping process, the problem that the traditional electroencephalogram device has too many exposed wires is solved, and the stability of the function of the equipment is not influenced by the activity of the limbs of the user in the sleeping process.
In this embodiment, a transcranial electrical stimulation system for improving sleep quality is further provided, and the transcranial electrical stimulation system comprises a display terminal and a transcranial electrical stimulation device, wherein the transcranial electrical stimulation device is provided by any one of the device embodiments.
The display terminal is used for receiving data sent by the transcranial electric stimulation device, and the data comprises sleep quality condition data of a user in the sleep process and electric stimulation condition data received by the user. The display terminal enables the user to know the sleep quality condition and the received electric stimulation condition of the user in the sleep process.
The display terminal may include one or more processors and a memory for storing data, wherein the processors may include, but are not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA. The terminal may further include a transmission device for a communication function and an input-output device. In particular, the display terminal may be a PC or a tablet.
The display terminal and the transcranial electrical stimulation device can transmit data through wifi and Bluetooth.
According to the transcranial electrical stimulation system provided by the embodiment, the transcranial electrical stimulation device adopts the design of the electrode cap with the thickness, so that the protruding degree of the electrode is reduced, the memory latex provides sufficient support for the head, the pressure of the electrode on the head in the sleeping process is dispersed, and the use comfort is improved. In addition, as the control module realizes any one of the method embodiments, the transcranial electrical stimulation device can judge the current sleep cycle and sleep stage of the user according to the electroencephalogram signals fed back in real time, and give the optimal transcranial electrical stimulation to the user in real time, so that the problem caused by the fact that only fixed slow-wave electrical stimulation can be applied to the user in the related art is solved, the effect of improving sleep quality is improved, and the user can be promoted to form good sleep steady state. And the sleep quality condition and the received electric stimulation condition of the user in the sleep process are provided for the user through the display terminal, so that the user can further know the sleep condition of the user.
It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to be limiting. All other embodiments, which can be derived by a person skilled in the art from the examples provided herein without any inventive step, shall fall within the scope of protection of the present application.
It is obvious that the drawings are only examples or embodiments of the present application, and it is obvious to those skilled in the art that the present application can be applied to other similar cases according to the drawings without creative efforts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
The term "embodiment" is used herein to mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly or implicitly understood by one of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the patent protection. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A transcranial electrical stimulation control method, comprising:
acquiring real-time electroencephalogram signals of a user, which are acquired by an input electrode;
determining the current sleep stage of the user according to the real-time electroencephalogram signals, wherein the sleep stage comprises: n1, N2, N3, N4 and REM stages;
under the condition that the sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals;
and under the condition that the current sleep quality of the user is determined to be poor, controlling an output electrode to output an electric stimulation signal matched with the sleep stage and the sleep cycle where the user is currently located.
2. The transcranial electrical stimulation control method according to claim 1, wherein the determining of the sleep stage of the user according to the real-time brain electrical signals comprises:
extracting a first characteristic value in the real-time electroencephalogram signal;
and inputting the first characteristic value into a preset machine learning model to obtain the sleep stage of the user.
3. The transcranial electrical stimulation control method according to claim 1, wherein the judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals comprises:
extracting a second characteristic value in the electroencephalogram signal;
and inputting the second characteristic value into a preset machine learning model to obtain a current sleep quality judgment result of the user.
4. The transcranial electrical stimulation control method according to claim 1, wherein the initial value of the sleep cycle is 1, and when it is determined that the sleep stage in which the user is currently located is a REM stage, the value of the sleep cycle is updated to be the current value plus 1.
5. The transcranial electrical stimulation control method according to any one of claims 1 to 4, wherein the electrical stimulation signal is in a frequency range of 0.5 to 1 hertz.
6. A transcranial electrical stimulation control device is characterized by comprising a signal acquisition module, a signal analysis module and a signal output module;
the signal acquisition module is used for acquiring real-time electroencephalogram signals of the user, which are acquired by the input electrode;
the signal analysis module is used for determining the current sleep stage of the user according to the real-time electroencephalogram signal, and the sleep stage comprises: n1, N2, N3, N4 and REM stages; under the condition that the sleep stage of the user is determined to be the N2 stage, the N3 stage or the N4 stage, judging whether the current sleep quality of the user is good or not according to the real-time brain electrical signals;
the signal output module is used for controlling an output electrode to output an electrical stimulation signal matched with the sleep stage and the sleep cycle where the user is currently located under the condition that the current sleep quality of the user is determined to be poor.
7. A transcranial electrical stimulation device comprises a cap body, and is characterized in that an input electrode, an output electrode and a control module are arranged in the cap body;
the input electrode is used for collecting real-time electroencephalogram signals of a user, and the output electrode is used for outputting electrical stimulation signals to the user;
the control module is used for realizing the transcranial electrical stimulation control method of any one of claims 1 to 5.
8. The transcranial electrical stimulation device according to claim 7, wherein the helmet body comprises a helmet sleeve located on the outermost layer, a latex layer located on the middle layer, and a memory latex layer located on the innermost layer;
the input electrode and the output electrode are installed in the memory emulsion layer.
9. The transcranial electrical stimulation device according to claim 8, wherein the cap includes a neck pillow.
10. A transcranial electrical stimulation system, characterized in that the transcranial electrical stimulation system comprises a display terminal and a transcranial electrical stimulation device according to any one of claims 7 to 9;
the display terminal is used for receiving data sent by the transcranial electric stimulation device, and the data comprises sleep quality condition data in the sleep process of a user and electric stimulation condition data received by the user.
CN202110597811.4A 2021-05-31 2021-05-31 Transcranial electrical stimulation control method and control device Pending CN113349794A (en)

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