WO2016189719A1 - 光刺激装置、光刺激方法及びプログラム - Google Patents
光刺激装置、光刺激方法及びプログラム Download PDFInfo
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- A61M21/00—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
- 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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Definitions
- the present invention relates to a light stimulation technique, and more particularly to a light stimulation technique for the head.
- Non-Patent Document 1 Japanese Patent Document 1
- This report suggests that continuous light such as sunlight during the day may be useful for immune regulation.
- birds, reptiles, and fish are said to react directly to light-sensitive cells of the pineal gland, but the human vision Such reactions other than the route are not known.
- UVB medium-wavelength
- UVA long-wavelength
- the inventors have also proposed a technique for irradiating light from the front of the frontal region in a state where both eyes are completely shielded from light to non-invasively activate the brain and the immune mechanism (patent) Reference 1 and 2).
- the irradiation tool described in Patent Document 1 includes a light source unit in contact with the forehead and a band unit for mounting (fixing) the light source unit on the user's head.
- a large number of LEDs are arranged inside the light source unit (on the frontal side of the user).
- a light shielding portion is provided at the lower edge portion and the side edge portion of the light source portion.
- JP 2001-211871 A Japanese Patent Laid-Open No. 9-84888
- Patent Document 1 irradiates uniform light on the head, and there is a problem that there is a large individual difference in the effect.
- the object of the present invention is to solve the above-described problems and provide a light stimulation technique suitable for each individual.
- a waveform generation unit that shapes a waveform in a frequency band including a partial band of a ⁇ wave and a partial band of an ⁇ wave, and the amplitude of the waveform generated in the waveform generation unit
- a pulse modulation unit that generates a pulse waveform in which the duty of the pulse waveform is adjusted, and a light irradiation unit that emits red pulse light to the head based on the output of the pulse modulation unit
- a photostimulation device is provided.
- the waveform generation unit shapes a waveform in a frequency band including a partial band of the ⁇ wave and a partial band of the ⁇ wave based on the self-electroencephalogram.
- the head for example, the prefrontal cortex (frontal association area), is centered on the frequency and amplitude of the ⁇ -wave rhythm (fluctuation) unique to each person. It is possible to enhance the amplitudes of the ⁇ wave and the ⁇ wave that are being generated, thereby noninvasively enhancing nerve impulses in the cerebral cortex and activating cellular immunity.
- red pulse light is generated with a pulse drive voltage by the pulse modulation unit, power consumption can be suppressed, and the ripple component of the output voltage can be reduced, and response performance to load fluctuation can be improved. Accordingly, damage to the head due to heat can be prevented.
- the feedback function can eliminate the need for frequency sweep processing.
- the feedback function is characterized in that the light irradiation data is updated according to the frequency band and amplitude of the self-electroencephalogram.
- the frequency band is a continuous frequency band between 7 Hz and 13 Hz.
- the amplitude of naturally occurring ⁇ and ⁇ waves is enhanced by pulse light irradiation to the head that is automatically adjusted based on the rhythm of the brain waves unique to each person.
- pulse light irradiation to the head that is automatically adjusted based on the rhythm of the brain waves unique to each person.
- the waveform generation unit has a function of suppressing the amplitude of the input self-electroencephalogram.
- It has a memory for storing the self-electroencephalogram or the shaped waveform, and performs waveform processing based on the waveform read from the memory. Since it is not necessary to always acquire an electroencephalogram, the process becomes simple.
- a center frequency adjusting unit (BPF unit) for adjusting the frequency band is provided. By narrowing down to a desired frequency band, the effect can be made more effective.
- the present invention performs A / D conversion on the self-electroencephalogram acquired by the sensor and amplifies the electroencephalogram amplifier as necessary, and a control signal for controlling the driving of the LED based on the output signal from the electroencephalogram amplifier.
- a control signal generation circuit to generate, a PWM modulation unit that PWM modulates an output from the control signal generation circuit, and a light irradiation unit that includes an LED driven based on an output signal from the PWM modulation unit This is a photostimulation device.
- the control signal generation circuit includes a first bandpass filter (BPF1) that passes a frequency band including a partial band of the ⁇ wave and a partial band of the ⁇ wave, and AGC that suppresses fluctuations in amplitude depending on an individual. It has a limiter.
- BPF1 first bandpass filter
- AGC AGC that suppresses fluctuations in amplitude depending on an individual. It has a limiter.
- the control signal generation circuit further includes a second bandpass filter (BPF2) and a feedback function that feeds back an output from the second bandpass filter (BPF2) to the AGC limiter.
- BPF2 second bandpass filter
- BPF2 second bandpass filter
- a feedback function that feeds back an output from the second bandpass filter (BPF2) to the AGC limiter.
- This invention is the instrument for photostimulation apparatuses for irradiating the test subject's head with the said red pulsed light from any one of said photostimulation apparatuses, Comprising: As for the said light irradiation part, red LED is an LED.
- the present invention is an instrument for a photostimulation device for irradiating a subject's head with the red pulse light from any one of the photostimulation devices described above, wherein in the photostimulation device, the device
- the device This is a device for a photostimulation apparatus, characterized in that a light guide for guiding a part of light inside the housing of the subject to the eyes of a subject is provided as operation monitor light.
- ⁇ Motion monitor light can be projected to the user in order to monitor the movement of light that stimulates the brain.
- An adjustment switch is provided so that the operation monitor light can be dimmed or shielded.
- an optical pulse device with an operation check window on the head that can be adjusted or shielded so that it will not be too dazzling or dark when the brightness of the external environment changes outdoors, indoors, etc.
- There is an operation confirmation display there is a window where you can check part of the internal light stimulus signal, there is an adjustment window for dimming on the light guide, and if you want to change the brightness, operate the adjustment window to change the brightness
- An operation confirmation window that can adjust
- the adjustment window may be a dye having a different transmittance or may be a shield on the light guide.
- the brightness of the confirmation lamp can be adjusted by the operation confirmation window, and the display for confirming the brightness and the operation can be performed by the detection window (hole) for detecting the internal optical state.
- a waveform generation step for shaping a waveform in a frequency band including a partial band of the ⁇ wave and a partial band of the ⁇ wave in the self-electroencephalogram, and the waveform generation step generates the waveform.
- a pulse modulation step that generates a pulse waveform in which the duty of the pulse waveform is adjusted based on the amplitude of the waveform, and light that irradiates the head with red pulse light based on the output of the pulse modulation step And an irradiating step.
- It is characterized by having a feedback processing step of reflecting the change in the self-electroencephalogram when the red pulse light is irradiated in the light irradiation step in the drive pulse voltage in the light irradiation step.
- the waveform generation step is characterized in that a waveform in a frequency band including a partial band of the ⁇ wave and a partial band of the ⁇ wave is shaped based on the self-electroencephalogram. It has a feedback processing step of reflecting the change of the self-electroencephalogram when the red pulse light is irradiated in the light irradiation step in the drive pulse voltage in the light irradiation step.
- the present invention may be a program for causing a computer to execute the light stimulation method described above, or a computer-readable recording medium for recording the program.
- a light stimulation technique suitable for an individual can be provided.
- FIG. 1B It is a figure which shows the input waveform (a) and output waveform (b) of a pulse modulation part. It is a figure which shows the example of a transition of the waveform in the feedback circuit shown to FIG. 1B. It is a flowchart figure which shows an example of the flow of a waveform process. It is a flowchart figure which shows the flow of the light irradiation process to a head. It is a figure which shows the structural example of the light irradiation apparatus by embodiment of this invention. It is a figure which shows the structural example of the photostimulation apparatus by the 6th Embodiment of this invention, The red line pulse light obtained by performing the process by each 1st-5th embodiment is a test subject's head. It is a figure which shows the other example of the instrument for irradiating to.
- the inventors have come up with the idea of non-invasively enhancing nerve impulses in the cerebral cortex, activating the living body by changing the endocrine system, and activating cellular immunity.
- the head means the head excluding the occipital region including the prefrontal cortex (frontal association area).
- FIG. 1A is a functional block diagram showing a configuration example of the photostimulation apparatus according to the first embodiment of the present invention. This function can be realized by a hardware configuration, a software configuration, or a combination thereof. The same applies hereinafter.
- FIG. 2 is a diagram for explaining a frequency band of an electroencephalogram used in the present embodiment.
- the ⁇ wave has a band of 5 to 8 Hz
- the ⁇ wave has a band of 8 to 13 Hz
- the ⁇ wave has a band of 13 to 30 Hz.
- the photostimulation apparatus is based on, for example, a subject's brain wave (electroencephalogram sensor 11, electroencephalogram amplifier 13: also referred to as self-electroencephalogram) acquired by the sensor 11.
- a subject's brain wave electronic device 11, electroencephalogram amplifier 13: also referred to as self-electroencephalogram
- the photostimulation apparatus includes a waveform generation unit 1a that generates an appropriate waveform based on the self-electroencephalogram, and a pulse modulation unit 3 that performs pulse modulation (PWM modulation) on its output.
- PWM modulation pulse modulation
- a light irradiation unit 4 such as a red light emitting diode (for example, an emission wavelength of 660 nm, LED) driven based on a pulse-modulated driving waveform.
- the light source wavelength of red light in the light irradiation unit 4 is preferably in the range of 610 to 750 nm.
- the red pulse light emitted from the light irradiation unit 4 is applied to the irradiated region 5 such as the head of the subject.
- the waveform generation unit 1a generates an appropriate waveform based on the self-electroencephalogram, but the waveform generation target is not limited to the self-electroencephalogram. For example, it is possible to use brain waves of close relatives or patients with similar illnesses.
- the waveform generation unit 1a may include, for example, an AGC unit 1a-1, which suppresses individual differences in amplitude, for example, a BPF unit 1a-2 that extracts only waveforms in a predetermined frequency band of ⁇ waves and ⁇ waves. .
- AGC unit 1a-1 which suppresses individual differences in amplitude
- BPF unit 1a-2 that extracts only waveforms in a predetermined frequency band of ⁇ waves and ⁇ waves.
- FIG. 3A is an example of an input signal (original brain wave (a)) of an electroencephalogram to the waveform generation unit 1a and an output signal (b) from the waveform generation unit 1a, where the vertical axis represents amplitude and the horizontal axis represents time (s). It is. In both cases, sampling is performed at 100 Hz.
- L1 and L2 are envelopes (envelopes) of the respective waveforms.
- FIGS. 3A and 3B basically, a waveform that absorbs (removes) a singular point of an individual, as can be seen by comparing the envelopes L1 and L2, while maintaining personal fluctuations. Perform deformation processing.
- the individual singularities are removed while taking into account the characteristics of the individual, and further, the nerve impulses of the cerebral cortex are enhanced non-invasively and the endocrine system in a state where heat generation is suppressed by pulse modulation.
- the activation of the living body and the activation of cellular immunity can be achieved by the change of.
- the LED is not limited to the red LED, and the frequency band is not limited to 7 to 13 Hz.
- the light source is not limited to those using LEDs.
- FIG. 1B is a functional block diagram illustrating a configuration example of the photostimulation apparatus according to the present embodiment, and corresponds to FIG. 1A.
- the photostimulation apparatus converts the subject's brain wave acquired by the sensor 11 and amplifies the brain wave amplifier 13 as necessary, and the output from the brain wave amplifier 13.
- a control signal generation circuit 1b for generating a control signal for controlling the driving of the LED
- a PWM modulation unit 3 for PWM-modulating an output from the control signal generation circuit 1b
- the light from the light irradiation unit 4 is irradiated as pulsed light to the irradiated region 5 of the subject, for example, the head.
- the PWM modulation unit 3 represents a waveform based on a variable pulse width and positive / negative without changing the frequency. As a result, the ripple component of the output voltage can be reduced, and the response performance with respect to load fluctuations can be improved. PFM modulation may be used instead of PWM modulation.
- the control signal generation circuit 1b includes, for example, a first bandpass filter (BPF1) 1-1, an AGC limiter 1-2, and a second bandpass filter (BPF2) 1-3.
- control signal generation circuit 1b has a feedback function that feeds back the output from the second bandpass filter (BPF2) 1-3 to the AGC limiter 1-2.
- the center frequency can be made to function as a center frequency changing unit 1-1-1 for arbitrarily changing the center frequency between 5 and 15 Hz.
- the BEF circuit 1-5 is a band elimination filter, and is a filter that removes only a certain frequency and passes the other band.
- a memory 1-7 for storing the output of the second band pass filter (BPF2) 1-3 may be provided.
- FIG. 1C is a diagram illustrating a frequency characteristic L1 of the BPF, an AGC control notch L2 of the AGC limiter 1-2, and a frequency characteristic L3 of the LPF 1-6.
- control signal generation circuit 1b can output a processed signal based on the brain wave in the frequency range indicated by the reference symbol P1 to the PWM modulation unit 3.
- FIG. 3B is a diagram illustrating an example of waveform processing by the circuit of FIG. 1B in terms of the relationship between frequency and amplitude.
- Waveform 1 is a diagram showing an example of an input waveform to the first bandpass filter (BPF1) 1-1, where the vertical axis represents amplitude and the horizontal axis represents sampling time.
- Waveform 1) is, for example, a first waveform obtained by amplifying an individual's brain wave (self brain wave).
- a waveform 2) of (b) is a diagram showing an example of an output waveform from the first bandpass filter (BPF1) 1-1.
- BPF1-1 the first bandpass filter
- (C) Waveform 3) is an output waveform of the AGC limiter 1-2 using the waveform 2) as an input, and fluctuations in amplitude depending on the individual are suppressed.
- Waveform 4) of (d) is a diagram showing an example of an output waveform of the second bandpass filter (BPF2) 1-3 using waveform 3) as an input, and BPF2 (1-3) is arbitrarily provided. A waveform shaping process is performed.
- Waveforms 3) and 4) are examples of waveforms when the feedback function described later is activated.
- FIG. 3C is an input / output waveform of the PWM circuit 3 having the waveform 4) as an input, and the scale of the horizontal axis is changed.
- the pulse waveform duty is adjusted according to the period (frequency) and amplitude of the waveform 4) of FIG. 3B (d) shown in FIG. 3C (a).
- a pulse waveform can be obtained according to the waveform 4). Heat generation can be suppressed by using this pulse waveform as the drive voltage of the LED 4.
- FIG. 3D is a diagram illustrating an example of waveform processing by the feedback circuit in FIG. 1B.
- Waveform 11 is an output waveform of the second bandpass filter (BPF2) 1-3.
- Waveform 12 is an example in which waveform 11) is set to an absolute value by absolute value circuit 1-4. This makes it easier to calculate the amplitude of the waveform.
- Waveform 13 is an example in which the amplitude of waveform 12) is suppressed by the BEF circuit 1-5 due to the characteristics of the control notch shown in FIG. 1C.
- Waveform 14 is an example of waveform 13) in which the baseline is set to amplitude 0 by LPF 1-6 and the amplitude is increased to, for example, 0.7 times.
- the amplitude depending on the individual difference is fed back to the AGC limiter circuit 1-2, and fluctuations can be suppressed while retaining the individual characteristics.
- the memory 1-7 that stores the output of the second bandpass filter (BPF2) 1-3 stores a waveform that is effective for the individual. Thereafter, the waveform from the memory is stored.
- a pulse signal may be generated by the above.
- the electroencephalogram may be stored in a memory.
- processing may be simplified by storing any output of the circuit shown in FIG. 1B as a signal to be stored in the memory.
- FIG. 4 is a flowchart showing the flow of processing when the above-described processing according to the first and second embodiments is processed by software as the third embodiment of the present invention.
- FIG. 4 first, when processing is started (Start), an electroencephalogram is acquired in step S2.
- step S3 BPF1 processing is performed, and in step S4, AGC limiter processing is performed.
- step S5 the absolute value processing in step S5
- the BEF processing in step S6 the LPF processing in step S7 are returned to step S4
- the BPF2 processing is performed in step S8, and the PWM modulation processing is performed in step S9.
- step S10 a driving pulse voltage is applied to the LED, and the process is terminated (step S11).
- FIG. 5 shows, as a fourth embodiment of the present invention, light irradiation processing on the head of a subject by an LED driven based on the LED drive pulse signal in each of the first to third embodiments. It is a flowchart figure which shows the flow.
- step S21 the light pulse irradiation process is started (Start), and in step S22, actual light irradiation is started.
- step S23 a sweep process with a frequency of about 3 minutes may be performed.
- the frequency is irradiated at intervals of about 0.1 Hz from about 13 Hz to 7 Hz (approximately 3.5 seconds).
- step S24 the head is irradiated with pulsed light.
- the irradiation time is, for example, about 12 minutes, and the data for light irradiation is updated in step S26 and the process returns to step S22 until 12 minutes have passed by the time counter or the like in step S25.
- the light irradiation data update process is a process as shown in FIG. 4, and is a feedback process in which the processing result of FIG. 4 based on the electroencephalogram changed by the light pulse irradiation is reflected in the LED drive pulse voltage.
- the irradiation time is preferably, for example, from 12 minutes (with sweep) to 15 minutes (without sweep).
- the next update data irradiates the light pulse only in the frequency region detected as the self-electroencephalogram.
- the amplitude is updated so that the amplitude is larger when the amplitude is larger and smaller when the amplitude is smaller, according to the amplitude detected as the self-electroencephalogram.
- FIG. 6 is a diagram showing a configuration example of a photostimulation apparatus according to the fifth embodiment of the present invention.
- Red pulse light obtained by performing the processing according to each of the first to fifth embodiments is used as a subject.
- It is a figure which shows an example of the instrument for irradiating to the head.
- a support plate 57 in which a large number of LEDs 4 (not shown) are arranged at the position of the emission hole 57a covers a cap-like member 51 provided on the back surface (irradiated region on the head side).
- the head is irradiated with red light.
- the irradiation part 51a of the hat-shaped member 51 is aligned with the irradiated region.
- the eye protection part 53 provided in the hat-shaped member 51 so that sliding was possible was slid to the position of eyes, and eyes are protected (FIG. 6 (a)).
- the eye protection unit 53 when the eye protection unit 53 is slid from the position of the eye, the eye protection unit 53 is configured to be positioned between the irradiation unit 51a and the irradiated region. Eyes can be protected by shielding.
- FIG. 7 is a diagram showing a configuration example of the photostimulation apparatus according to the sixth embodiment of the present invention, and the red line pulse light obtained by performing the processing according to each of the first to fifth embodiments, It is a figure which shows the other example of the instrument for irradiating to a test subject's head.
- a signal processing unit 157 in addition to the light emitting unit 155, for example, a signal processing unit 157, a power source (battery or the like) 161, and the like. Is arranged.
- the signal processing unit 157 and the power source (battery or the like) 161 may be disposed outside the housing 153.
- the window 163 for confirming a part of the internal light stimulus signal for confirming the operation of the device is provided at a visible position. And there is an adjustment window for dimming on the light guide path in the direction of the eye of the light, and when it is desired to change the brightness, the adjustment window can be operated to adjust the brightness.
- the light adjustment by the adjustment window 163 may be performed by pigments having different transmittances, or may be a shielding object on the light guide path, as long as it is a device that adjusts the brightness of the confirmation lamp using the operation confirmation window.
- this function includes, for example, an operation check window 163, and an adjustment switch function is provided so that the operation monitor light can be dimmed or blocked.
- the adjustment switch function is provided with a slit 165 and a light shielding plate 164 arranged so that the opening range of the slit 165 can be adjusted at a position where the operation check window 163 is desired. ing.
- the opening range of the slit 165 By adjusting the opening range of the slit 165 by sliding the light shielding plate 164, it is possible to adjust or block the light so that it is not too dazzling or too dark when the brightness of the external environment changes outdoors or indoors. ing.
- a detection window that detects the internal optical state, performs display for confirming brightness and operation, and easily starts and stops on the system side. Can be monitored.
- Processing and control can be realized by software processing by CPU (Central Processing Unit) or GPU (Graphics Processing Unit), ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Hardware) that can be realized by ProgrammableGardware.
- CPU Central Processing Unit
- GPU Graphics Processing Unit
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Hardware
- the use of the device of the present invention makes it possible to regenerate degenerated functions in the human brain.
- the spontaneously occurring pulse light irradiation to the head which is automatically adjusted based on the rhythm of the brain waves unique to each person, centered on the prefrontal cortex (frontal association area).
- the amplitude of the ⁇ wave and the ⁇ wave of the cerebral cortex can be increased, thereby enhancing non-invasively the nerve impulses of the cerebral cortex, relaxation due to changes in the endocrine system, and activation of cellular immunity.
- the apparatus of the present invention is a strain in vivo exceeding the rhythm (fluctuation) of physiological phenomena by stimulating with a red pulsed light in a specific wavelength region centering on the human head, particularly the prefrontal cortex (frontal association cortex). Can be improved and further prevented by tuning and amplifying the frequency and amplitude disturbance of the ⁇ wave generated from the frequency and amplitude between a specific band of the ⁇ wave and a partial band of the ⁇ wave. To do.
- This light stimulation of the head causes resuscitation of the desensitized photosensitivity function of the brain surface (mainly cerebral cortex), and stimulates excitation of nerve cells in the cerebral cortex, resulting in enhancement of nerve impulses (due to changes in the endocrine system)
- the innate immune system cellular immunity
- the immune system includes an acquired immune system and an innate immune system (cellular immunity).
- cellular immunity In the acquired immune system, when a foreign substance such as bacteria or virus enters the body, antigen-presenting cells such as dendritic cells present the antigen to the helper T cell and convey information about the foreign substance, so that the helper T cell instructs the B cell. The antibody against the antigen is made, and this antibody attacks and destroys the foreign body.
- the innate immune system cellular immunity
- NK cells NK cells
- macrophages phagocytic cells
- granulocytes neurotrophils
- the light stimulation of the head by the device of the present invention is characterized in that activation of NK cells occurs.
- the increase in the number of NK cells is related to CD57 and CD16 (CD is an abbreviation of “Cluster of Differentiation”), which are cell surface antigens of NK cells in peripheral blood, where CD57 ⁇ CD16 + and CD57 + CD16 +.
- CD57 and CD16 CD are cell surface antigens of NK cells in peripheral blood, where CD57 ⁇ CD16 + and CD57 + CD16 +.
- the amount of cells present can be confirmed by measurement by a flow cytometry method or the like.
- ⁇ waves (frequency 30 to 14 Hz) mainly become affected by tension and stress.
- the apparatus of the present invention measures the brain waves of each person and automatically uses red pulse light (using an arbitrary wavelength range of 610 to 750 nm) automatically adjusted to the frequency and amplitude of the rhythm of each person's specific ⁇ wave, For example, by irradiating mainly in the prefrontal cortex (frontal association area), a partial band of ⁇ waves to a partial band of ⁇ waves (generally 7 to 13 Hz, preferably 7 to 12 Hz, more preferably 7 to 10 Hz) ) makes it possible to increase the amplitude of the electroencephalogram.
- red pulse light irradiation in the present invention on healthy persons, cancer patients, elderly people, etc., for example, 1 to 6 times a day (in the case of 4 to 6 times a day, for example, the first and second times in the morning 15 “Period with an interval of more than one minute, and one or two sets in the afternoon are taken once or twice.”, About 15 minutes each, about 2 to 3 weeks or more
- enhancement of nerve impulses in the cerebral cortex activation of cerebral cortex function
- activation as a living body due to changes in the endocrine system for example, decreased irritation and mentality due to decreased blood norepinephrine [noradrenaline] level
- innate immune system for example, increased NK cell activity
- the light sensitivity that originally existed on the surface of the brain (developmentally called the telencephalon) is revived, so that the above-mentioned brain is degenerate in the modern human brain. It becomes possible to revive some physiological functions (for example, enhancement of nerve impulses in the cerebral cortex, activation as a living body by changes in the endocrine system, activation of cellular immunity, etc.).
- some physiological functions for example, enhancement of nerve impulses in the cerebral cortex, activation as a living body by changes in the endocrine system, activation of cellular immunity, etc.
- Each component of the present invention can be arbitrarily selected, and an invention having a selected configuration is also included in the present invention.
- the present invention can be used for an optical pulse irradiation device for the head.
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Abstract
Description
調整または遮光可能な動作確認窓を頭部に装着する光パルス装置において、目で見えるところに機器の動作確認表示があり、内部の光刺激信号の一部を確認できる窓があり、導光路上に減光するための調整窓があり、明るさを変えたい場合に調整窓を操作して明るさを調整できる動作確認窓を設ける。
まず、本発明の第1の実施の形態による光刺激装置について説明する。尚、本明細書において、頭部とは、前頭前野(前頭連合野)を含み、後頭部を除く頭部を意味する。
次に、本発明の第2の実施の形態について詳細に説明する。図1Bは、本実施の形態による光刺激装置の一構成例を示す機能ブロック図であり、図1Aに対応する図である。
例えば、第2のバンドパスフィルタ(BPF2)1-3の出力を記憶するメモリ1-7により、その個人に対して効果のある波形を記憶させておくことで、それ以降は、メモリからの波形によりパルス信号を生成するようにしても良い。あるいは、脳波をメモリに記憶させておいても良い。その他、メモリに記憶させる信号として、図1Bに示す回路のいずれかの出力を記憶するようにして、処理を簡単にしても良い。
図4は、本発明の第3の実施の形態として、第1、第2の実施の形態による上記の処理をソフトウェアによる処理とした際の、処理の流れを示すフローチャート図である。図4に示すように、まず、処理を開始すると(Start)、ステップS2において、脳波を取得する。次いで、ステップS3において、BPF1の処理を行い、ステップS4において、AGCリミッタ処理を行う。次いで、ステップS5において絶対値処理を、ステップS6においてBEF処理を、ステップS7においてLPF処理を行った結果をステップS4に戻し、次いで、ステップS8でBPF2処理を、ステップS9でPWM変調処理を行い、ステップS10でLEDに駆動パルス電圧を印加して、処理を終了する(ステップS11)。
図5は、本発明の第4の実施の形態として、上記の第1~第3までの各実施の形態におけるLED駆動パルス信号に基づいて駆動されるLEDによる被験者の頭部への光照射処理の流れを示すフローチャート図である。
図6は、本発明の第5の実施の形態による光刺激装置の構成例を示す図であり、第1~第5までの各実施の形態による処理を行って得た赤色パルス光を、被験者の頭部に照射するための器具の一例を示す図である。図6(c)に示すように、出射穴57aの位置に図示しないLED4が多数配置された支持板57が裏面(頭部側の被照射領域)に設けられた帽子状の部材51を被る。
図7は、本発明の第6の実施の形態による光刺激装置の構成例を示す図であり、第1~第5までの各実施の形態による処理を行って得た赤色線パルス光を、被験者の頭部に照射するための器具の他の例を示す図である。
Claims (20)
- θ波の一部帯域とα波の一部帯域とを含む周波数帯域の波形を整形する波形生成部と、
前記波形生成部において生成された波形の振幅に基づいてパルス波形のデューティを調整したパルス波形を生成するパルス変調部と、を有し、
前記パルス変調部の出力に基づいて、頭部への赤色パルス光の照射を行う光照射部と
を有することを特徴とする光刺激装置。 - 前記波形生成部は、自己脳波に基づいてθ波の一部帯域とα波の一部帯域とを含む周波数帯域の波形を整形することを特徴とする請求項1に記載の光刺激装置。
- 前記光照射部により赤色パルス光が照射された際の自己脳波の変化を、前記光照射部の駆動パルス電圧に反映させるフィードバック機能を有することを特徴とする請求項2に記載の光刺激装置。
- 前記フィードバック機能は、自己脳波の周波数帯域と振幅に応じて光照射用データを更新することを特徴とする請求項3に記載の光刺激装置。
- 前記周波数帯域は、
7Hzから13Hzまでの間の連続した周波数帯であることを特徴とする請求項1から4までのいずれか1項に記載の光刺激装置。 - 前記波形生成部は、入力した自己脳波の振幅の強弱を抑制する機能を有することを特徴とする請求項1から5までのいずれか1項に記載の光刺激装置。
- 自己脳波又は前記整形した波形を記憶するメモリを有し、
前記メモリから読みだした波形に基づいて波形処理を行うことを特徴とする請求項1から6までのいずれか1項に記載の光刺激装置。 - 前記周波数帯域を調整する中心周波数調整部(BPF部)を有することを特徴とする請求項1から7までのいずれか1項に記載の光刺激装置。
- センサにより取得した自己脳波をA/D変換するとともに、増幅する脳波アンプと、前記脳波アンプからの出力信号に基づいて、LEDの駆動を制御する制御信号を生成する制御信号生成回路と、前記制御信号生成回路からの出力をPWM変調するPWM変調部と、前記PWM変調部からの出力信号に基づいて駆動されるLEDを備えた光照射部と、を備えることを特徴とする光刺激装置。
- 前記制御信号生成回路は、θ波の一部帯域とα波の一部帯域とを含む周波数帯域を通過させる第1のバンドパスフィルタ(BPF1)と、個人に依存する前記自己脳波における振幅の変動を抑制するAGCリミッタを有することを特徴とする請求項9に記載の光刺激装置。
- 前記制御信号生成回路は、
さらに、第2のバンドパスフィルタ(BPF2)と、前記第2のバンドパスフィルタ(BPF2)からの出力を、前記AGCリミッタにフィードバックするフィードバック機能を有することを特徴とする請求項10に記載の光刺激装置。 - 前記フィードバック機能を構成する回路として、
入力の絶対値を出力する絶対値回路と、入力の振幅を抑制させるBEF回路(帯域除去濾波器)と、その出力のフィルタリングを行うLPF回路と、を有していることを特徴とする請求項11に記載の光刺激装置。 - 請求項1から12までのいずれか1項に記載の光刺激装置からの前記赤色パルス光を被験者の頭部に照射するための光刺激装置用の器具であって、
前記光照射部は、赤色LEDが多数配置された帽子状の部材と、
前記帽子状の部材に摺動可能に設けられた目保護板と、を有し、
光を照射する際には、前記目保護板を、眼を覆う位置にスライドさせて目を保護し、
前記目保護板を眼の方向からスライドさせることで、前記光照射部と被照射領域との間に位置するように構成されている光刺激装置用の器具。 - 請求項1から12までのいずれか1項に記載の光刺激装置からの前記赤色パルス光を被験者の頭部に照射するための光刺激装置用の器具であって、
前記光刺激装置において
装置のハウジングの内部の光の一部を動作モニタ光として被験者の目に導く導光路を設けることを特徴とする光刺激装置用の器具。 - 前記動作モニタ光を、調光または遮蔽できるように調整スイッチを設けたことを特徴とする請求項14に記載の光刺激装置用の器具。
- θ波の一部帯域とα波の一部帯域とを含む周波数帯域の波形を整形する波形生成ステップと、
前記波形生成ステップにおいて生成された波形の振幅に基づいてパルス波形のデューティを調整したパルス波形を生成するパルス変調ステップと、を有し、
前記パルス変調ステップの出力に基づいて、頭部への赤色パルス光の照射を行う光照射ステップと
を有することを特徴とする光刺激方法。 - 前記波形生成ステップは、自己脳波に基づいてθ波の一部帯域とα波の一部帯域とを含む周波数帯域の波形を整形することを特徴とする請求項16に記載の光刺激方法。
- 前記光照射ステップにより赤色パルス光が照射された際の自己脳波の変化を、前記光照射ステップにおける駆動パルス電圧に反映させるフィードバック処理ステップを有することを特徴とする請求項16に記載の光刺激方法。
- コンピュータに、請求項16から18までのいずれか1項に記載の光刺激方法を実行させるためのプログラム。
- 請求項1から19までのいずれか1項に記載の光刺激技術又はプログラムにより、脳表面で退化しつつある光感受性を蘇生させることによる生理学的及び免疫学的機能の賦活化を特徴とする、光を用いた蘇生方法又はプログラム。
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Also Published As
Publication number | Publication date |
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US10518100B2 (en) | 2019-12-31 |
EP3305365A4 (en) | 2018-09-12 |
JPWO2016189719A1 (ja) | 2017-06-08 |
US20180169430A1 (en) | 2018-06-21 |
JP6037082B1 (ja) | 2016-11-30 |
EP3305365B1 (en) | 2021-01-20 |
EP3305365A1 (en) | 2018-04-11 |
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