JPH0951952A - Brain wave induction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily induce brain waves or the same frequency in a short time by connecting a plane wave speaker to the output side of an oscillator generating a sinusoidal wave as a component of brain wave signals. SOLUTION: A plane wave speaker 2 is provided in living space such as a house and a hotel having relatively high airtightness. Also, the sinusoidal wave generation circuit 3 of an oscillator 1 is made to select and generate one of sinusoidal waves as a brain wave signal component, such as an alpha wave, a theta wave and a delta wave. Then, the sinusoidal wave is amplified with an OP amplifier 5, and inputted to the plane wave speaker 2, thereby driving the diaphragms of the plane wave speaker 2 in parallel and outputting plane sound waves of the same frequency. The plane sound waves are free from irregular reflection, and accurately transmitted to a listener's tympanic membrane. Thus, the tympanic membrane are caused to accurately perform a deformation movement. Then, the deformation movement causes the interlocked motion of the malleus, the incus and the stapes, and then stimulates the cerebrum through a cochlea via the cochlea nerve, thereby inducing the brain waves of the same frequency as the sinusoidal waves generated from the oscillator 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electroencephalogram guide device for directly inducing an electroencephalogram such as an alpha wave.

[0002]

2. Description of the Related Art The relationship between EEG and mental activity has become clear,
It is known that it acts on the mind and body in response to changes in brain wave signals. That is, a delta wave with a frequency of 0.4 to 4 hertz is in a deep sleep state, a theta wave of 4 to 8 hertz is in a shallow sleep state, an alpha wave of 8 to 14 hertz is in a relaxed state, and a beta wave of 14 to 28 hertz is a beta wave. The waves are tense, 28
Gamma waves above Hertz become excited.

For example, by putting the brain wave into the alpha wave state, the memory here enters the subconscious, and what is learned in this state is reproduced by the alpha wave.
Ability improvement, vitality, concentration, memory, judgment, creativity,
Eye power, persuasive power, expressive power, thinking power, action power, etc. are strengthened.

Therefore, various proposals have heretofore been made so that the brain wave becomes an alpha wave, or the brain wave is guided to a theta wave or a delta wave. There are auditory, visual, tactile, olfactory, and taste senses that induce brain waves. As a device for inducing an electroencephalogram, for example, a device utilizing hearing,
There is an oscillator for generating two low frequency electric signals having a frequency difference of 16 Hz to 16 Hz and a sound generating means for exchanging the audible low frequency electric signals for an audible sound including a beat sound having the frequency difference ( Japanese Patent Fair 2-22674
issue).

[0005]

According to the electroencephalogram guiding device including the above-mentioned sound generating means, two low-frequency electric signals having a frequency difference of about 4 to 16 hertz are included in the beat sound having the frequency difference. Since it is intended to indirectly induce an electroencephalogram of about 4 to 16 hertz by exchanging it with an audible sound, it takes a long time to induce the electroencephalogram, and with this device, when using it, Since a sound is always heard, it may be difficult to perform intellectual work such as studying while using this device.

In view of the above points, the present invention intends to facilitate the induction of an electroencephalogram and shorten the induction time by directly inducing an electroencephalogram with a sine wave which is an electroencephalogram signal. The present invention provides an electroencephalogram guiding apparatus for facilitating intelligent work and the like at the same time by guiding the mouse, and enabling listening to sounds such as music.

[0007]

In order to achieve the above object, the present invention connects a plane wave speaker to the output side of an oscillator that generates a sine wave which is a component of an electroencephalogram signal.

With this configuration, the sine wave generated from the oscillator is excited and expanded by the plane wave speaker and is output as a plane sound wave of the same frequency. This plane sound wave has no diffuse reflection, and one frequency is accurately transmitted to the eardrum of the listener as one push and pull, so that the plane sound wave causes the eardrum to deform and move accurately. This deforming motion of the eardrum links the malleus, incus, and stapes to stimulate the cerebrum from the cochlea via the cochlear nerve, which induces an electroencephalogram with the same frequency as the sine wave generated by the oscillator.

Further, according to the present invention, the plane wave speaker is built in a headphone.

By mounting the headphone incorporating the plane wave speaker on the ear, the ear is closed by the headphone, and the inside of the external auditory meatus is almost sealed. When a plane sound wave is output from the plane wave speaker in this state, the air in the ear canal receives parallel positive pressure and negative pressure due to the sound pressure generated by pushing and pulling one frequency once, and the positive pressure and the negative pressure of this air are applied. Since the pressure deforms the eardrum, the deformation motion of the eardrum by the plane sound waves is performed more accurately and reliably. This tympanic membrane deforming motion links the malleus, incus, and stapes, and stimulates the cerebrum from the cochlea via the cochlear nerve, which leads to more efficient induction of the sine wave generated by the oscillator. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings. 1 and 2 show an example of an embodiment of the invention described in claim 1, FIG. 1 is a block diagram, and FIG. 2 is a schematic sectional view showing an example of a plane wave speaker. In FIG. 1, 1 is a CR oscillator that generates a sine wave that is a component of an electroencephalogram signal, and 2 is a plane wave speaker connected to the output side of the CR oscillator 1.

The CR oscillator 1 is composed of a sine wave generating circuit 3, a frequency adjuster 4, an OP amplifier 5, and a timer 6. In this example, the sine wave generation circuit 3 is configured to arbitrarily select and generate a sine wave that is a component of an electroencephalogram signal having a frequency called an alpha wave, a theta wave, or a delta wave. The present invention is not limited to this, and may be one that is designed to generate only a sine wave having a specific brain wave frequency, for example, an alpha wave frequency.

Further, among the electroencephalogram signals, the electroencephalogram signal called alpha wave appears with a fluctuation rhythm. Therefore, in this example, the electroencephalogram frequency of the alpha wave is detected, analyzed and stored in a memory. By incorporating this memory into the sine wave generating circuit 3, a sine wave having an alpha wave frequency with a fluctuation rhythm similar to the brain wave signal is generated.

The plane wave speaker 2 connected to the output side of the CR oscillator 1 having the above-described structure is based on the principle of generating a plane sound wave by driving a flat diaphragm in the same phase by the input of an audio signal. Loudspeakers, such a principle being known, for example as known from the acoustic device disclosed in Japanese Patent Publication No. 58-237.
Speakers based on this principle have been put to practical use.

The plane wave speaker 2 shown in FIG. 2 is constructed as follows. Reference numeral 8 is a case, and 9 is a diaphragm made of a hard and lightweight material.
0 is attached, and the case 8 is inserted through the edge 11.
Supported by. The vibrating plate 9 is driven in parallel by a magnetic circuit formed by a magnet 12. A ventilation hole 16 is formed on the back surface of the case 8.

Reference numeral 19 denotes an external sound source device such as a CD player or a tape player, which is connected to the oscillator 1 from the external terminal 20 and can be superimposed on the audio signal generated from the sine wave generating circuit 3.

Next, the operation of the above embodiment will be described. The plane wave speaker 2 is installed in a relatively airtight living space such as a house, an apartment, a hotel, or an office.

The sine wave generating circuit 3 of the oscillator 1 selects and generates one of the sine waves which are components of the electroencephalogram signal having a frequency called alpha wave, theta wave, delta wave and the like. This sine wave is amplified by the OP amplifier 5 and becomes an audio signal, which is input to the plane wave speaker 2. The audio signal input to the plane wave speaker 2 is excited and expanded, drives the flat diaphragm 9 in parallel, and is output as a plane sound wave of the same frequency. This plane sound wave has no diffuse reflection,
Since one frequency is accurately transmitted to the eardrum of the listener as one push and pull, the plane sound wave causes the eardrum to deform and move accurately. This deforming motion of the eardrum links the malleus, incus, and stapes to stimulate the cerebrum from the cochlea via the cochlear nerve, thereby inducing an electroencephalogram having the same frequency as the sine wave generated from the oscillator 1.

At this time, the cerebrum is directly stimulated by a sound wave having the same frequency as the frequency of brain waves such as alpha waves, theta waves, and gamma waves, so that the brain waves having the same frequency can be easily guided in a short time.

According to experiments, when a sine wave of 8 to 14 Hertz was oscillated from the oscillator 1, as a large number of cases, the overflow of alpha brain waves was detected within about 5 minutes. As a comparative example,
Indirect induction by audible sound, the filling of alpha brain waves 10
It took between 20 and 20 minutes.

As described above, the plane wave speaker 2 outputs plane sound waves having the same frequencies as the frequencies of alpha waves, theta waves, delta waves, etc. However, since these frequencies are low frequencies, the sound waves are Inaudible sound or near inaudible sound. Therefore, there is little feeling that the device is being used, and for example, when the device is used to induce an electroencephalogram of alpha waves, it is possible to easily perform intellectual work such as studying while using this device. Moreover, since the intellectual work is performed in the state where the alpha-wave brain waves are always guided, the work efficiency is remarkably improved.

FIGS. 3 and 4 show an example of the embodiment of the invention described in claim 2. In this example, the plane wave speaker 2 of the invention described in claim 1 is built in the headphones 7. It is a thing. FIG. 3 is a block diagram, and FIG. 4 is a cross-sectional view showing an example of headphones 7 having the plane wave speaker 2 incorporated therein.

The headphones 7 shown in FIG. 4 are constructed as follows. Reference numeral 8 is a case, and 9 is a flat diaphragm made of a hard and lightweight material. A voice coil 10 capable of a particularly long stroke is attached to the diaphragm 9, and is supported by the case 8 through an edge 11. Has been done. The vibrating plate 9 is driven in parallel by a magnetic circuit formed by a magnet 12. 13 is a yoke, 14 is a pole, 15 is a net, 17 is a cord, 18
Is an ear pad.

Next, the operation of the above embodiment will be described. Headphones 7 are attached to both ears, and on the other hand, the sine wave generation circuit 3 of the oscillator 1 selects one of sine waves which is a component of an electroencephalogram signal having a frequency called alpha wave, theta wave, delta wave, or the like. Then, the sine wave becomes an audio signal and is input to the plane wave speaker 2 of the headphone 2. The audio signal input to the plane wave speaker 2 is excited and expanded, and the flat diaphragm 9 is driven in parallel to be a plane sound wave of the same frequency, which is output to the ear canal.

At this time, the ear is closed by the headphones 7, and the inside of the external auditory meatus is almost sealed. In this state, the plane sound waves are output into the ear canal, so that the sound pressure generated by pushing and pulling one frequency causes the air in the ear canal to receive positive and negative pressures in parallel, and the positive pressure and the negative pressure of the air. Since the pressure deforms the eardrum, the deformation motion of the eardrum by the plane sound waves is performed more accurately and reliably. This deforming motion of the eardrum links the malleus, incus, and stapes to stimulate the cerebrum via the cochlear nerve from the cochlea, whereby the electroencephalogram of the same frequency as the sine wave oscillated from the oscillator 1 is more efficient. Be induced.

In each of the embodiments of the invention described in claim 1 and the embodiment described in claim 2, the external sound source device 19 such as a CD player or a tape player has an external terminal 2
Since it is connected to the oscillator 1 from 0 and can be superimposed on the audio signal generated from the sine wave generating circuit 3, it is directly induced from the external sound source device 19 by the audio signal generated from the sine wave generating circuit 3, for example. By generating and superimposing music or other sounds that can indirectly guide the generated brain waves, the user can hear only the sounds generated from the external sound source device 19,
This sound and the sound wave based on the audio signal generated from the sine wave generation circuit 3 synergize with each other, so that a predetermined brain wave can be induced more effectively.

[0027]

As described above, according to the electroencephalogram guiding apparatus of the present invention, since the plane wave speaker is connected to the output side of the oscillator that generates the sine wave which is the component of the electroencephalogram signal, It becomes possible to directly stimulate the brain with the sound waves of the same frequency to induce the brain waves of the same frequency, and thus the brain waves of the same frequency can be induced very easily in a short time.

Furthermore, especially the alpha wave to be induced,
Since the frequency of brain waves such as theta wave and delta wave is low frequency, sound waves of the same frequency output from the plane wave speaker are silent (inaudible sound) or nearly silent, and therefore,
There is little feeling that the device is being used, and when it is used to induce an electroencephalogram of alpha waves, for example, it is possible to easily perform intellectual work such as studying while using this device. Since intelligent work is performed in a state where waves are always guided, the work efficiency can be significantly improved.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating an example of an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing an example of a plane wave speaker.

FIG. 3 is a configuration diagram showing another example of the embodiment of the present invention.

FIG. 4 is a cross-sectional view showing an example of headphones including a plane wave speaker.

[Explanation of symbols]

 1 oscillator 2 plane wave speaker 3 sine wave generating circuit 4 frequency regulator 5 OP amplifier 6 timer 7 headphones 8 case 9 diaphragm 10 voice coil 11 edge 12 magnet 13 yoke 14 pole 15 net 16 vent hole 17 cord 18 ear pad 19 external sound source device 20 external terminals

Claims (2)

[Claims] 1. An electroencephalogram guiding apparatus comprising a plane wave speaker connected to an output side of an oscillator that generates a sine wave that is a component of an electroencephalogram signal. 2. The electroencephalogram guiding apparatus according to claim 1, wherein the plane wave speaker is built in a headphone.