JPH0335930B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electroencephalogram inducer using a fluctuating magnetic field.

(Prior Art) Recent research on cerebral physiology has revealed the relationship between brain waves and mental activity, and it has been found that changes in brain wave signals affect the mind and body. Brain waves that occur naturally in the brain do not have a fixed frequency or amplitude, but are constantly changing over time and are a mixture of various signals. It is known that especially in a stable state such as when a living body is at rest, brain wave signals called alpha waves appear conspicuously accompanied by a rhythm of fluctuations, and the fluctuations of alpha waves exhibit a correlation of 1/f characteristics.
("The World of Fluctuations" by Toshimitsu Musha, published by Kodansha) Here, fluctuations with 1/f characteristics are rhythms seen in wave phenomena that occur in nature, where the amplitude fluctuations of the signal are inversely proportional to the frequency fluctuation components. It is something.

(Problem to be solved by the invention) Until recently, monotonous sine wave signals for brain waves were only applied to the brain, and when used for a long period of time, a habit-like effect was observed and the effect became less effective. Problems have arisen in that people often find that their weight decreases by half or that they feel uncomfortable while using the product.

In view of these drawbacks, the present invention has been developed to add changes in frequency and amplitude to the electroencephalogram signal, which is based on a sine wave, due to fluctuations and rhythms of the 1/f characteristic that accompany naturally occurring brain waves, and to add it to the brain. The purpose of this is to make it easily familiar to the brain and to promote the mental state very effectively to obtain good results.

(Means for Solving the Problems) The present invention provides a random signal generation circuit, a filter having a frequency-amplitude relationship of 1/f for a white noise signal generated by the random signal generation circuit, and a sine wave Consists of a frequency adjuster that determines the reference frequency of an appropriate brain wave signal based on , a voltage controlled oscillation circuit including a frequency modulation circuit, an amplitude modulation circuit, an output regulator, a power amplification circuit, and a coil that generates an extremely low frequency magnetic field. It consists of a fluctuation signal generator, a voltage controlled oscillation circuit is connected to a frequency adjuster, an amplitude modulation circuit is connected to this voltage controlled oscillation circuit, an output adjuster is connected to this amplitude modulation circuit, and a voltage controlled oscillation circuit is connected to this voltage controlled oscillation circuit. The present invention is characterized in that a power amplification circuit is connected, a coil is connected to the power amplification circuit, and the random signal generation circuit is connected to the voltage controlled oscillation circuit and the amplitude modulation circuit via a filter.

(Action of invention) The operation of the present invention will be explained.

When using the electroencephalogram inducer using a fluctuating magnetic field according to the present invention, an electroencephalogram signal having a fluctuation of 1/f characteristic in the living body that appears when the living body is at rest is generated so as to be as close as possible to the electroencephalogram that naturally occurs in the brain. To generate the brain wave signal, which is based on a sine wave, 1/f is applied.
The phases of frequency modulation and amplitude modulation are synchronized according to the noise signal to generate a fluctuating brain wave signal with 1/f characteristics.The signal is power amplified and a signal current is passed through the coil to generate ultra-low frequency waves. When a fluctuating magnetic field is generated and applied to the brain, it induces brain waves in the brain that are close to the rhythm with natural 1/f characteristic fluctuations, thereby increasing the induction effect.

(Example) Embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, the electroencephalogram inducing device 1 using a fluctuating magnetic field according to the present invention has the following configuration.

A random signal generation circuit 2 that randomly generates a white noise signal A is provided.

A filter 3 having a frequency-amplitude relationship of 1/f characteristics is provided for inputting a white noise signal A generated by a random signal generating circuit 2.

A fluctuation signal generator 4 is provided which generates a 1/f characteristic fluctuation rhythm in an electroencephalogram signal based on a sine wave based on a 1/f noise signal B outputted through a filter 3. This fluctuation signal generator 4
includes a frequency adjuster 5 for determining a reference frequency of an appropriate electroencephalogram signal based on a sine wave, and a frequency modulation circuit for simultaneously oscillating the reference frequency of an electroencephalogram signal based on a sine wave and performing frequency modulation. It consists of a voltage controlled oscillation circuit 6, an amplitude modulation circuit 7, an output regulator 8, a power amplification circuit 9, and a coil 10 that generates an extremely low frequency magnetic field.

The connection relationship of the constituent elements is as follows.

A voltage controlled oscillation circuit 6 is connected to the frequency regulator 5, an amplitude modulation circuit 7 is connected to the voltage controlled oscillation circuit 6, an output regulator 8 is connected to the amplitude modulation circuit 7, and an electric power is connected to the output regulator 8. an amplifier circuit 9 is connected, a coil 10 is connected to this power amplifier circuit 9,
The random signal generation circuit 2 is passed through the filter 3 to the voltage controlled oscillation circuit 6 and the amplitude modulation circuit 7.
Connect to.

When using the electroencephalogram inducer 1 using a fluctuating magnetic field according to the present invention, a white noise signal A is first generated by the random signal generator 2.

Next, the filter 3 forms a 1/f noise signal B having a 1/f characteristic in the relationship between frequency and amplitude with respect to the input of the white noise signal A. Here, the white noise signal A includes amplitudes ranging from gentle fluctuations to steep fluctuations, but the 1/f noise signal B output from the filter 3 contains steep fluctuations compared to gentle fluctuations. The amplitude of is small.

Next, the frequency adjuster 5 causes the voltage controlled oscillation circuit 6 to oscillate at an appropriate reference frequency of an electroencephalogram signal based on a sine wave.

Next, this reference frequency is set to the 1/f noise signal B.
Based on this, the frequency is modulated by the voltage controlled oscillation circuit 6 including a frequency modulation circuit to generate an FM signal C (a signal whose frequency change is a fluctuation of 1/f characteristic).
output.

Next, the amplitude modulation circuit 7 performs amplitude modulation on the basis of the FM signal C and the 1/f noise signal B whose frequency modulation phase is synchronized with the FM signal C. A signal having a 1/f characteristic fluctuation is generated due to a correlation in which the fluctuating component is inversely proportional to the amplitude fluctuation.

Next, the 1/f characteristic fluctuation signal D is sent to the output regulator 8.
The 1/f characteristic fluctuation signal D is input to a power amplification circuit 9 via the power amplification circuit 9, and the 1/f characteristic fluctuation signal D is converted into a strong output signal E.

Next, this output signal E is input to the coil 10,
The coil 10 generates a very low frequency fluctuating magnetic field.

For example, if α waves (8 to 12 Hz) are set as an appropriate reference frequency by the frequency adjuster 5, the α wave signal becomes a 1/f characteristic fluctuation signal D that changes with the rhythm of 1/f characteristic fluctuations, and is output. The strong output signal E obtained by the power amplifier circuit 9 after passing through the regulator 8 causes the coil 10 to generate a varying magnetic field of an α-wave signal with a rhythm of 1/f characteristic fluctuations.

Next, when the coil 10 is brought close to the head, an alpha wave signal with a rhythm of 1/f characteristic fluctuations that is close to natural can be induced in the brain by electromagnetic induction.

(Effects of the Invention) According to the brain wave inducer using a fluctuating magnetic field according to the present invention, components of brain wave signals with fluctuations of 1/f characteristics due to natural or biological rhythms are induced in the brain by electromagnetic induction. , it is close to naturally occurring brain waves, so it is less unreasonable and easier to get used to.

In addition, since the sine wave signal for brain waves has a rhythm of 1/f characteristic fluctuation, no habituation effect is observed, and the effect does not decline even after long-term use, even if the signal output is weakened. A sufficient effect can be obtained.

Furthermore, the discomfort during use is reduced by half, making it easier to use, and very good results can be obtained in inducing a stable mental state.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an electroencephalogram inducing device using a fluctuating magnetic field according to the present invention, and FIGS. 2A to 2E are waveform diagrams showing output waveforms at points A to E in FIG. 1. (Explanation of symbols of main parts), 1... EEG inducer using fluctuating magnetic field, 2... Random signal generation circuit, 3... Filter, 4... Fluctuation signal generator,
5... Frequency regulator, 6... Voltage controlled oscillation circuit,
7... Amplitude modulation circuit, 8... Output regulator, 9...
Power amplifier circuit, 10...coil.

Claims (1)

[Claims] 1. A random signal generation circuit, a filter whose frequency and amplitude relationship has a 1/f characteristic for the white noise signal generated by the random signal generation circuit, and a reference frequency of an appropriate brain wave signal based on a sine wave. It consists of a frequency regulator that determines the frequency, a voltage controlled oscillation circuit that includes a frequency modulation circuit, an amplitude modulation circuit, an output regulator, a power amplification circuit, and a fluctuation signal generator consisting of a coil that generates an extremely low frequency magnetic field. A controlled oscillation circuit is connected, an amplitude modulation circuit is connected to this voltage controlled oscillation circuit, an output regulator is connected to this amplitude modulation circuit, a power amplifier circuit is connected to this output regulator, and a coil is connected to this power amplifier circuit. , and the random signal generation circuit is connected to the voltage controlled oscillation circuit and the amplitude modulation circuit via a filter.