Electroencephalogram therapy uses specially prepared sound and light signals and electrical pulses to act on people's ears, eyes and related meridian acupuncture points, and uses changes in sound and light frequencies to affect and regulate the level of brain electrical activity and excitement of the human body, so as to relieve tension and control pain. EEG therapy is suitable for a series of mental symptoms such as insomnia, neurasthenia, obsessive-compulsive disorder, tension, anxiety, etc., and is also an important adjunct to other psychotherapy.
Modern scientific research on the effects of rhythmic sound and rhythmic light began in the mid-10th century of three-brainwave therapy, when scientist Gray Walter discovered that brainwave activity responds to flashing light, especially α and theta frequencies, which is called the "light-following response". A well-known example is gazing at a flame with a flickering rate averaged in the α/θ range, which puts a person into a state of relaxation and sleep.
Sound has also been shown to produce similar results, particularly pulsating sounds and binaural differential beats. The latter effect, binaural differential beats: when there is a slight difference between what one ear hears and what the other hears, and the brain actually synchronizes with the difference. When observed with electroencephalogram, it can be found that when the frequency difference between the two sounds is 10Hz, the brain will produce 10Hz brain waves accordingly; When the frequencies of two sounds differ by 6Hz, the brain produces 6Hz brain waves accordingly.
According to modern brain electrophysiological and neuropsychological research, brain wave activity is mainly divided into four groups of patterns: β, α, θ, and δ, and a certain pattern of brain wave activity is associated with a specific emotional state. There are several international classifications of EEG, here is the Schwab classification (1951) in the frequency classification method:
β wave
The frequency is approximately between 14-30Hz. Mental state of a person: a state of tension.
When most people are awake, they are sensitive to the external environment; emotional agitation, anxiety; alertness and full attention; Highly concentrated and engaged in highly intellectual activities; Vitality stimulated.
α wave
The frequency is between 9-13Hz. People's mental state: relaxed state.
When most people are calm and close their eyes to recuperate; The brain is awake and relaxed, and it is easy to concentrate
EEG therapy is not easy to be interfered with by the outside world in study and work; Positive emotional state, mental clarity
optimistic; Reduced stress and anxiety, stopping the cycle of bad emotions; Calm and relax, rejuvenate.
θ wave
The frequency is between 4-8Hz. People's mental state: deep relaxation; Light sleep state, also known as contemplation, meditation, and subconscious state. The subconscious mind is susceptible to suggestion; Creativity and inspiration suddenly; perception, full of intuition; Accelerate learning and memory.
δ wave
The frequency is between 0.5-3Hz. Mental state of a person: the state of sleep. The lowest brain wave activity occurs when a person is in deep dreamless sleep. Sometimes found in quite sophisticated contemplators.
γ wave
The frequency is above 31Hz. Each Greek letter represents a wave band, with theta and δ waves called slow waves and β and γ waves called fast waves. β waves can also be divided into low β waves (β1) and high β waves (β2).
The information comes from Baidu Encyclopedia
The information comes from Baidu Encyclopedia
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