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Binaural beats are auditory illusions which are perceived when two tones of two different frequencies are played simultaneously. Physicist Heinrich Wilhelm Dove, is said to have discovered the effect in 1839.
When two different frequencies are each played into the two ears, the brain then attempts to reconcile both tones, by creating a new third frequency, which is termed as the binaural beat. For example, if a frequency of 200 Hz is played into your left ear, and a frequency of 210 Hz is played into your right ear, your brain “hears” a third frequency pulsing at 10 Hz, which is the difference between the two frequencies.
The benefits of this technique help in brain entrainment, there are five know brain frequencies each associated with a different benefit.
Types of Binaural Beats
GAMMA
- Frequency range: 40 Hz to 100 Hz (Highest)
- Too much: Anxiety, high arousal, stress
- Too little: ADHD, depression, learning disabilities
- Optimal: Binding senses, cognition, information processing, learning, perception, REM sleep
Increase gamma waves: Meditation
BETA
- Frequency range: 12 Hz to 40 Hz (High)
- Too much: Adrenaline, anxiety, high arousal, inability to relax, stress
- Too little: ADHD, daydreaming, depression, poor cognition
- Optimal: Conscious focus, memory, problem solving
Increase beta waves: Coffee, energy drinks, various stimulants
ALPHA
- Frequency range: 8 Hz to 12 Hz (Moderate)
- Too much: Daydreaming, inability to focus, too relaxed
- Too little: Anxiety, high stress, insomnia, OCD
- Optimal: Relaxation
Increase alpha waves: Alcohol, marijuana, relaxants, some antidepressants
THETA
- Frequency range: 4 Hz to 8 Hz (Slow)
- Too much: ADHD, depression, hyperactivity, impulsivity, inattentiveness
- Too little: Anxiety, poor emotional awareness, stress
- Optimal: Creativity, emotional connection, intuition, relaxation
Increase theta waves: Depressants
DELTA
- Frequency range: 0 Hz to 4 Hz (Slowest)
- Too much: Brain injuries, learning problems, inability to think, severe ADHD
- Too little: Inability to rejuvenate body, inability to revitalize the brain, poor sleep
- Optimal: Immune system, natural healing, restorative / deep sleep
Increase delta waves: Depressants, sleep
