Binaural beats and BrainWaves
(Brainwave Entrainment)

Source:   http://blog.musicalrelaxation.com/article.php?sid=5

Frequency range

Name

Usually associated with:

> 40 Hz

Gamma waves

 Higher mental activity, including perception, problem solving, fear, and consciousness

13–40 Hz

Beta waves

Active, busy or anxious thinking and active concentration, arousal, cognition

7–13 Hz

Alpha waves

Relaxation (while awake), pre-sleep and pre-wake drowsiness

4–7 Hz

Theta waves

Dreams, deep meditation, REM sleep

< 4 Hz

Delta waves

Deep dreamless sleep, loss of body awareness

 

Brainwave entrainment has many historical, and often social, manifestations. Drum circles, chanting, and staring at a fire were all ways that our ancestors partook in the phenomenon.

 

 

40 Hz
Gamma

information-rich task processing and high-level information processing, extremal abilities

above 18
High Beta

fully awake, normal state of alertness, stress and anxiety

15 - 18 Hz
Mid-range Beta

increased mental abilities, focus, alertness, IQ

12 - 15 Hz
Low Beta

relaxed focus, improved attentive abilities

8 - 12 Hz
Alpha

light relaxation, “super learning”, positive thinking

3 - 8 Hz
Theta
deep relaxation, meditation, increased memory, focus, creativity, lucid dreaming, hypnagogic state
0.1 - 3 Hz
Delta
deep sleep, lucid dreaming, increased immune functions, hypnosis

 

 

U.S. Patent No. 5289438

 

  omega
  0.875 - 1.75 Hz
delta
  1.75 - 3.5 Hz
theta
  3.5 - 7.0  Hz
alpha
  7.0 - 14.0 Hz
beta
  14.0 - 28.0 Hz
gamma
  28.0 - 56.0 Hz
epsilon
  56.0 - 112.0 Hz
zeta
  112.0 - 224.0 Hz