brainwaves & binaural beats
Brainwaves are categorized by frequency and indirectly by function.
Beta brainwaves (13-40 Hz) are associated with active thinking and concentration.
Alpha brainwaves (7-13 Hz) are associated with relaxation and drowsiness.
Theta brainwaves (4-7 Hz) are associated with dreams, meditation, and REM sleep.
Delta brainwaves are associated with deep sleep.

Binaural beat files are used to synchronize brain waves. This site has lots of free binaural beat MP3 files you can download. The binaural beats require the use of headphones and can be played on your computer, MP3 player, or burned to CD.
I love to hear from people who've used these files. Feedback is always appreciated. jetcityorange at gmail dot com
Don’t forget to sit.
Copyright 2011 Jerry Whiting. All rights reserved.
