Source+7

Stein, Tracie, PhD, MPH. "Supporting Thousands of Therapists & Advocating for Healthy Therapy & Marriage Counseling." //Goodtherapy//. N.p., 24 July 2012. Web. 20 Aug. 2012. .

Facts:
 * 1) Binaural beats were first discovered in the late 1800's, however it was introduced to the public in the 1970's.
 * 2) Our ears hear tones in Hertz (Hz).
 * 3) The higher the frequencies the faster the beat.
 * 4) Many binaural beats can improve skills in coordination and education.
 * 5) B.beats can be used for cancer because they reduce pain.
 * 6) Binaural beats have been around for decades, but now they are readily inexpensive and available.
 * 7) There is no way to overdose on a binaural beat.
 * 8) The only way a binaural beat can be dangerous is if it is played at extremely loud frequencies.
 * 9) This is dangerous because it can be deadly for the hunam ear drums.
 * 10) Many binaural beats have different waves combined or mixed throughout the entire session.
 * 11) For example, one session could be ten minutes long and have a beat of alpha in one ear and a beat of delta in the other.
 * 12) The term "Binaural beat" comes from the brains tendency to hear the difference between two similar tones that are played in opposite ears and the same time.
 * 13) At any time while listening binaural beats, the mind can become deeply entranced or fall into a deep sleep.
 * 14) Since the 1970's, binaural beats have been used in more commercail ways.
 * 15) Binaural beats have been used since then for sleep deprevation, meditation, reduce stress, reduce pain, etc.