Much like western medicine brainwave entrainment works on scientific principle, research and testing. There are over 70 years of solid research behind brainwave entrainment:

Pre-1940’s

• Visual (photic) brainwave entrainment was first documented in 1934. However, evidence of visual entrainment has been traced as far back as 200 AD.

1940’s

• Dempsey and Morison discovered that repetitive tactile stimulation could also produce entrainment.

1950’s

• Dr. Chatrian observed auditory entrainment in response to clicks at a frequency of 15 per second.

1960’s

• Anesthesiologist M.S. Sadove, MD, used photic stimulation to reduce the amount of anesthesia needed for surgery.
• Andrew Neher found that rhythmic pounding dramatically altered brain wave activity.

1970’s

• In Scientific American, Dr. Gerald Oster examined how combining two pure tones, which he termed Monaural Beats, resulted in a rhythmic beat which he called Binaural Beats.

1980’s

• The Department of Neuropsychiatry at Osaka University Medical School in Japan found that photic stimulation produced "cerebral synchronization".
• Michael Hutchison’s book MegaBrain outlines the many possible uses of entrainment, from meditation to super-learning.
• Arturo Manns published a study which indicated the amazingly strong entrainment value of Isochronic Tones, as opposed to Monaural or Binaural beats
• Dr. Brockopp analyzed audio-visual brain stimulation, and in particular hemispheric synchronization, during electroencephalogram monitoring. He said, "By inducing hemispheric coherence the machine can contribute to improved intellectual functioning of the brain."

1990’s

• Drs. Russell, Carter, and others explored the vast potential of using entrainment with ADD and learning disorders.
• Research has also been conducted on the effectiveness of entrainment on PMS, Chronic Fatigue, Chronic Pain, Depression, Hypertension and a number of other disorders.