Quote Originally Posted by hseaver View Post
I'm not disputing you on this, but I recently got a CD produced by Dr. Jeffry Thompson, called "Gamma Meditation System". The booklet that comes with it talks (briefly) on some of the same stuff in the paper you mention. I haven't listened to the CD enough to really give it a good test. He says "the brainwave entrainment pulses woven into the Gamma Meditation System are at a frequency of 40 Hz."
These "brainwave entrainment pulses" are equivalent to a monotonous drum beat, being in the low bass audio range. So Jeffrey is creating them from audio and they obviously have the same entrancing effect as any other such audible beat. Nothing to do with binaural beats. The guy is playing with audio, and his words, to make it 'sound' better.