Rainforest w/ Alpha Brainwave Pulses Author:Jeffrey Thompson In states of deep relaxation, your brainwave patterns change to slow frequency "Alpha" waves. Dr. Jeffrey Thompson has developed unique ways to embed these alpha pulses into multi-layered, 3-dimensional nature sound recordings. After a few minutes of listening, your own brainwaves naturally "lock" onto the alpha pulses and lead you easily into... more » states of rejuvenating relaxation.« less