The ThoughtStream personal Galvanic Skin Response (GSR)* biofeedback system measures tiny, rapid fluctuations in skin moisture associated with the degree of arousal via a compact palm sensor presents these changes to you by both audio and visual means.
You learn to lower the pitch of a sound heard through headphones or make the LED's on the display console turn from red to green.
Use the Mental Games multimedia software to fine-tune your ability to relax and focus at the same time.
 
*Galvanic Skin Response (GSR). Fluctuations in the skin's electrical resistance often associated with emotional states.
 
Mental Games and ThoughtStream are intended for use as tools for enhancing consciousness, promoting relaxation and personal growth. They are not intended for use as medical diagnostic or therapeutic devices, and no medical claims of any sort are made for them, either singly or in combination.