ThoughtStream measures changes in the electrical conductivity of your skin. When skin moisture increases conductivity goes down; moist skin conducts electricity better than dry skin. As you relax, your skin moisture content decreases meaning that electrical conductivity decreases as well -- a highly accurate reflection of changes in your physiology. This information is translated into audio and visual signals which provides the biofeedback reading.

You'll enjoy using ThoughtStream because of the immediate and positive reinforcement you will receive. Because ThoughtStream is an active process-- you receive immediate feedback about subtle changes that you normally would not be aware of-- you learn to recognize states of relaxation and stress more easily. You become more familiar with the kinds of mental activities that affect these levels. In short: Thought stream is a tool for self awareness and self-modification.