The relaxation response: its subjective and objective historical precedents and physiology

The relaxation response is a self-induced altered state of consciousness. During the last 15 years, our laboratory has worked to define its physiology, to establish its subjective and objective historical precedents, and to test its clinical usefulness. The relaxation response is believed to be the counterpart of the emergency response and is characterized by acute and chronic changes consistent with decreased sympathetic nervous system activity.