the procedure, or the state induced by that procedure, in which suggestion is used to evoke changes in sensation, perception, cognition, emotion, or control over motor behavior. Subjects appear to be receptive, to varying degrees, to suggestions to act, feel, and behave differently than in an ordinary waking state. The exact nature of hypnotic suggestibility, and its possible therapeutic uses, are still being studied and debated. As a specifically psychotherapeutic intervention, hypnosis is referred to as hypnotherapy. See also altered state of consciousness; heterohypnosis; posthypnotic suggestion; self-hypnosis; waking hypnosis.