Altered state of consciousness

Any condition that is significantly different from a normal waking state An altered state of consciousness (ASC), also called an altered state of mind, altered mental status (AMS), mind alteration, or an altered state of awareness, is a condition significantly different from ordinary waking consciousness, in which normal consciousness is suspended, replaced, or otherwise altered. Such alterations in mental state are generally temporary and are commonly induced, although in the broadest sense sleep itself constitutes an altered state of consciousness. The term is more commonly applied to induced states, ranging from those produced by drugs to those arising through meditation practices. Debate has concerned whether the various induced states are fundamentally identical or whether states occurring in religious contexts differ in kind. This discussion has also raised the possibility that "altered states of consciousness" may itself constitute a category error by suggesting that a number of discrete neurophysiological or brain states can appropriately be subsumed under a single heading. History of the term By 1892, the expression was in use in relation to hypnosis, though there is an on