What is an altered state of consciousness?
A Phenomenological Inquiry into the North American Shaman's Experience of the Altered State of Consciousness April 1, 2009 Antti Revonsuo, Sakari Kallio, Pilleriin Sikka
“Altered State of Consciousness” (ASC) has been defined as a changed overall pattern of conscious experience, or as the subjective feeling and explicit recognition that one's own subjective experience has changed. We argue that these traditional definitions fail to draw a clear line between altered and normal states of consciousness (NSC). We outline a new definition of ASC and argue that the...