Topic summary
Altered consciousness
Extracted from the Wikipedia article Altered state of consciousness.
Pharmacological
Lysergic acid diethylamide, or LSD, activates serotonin receptors (the amine transmitter of nerve urges) in brain matter. LSD acts on certain serotonin receptors, and its effects are most prominent in the cerebral cortex, an area involved in attitude, thought, and insight, which obtains sensory signs from all parts of the body. LSD's main effects are emotional and psychological. The ingester's feelings may alter quickly through a range from fear to ecstasy (Humphrey, N. 2001). This may cause one to experience many levels of altered consciousness. It has also been shown to induce ego death (or ego dissolution).