Monday, January 5, 2009

Unconsciousness & Coma

Unconsciousness, more appropriately referred to as loss of consciousness or lack of consciousness, is a dramatic alteration of mental state that involves complete or near-complete lack of responsiveness to people and other environmental stimuli. Being in a comatose state or coma is an illustration of unconsciousness. Fainting due to a drop in blood pressure and a decrease of the oxygen supply to the brain is an illustration of a temporary loss of consciousness.
In medicine, a coma is a profound state of unconsciousness. A comatose person cannot be awakened, fails to respond normally to pain or light, does not have sleep-wake cycles, and does not take voluntary actions.
One day, my roomate got up suddenly and she didn't wake up at all. Wasn't she under the unconsciousness, so she still had the daydream, wasn't she? I hope she can sleep well and don't sit up straight abruptly.

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