If you mean consciousness as opposed to being unconscious, the answer is awareness of stimuli and surroundings.
However, if you're asking what consciouness is, scientists have been mulling over that question for a few centuries without being able to form a consensus and pin it down. Opinion: the reason they can't form an unequivocal definition of consciouness is because they don't want to acknowledge the existence of the soul.
Has he gained consciousness yet?
Consciousness
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Since there is broadly a lack of necessity for the plural form of consciousness, there isn't necessarily a cataloged form of it. Because of this, forms of a pluralized consciousness are often denoted in terms such as a "hive mind" or "collective consciousness".
Yes,it does constitutes perjury
Consciousness resides in the cerebral cortex.
Consciousness - album - was created in 2008.
Universal Consciousness was created in 1972.
Anthropology of Consciousness was created in 1990.
Thinking about Consciousness was created in 2002.
Consciousness Explained was created in 1991.
A Universe of Consciousness was created in 2000.