| consciousness | Sense of awareness of self and of the environment. (12 Dec 1998) |
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| consciousness disorders | Organic mental disorders in which there is marked impairment of awareness. (12 Dec 1998) |
| clouding of consciousness | A state in which the patient's mental state is clouded and thus not fully in contact with the environment. (05 Mar 2000) |
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| double consciousness | A condition in which one lives in two seemingly unrelated mental states, being, while in one, unaware of the other or of the acts performed in the other. See: dual personality. (05 Mar 2000) |
| threshold of consciousness | The lowest point at which a stimulus sensation can be perceived. (05 Mar 2000) |
| field of consciousness | The content of awareness at any given moment. (05 Mar 2000) |
| loss of consciousness | Total unresponsiveness. An important neurologic sign. (27 Sep 1997) |