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in the broadest sense of the word, is a perception in the absence of a stimulus. In a stricter sense, hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid, substantial, and located in external objective space.

NPicchetti about six years ago.

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"Initial definition retrieved from http://en.wikipedia.org/wiki/Hallucination"
NPicchetti (about six years ago)

Term History

REVISION 2

Definition contributed by NPicchetti about six years ago:in the broadest sense of the word, is a perception in the absence of a stimulus. In a stricter sense, hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid, substantial, and located in external objective space. (from Wikipedia)

REVISION 1

Definition contributed by SAdministrator about eight years ago:No definition submitted yet

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