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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.

Definition contributed by Anonymous

Asserted relationships to other concepts

hallucination
is a kind of

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hallucination
is a part of

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are a kind of
hallucination

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are a part of
hallucination

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Tasks that are asserted to measure hallucination

Task Contrast Measure

Term BIBLIOGRAPHY