Functional hallucinations occur when a normal sensory stimulus is required to precipitate a hallucination in that same sensory modality, as when voices are heard only when the doorbell rings.
Functional hallucinations are hallucinations of any modality that are experienced simultaneously with a normal stimulus in that modality.
In Functional hallucination, the hallucination Opens in new window is provoked by a stimulus and occurs in the same sensory modality as the stimulus.
Both the stimulus and the hallucination are perceived simultaneously and are also perceived as being distinct. Thus, a patient may hear a voice only when a tap is turned on and then hears both the sound of running water and the sound of the voice.
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- Research data for this literature has been adapted from these following manuals:
- Crash Course Psychiatry - E-Book By Katie FM Marwick, Steven Birrell
- Core Psychiatry E-Book, Edited by Padraig Wright, Julian Stern, Michael Phelan