Altered early visual processing components in hallucination-prone individuals
Abstract
Of the nonpathological general population, 0.5% experience one or more visual hallucinations on a regular basis without meeting the criteria for clinical psychosis. We investigated the relationship between a proneness to visual hallucinations in 'normal' individuals and early visual event-related potentials during the perception of faces, Mooney faces and scrambled Mooney faces. Findings indicated that individuals prone to visual hallucinations displayed significantly reduced early event-related potential components (P1, P2, but not N170) over parieto-temporal regions. These findings support previous suggestions that individuals who experience visual hallucinations exhibit abnormal early visual processing resulting from degraded visual input, in this case owing to disruption of low level visual processes.Citation
Schwartzman, D., Maravic, K., Kranczioch, C. and Barnes, J. (2008) 'Altered early visual processing components in hallucination-prone individuals', Neuroreport, 19(9), pp.933-937Publisher
Lippincott, Williams & WilkinsJournal
NeuroreportAdditional Links
http://www.ncbi.nlm.nih.gov/pubmed/18520996Type
ArticleLanguage
enISSN
0959-4965ae974a485f413a2113503eed53cd6c53
10.1097/WNR.0b013e328301a640