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Altered early visual processing components in hallucination-prone individuals

  • James Barnes
    ,
  • David Schwartzman
    ,
  • Ksenija Maravic
    ,
  • Cornelia Kranczioch
  • Oxford Brookes University
    ,
  • University of Portsmouth
Research Output: Contribution to journal Article Peer-review

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.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 933-937

Journal (Volume, Issue Number)

NeuroReport (Volume 19, Issue 9)

Publication milestones

  • Published - 01/01/2008

Publication status

Published - 01/01/2008

ISSN

0959-4965

External Publication IDs

  • handle.net: 10547/300045
  • Scopus: 52249117041

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