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Cognitive and neural processes in non-clinical auditory hallucinations

Journal Article


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Abstract


  • BACKGROUND: The nosological status of auditory hallucinations in non-clinical samples is unclear. AIMS: To investigate the functional neural basis of non-clinical hallucinations. METHOD: After selection from 1206 people, 68 participants of high, medium and low hallucination proneness completed a task designed to elicit verbal hallucinatory phenomena under conditions of stimulus degradation. Eight subjects who reported hearing a voice when none was present repeated the task during functional imaging. RESULTS: During the signal detection task, the high hallucination-prone participants reported a voice to be present when it was not (false alarms) significantly more often than the average or low participants (P<0.03, d.f.=2). On functional magnetic resonance imaging, patterns of activation during these false alarms showed activation in the superior and middle temporal cortex (P<0.001). CONCLUSIONS: Auditory hallucinatory experiences reported in non-clinical samples appear to be mediated by similar patterns of cerebral activation as found during hallucinations in schizophrenia.

Authors


  •   Barkus, Emma
  •   Stirling, John (external author)
  •   Hopkins, Richard (external author)
  •   Mckie, Shane (external author)
  •   Lewis, Shon (external author)

Publication Date


  • 2007

Citation


  • Barkus, E., Stirling, J., Hopkins, R., Mckie, S. & Lewis, S. (2007). Cognitive and neural processes in non-clinical auditory hallucinations. British Journal of Psychiatry, 191 (S51), s76-81.

Scopus Eid


  • 2-s2.0-37249048308

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1959&context=hbspapers

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/910

Has Global Citation Frequency


Start Page


  • s76

End Page


  • 81

Volume


  • 191

Issue


  • S51

Abstract


  • BACKGROUND: The nosological status of auditory hallucinations in non-clinical samples is unclear. AIMS: To investigate the functional neural basis of non-clinical hallucinations. METHOD: After selection from 1206 people, 68 participants of high, medium and low hallucination proneness completed a task designed to elicit verbal hallucinatory phenomena under conditions of stimulus degradation. Eight subjects who reported hearing a voice when none was present repeated the task during functional imaging. RESULTS: During the signal detection task, the high hallucination-prone participants reported a voice to be present when it was not (false alarms) significantly more often than the average or low participants (P<0.03, d.f.=2). On functional magnetic resonance imaging, patterns of activation during these false alarms showed activation in the superior and middle temporal cortex (P<0.001). CONCLUSIONS: Auditory hallucinatory experiences reported in non-clinical samples appear to be mediated by similar patterns of cerebral activation as found during hallucinations in schizophrenia.

Authors


  •   Barkus, Emma
  •   Stirling, John (external author)
  •   Hopkins, Richard (external author)
  •   Mckie, Shane (external author)
  •   Lewis, Shon (external author)

Publication Date


  • 2007

Citation


  • Barkus, E., Stirling, J., Hopkins, R., Mckie, S. & Lewis, S. (2007). Cognitive and neural processes in non-clinical auditory hallucinations. British Journal of Psychiatry, 191 (S51), s76-81.

Scopus Eid


  • 2-s2.0-37249048308

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1959&context=hbspapers

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/910

Has Global Citation Frequency


Start Page


  • s76

End Page


  • 81

Volume


  • 191

Issue


  • S51