Spatial frequency discrimination in schizophrenia

Brian F. O'Donnell, Geoffrey F. Potts, Paul G. Nestor, Kiriaki C. Stylianopoulos, Martha E. Shenton, Robert W. McCarley

Research output: Contribution to journalArticle

43 Scopus citations


Pathways within the visual system can be distinguished on the basis of selectivity for low or high spatial frequencies. Spatial frequency discrimination was evaluated in 17 medicated male patients with schizophrenia and 19 male control subjects. Subjects were required to discriminate whether pairs of high contrast, sinusoidally modulated gratings were the same or different in spatial frequency. Accuracy performance was compared at high, medium, and low spatial frequencies on tasks matched for control performance. Patients showed a greater performance decrement of 12% on low as compared with 4% on high spatial frequencies. These findings suggest a disturbance of right hemisphere mechanisms involved in spatial perception and attention in schizophrenia.

Original languageEnglish (US)
Pages (from-to)620-625
Number of pages6
JournalJournal of Abnormal Psychology
Issue number4
StatePublished - Nov 2002

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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    O'Donnell, B. F., Potts, G. F., Nestor, P. G., Stylianopoulos, K. C., Shenton, M. E., & McCarley, R. W. (2002). Spatial frequency discrimination in schizophrenia. Journal of Abnormal Psychology, 111(4), 620-625.