Spatial Frequency Discrimination in Schizophrenia
Document Type
Article
Publication Date
2002
Keywords
spatial frequency discrimination, schizophrenia, attention, right hemisphere mechanisms
Digital Object Identifier (DOI)
https://doi.org/10.1037/0021-843X.111.4.620
Abstract
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.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Journal of Abnormal Psychology, v. 111, issue 4, p. 620-625.
Scholar Commons Citation
O'Donnell, B. F.; Potts, Geoffrey; Nestor, P. G.; and Stylianopoulos, K. C., "Spatial Frequency Discrimination in Schizophrenia" (2002). Psychology Faculty Publications. 1735.
https://digitalcommons.usf.edu/psy_facpub/1735
