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Spatial frequency masking in postive- and negative-symptom schizophrenia

Citation

Slaghuis, WL and Curran, CE, Spatial frequency masking in postive- and negative-symptom schizophrenia, Journal of Abnormal Psychology, 108, (1) pp. 42-50. ISSN 0021-843X (1999) [Refereed Article]

DOI: doi:10.1037/0021-843X.108.1.42

Abstract

The role of transient and sustained channels in masking was investigated in groups with positive and negative symptoms in schizophrenia and in a control group. The target stimulus was a 3.0 c/deg sinusoidal grating, which was masked at 11 stimulus-onset asynchronies between -40 to 360 ms by a 1.0 c/deg mask or an 11.0 c/deg mask. The results showed that there was no difference between the control and positive-symptom groups in the perception of the 3 c/deg target stimulus, nor was there a difference when the target was masked by 1 or 11 c/deg masking stimuli. In comparison with the control and positive-symptom groups, the negative-symptom group showed a significantly higher threshold for the perception of the 3 c/deg target stimulus and more masking with a 1 c/deg mask, but not with an 11 c/deg mask. The results provide evidence for distinguishable differences in visual masking between groups with positive and negative symptoms in schizophrenia.

Item Details

Item Type:Refereed Article
Research Division:Psychology and Cognitive Sciences
Research Group:Psychology
Research Field:Sensory Processes, Perception and Performance
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Psychology and Cognitive Sciences
Author:Slaghuis, WL (Dr Walter Slaghuis)
Author:Curran, CE (Mr Charles Edward Curran)
ID Code:17376
Year Published:1999
Web of Science® Times Cited:42
Deposited By:Psychology
Deposited On:1999-08-01
Last Modified:2000-05-13
Downloads:0

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