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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 |
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Research Division: | Psychology |
Research Group: | Cognitive and computational psychology |
Research Field: | Sensory processes, perception and performance |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in psychology |
UTAS Author: | Slaghuis, WL (Dr Walter Slaghuis) |
UTAS Author: | Curran, CE (Mr Charles Edward Curran) |
ID Code: | 17376 |
Year Published: | 1999 |
Web of Science® Times Cited: | 49 |
Deposited By: | Psychology |
Deposited On: | 1999-08-01 |
Last Modified: | 2000-05-13 |
Downloads: | 0 |
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