Subclinical high schizotypy traits are associated with slower change detection

Laycock, R, Cutajar, E and Crewther, S 2019, 'Subclinical high schizotypy traits are associated with slower change detection', Acta Psychologica, vol. 195, pp. 80-86.


Document type: Journal Article
Collection: Journal Articles

Title Subclinical high schizotypy traits are associated with slower change detection
Author(s) Laycock, R
Cutajar, E
Crewther, S
Year 2019
Journal name Acta Psychologica
Volume number 195
Start page 80
End page 86
Total pages 7
Publisher Elsevier BV
Abstract Patients with schizophrenia often show impairments in visual information processing that have been linked to abnormal magnocellular or dorsal stream functioning. However, such deficits are not consistently reported, possibly due to the broad symptomology inherent to schizophrenia, and/or medication effects. To avoid these latter issues this study employed visual perceptual tasks targeting magnocellular (flicker-defined form contrast threshold), dorsal stream (motion coherence, change detection) and ventral stream (form coherence) processing, and compared performance of groups of high and low sub-clinical schizotypy traits from a neurotypical population (n = 20 per group). Significantly worse performance of high compared with low schizotypy participants was only demonstrated on the change detection task that requires rapid attention acquisition and encoding of the first visual array into short term memory prior to a comparison of a second array presentation. No group differences on the other tasks were established. Given this potentially important effect is apparent in a non-clinical population, there are likely to be implications for understanding visual and attentional abnormalities in the schizophrenia spectrum more broadly.
Subject Sensory Systems
Biological Psychology (Neuropsychology, Psychopharmacology, Physiological Psychology)
Sensory Processes, Perception and Performance
Keyword(s) Schizotypy
Schizophrenia
Magnocellular
Dorsal stream
Attention
Visual processing
DOI - identifier 10.1016/j.actpsy.2019.03.005
Copyright notice © 2019 Elsevier B.V
ISSN 0001-6918
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