Title: Altered depth perception is associated with presence of schizotypal personality traits
year: 2012
Journal: Cogn Neuropsychiatry
Volume: 17
Issue: 2
Pages: 115-32
Epubdate: 05/07/2011
Alternate Journal: Cognitive neuropsychiatry
ISSN: 1354-6805
DOI: 10.1080/13546805.2011.576864
Accession Number: 21722047
Abstract: INTRODUCTION: Impaired depth perception, a fundamental aspect of early visual processing, has been shown in patients with schizophrenia suggesting a disturbance to magnocellular and possibly parvocellular pathways. Despite some evidence showing visual-perceptive deficits in people with schizotypal personality traits (SPT), depth perception has not been evaluated in these subjects. METHODS: 12 clinically healthy schizotypy and 17 control participants were examined using a novel stereoscopic depth perception task. A mixed ANOVA design considered the Group (SPT/control) as independent factor, and trial Block (BD/BD+/BD-) and target Condition (SDSS/SDDS/DDSS/DDDS) were considered as repeated measures. RESULTS: Schizotypal participants were not significantly different to controls on simple judgements of depth but demonstrated a subtle impairment in perceiving binocular depth when performing high difficulty judgements. CONCLUSIONS: The presence of subtle depth perception problems in schizotypal subjects, similar but less marked than those of schizophrenia patients, may suggest a less pervasive disturbance of early information processing. If so, such deficits could be considered as innate neurological changes that may occur in people vulnerable for schizophrenia, thus with the potential to be a novel intermediate phenotype.
URI: https://open-access.imh.com.sg/handle/123456789/4601
Authors Address: Department of Psychology
Sapienza-University of Rome
Italy. barbatomariapaola@gmail.com
Database Provider: NLM
language: eng
Appears in Collections:2012

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