Schizotypal personality traits influence idiosyncratic initiation of saccadic face exploration

Details

Serval ID
serval:BIB_4F2B23B53608
Type
Article: article from journal or magazin.
Collection
Publications
Title
Schizotypal personality traits influence idiosyncratic initiation of saccadic face exploration
Journal
Vision Research
Author(s)
Leonards U., Mohr C.
ISSN
1878-5646 (Electronic0042-6989)
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
49
Number
19
Pages
2404-2413
Language
english
Notes
Journal Article Research Support, Non-U.S. Gov't
Abstract
Visual face exploration is usually biased to the left half of a presented face. Recent findings now indicate that the first saccade in face exploration has a strong idiosyncratic component with around 30% of healthy individuals showing a consistent rightward bias. We investigated in a random sample of 64 right-handed healthy participants whether this rightward bias might relate to individual differences, i.e. a psychotic-like thinking style (schizotypy). Elevated positive (magical ideation) but not negative (physical anhedonia) schizotypy scores accounted for a pronounced left-face preference for first saccades. Furthermore, when using magical ideation and physical anheonia to group individuals according to their median scale scores into four groups (either both scores elevated or low, or mixed with one score elevated, one low), participants with both scores elevated exhibited the most pronounced left-face preference and participants with both scores low the least. The same participant groups did not differ with respect to their side preference in exploring fractals nor for other exploration parameters such as first fixation duration, number of saccades or scanpath length. These findings indicate pronounced right-hemispheric dominance for face exploration in healthy individuals with elevated positive schizotypal thought. These findings contrast with expectations from studies with schizophrenic patients, and point to the relevance of individual differences in lateralized face processing.
Keywords
Adolescent Adult Eye Movement Measurements *Face Female Fractals Humans Male Middle Aged Pattern Recognition, Visual/*physiology Photic Stimulation/methods Psychometrics Psychophysics Saccades/*physiology Schizotypal Personality Disorder/physiopathology/*psychology Visual Fields/physiology Young Adult
Open Access
Yes
Create date
17/01/2011 20:07
Last modification date
20/08/2019 15:04
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