Left Global Hemineglect in High Autism-Spectrum Quotient Individuals

Autism remains as a significant issue for many individuals due to the social impairment accompanying the disorder. Recent theories present potential relationships between autistic tendency and visual perceptual differences to explore differences in underlying visual pathways. These differences have...

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Main Author: Daniel Paul Crewther
Format: Article
Language:English
Published: SAGE Publishing 2011-05-01
Series:i-Perception
Online Access:https://doi.org/10.1068/ic289
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spelling doaj-53ef88b9c9e147d794f49c7e818e63c52020-11-25T02:57:35ZengSAGE Publishingi-Perception2041-66952011-05-01210.1068/ic28910.1068_ic289Left Global Hemineglect in High Autism-Spectrum Quotient IndividualsDaniel Paul Crewther0Department of Life and Social Science, Swinburne University of TechnologyAutism remains as a significant issue for many individuals due to the social impairment accompanying the disorder. Recent theories present potential relationships between autistic tendency and visual perceptual differences to explore differences in underlying visual pathways. These differences have been explored though the use of global and local stimuli to show difference in perception. This study compared the balance of global versus local perception between sub-groups from the normal population both high and low on the Autism Spectrum Quotient (AQ). A diamond illusion task containing rivaling global and local percepts was used to explore the effects of changing the occluder contrast and peripheral viewing upon global/local percept. An increase in global perception relative to increasing eccentricity of the stimulus from a fixation point was also seen in both groups. However, with increasing contrast of the occluding stripes both groups showed an increase in the percentage of global perception. When comparing between groups the high AQ showed a significant reduction in global perception compared to the low AQ group when the stimulus was presented in left hemifield. This difference wasn't present within right hemifield. We discuss how global perceptual hemineglect may suggest abnormal parietal function in individuals with high AQ.https://doi.org/10.1068/ic289
collection DOAJ
language English
format Article
sources DOAJ
author Daniel Paul Crewther
spellingShingle Daniel Paul Crewther
Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
i-Perception
author_facet Daniel Paul Crewther
author_sort Daniel Paul Crewther
title Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
title_short Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
title_full Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
title_fullStr Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
title_full_unstemmed Left Global Hemineglect in High Autism-Spectrum Quotient Individuals
title_sort left global hemineglect in high autism-spectrum quotient individuals
publisher SAGE Publishing
series i-Perception
issn 2041-6695
publishDate 2011-05-01
description Autism remains as a significant issue for many individuals due to the social impairment accompanying the disorder. Recent theories present potential relationships between autistic tendency and visual perceptual differences to explore differences in underlying visual pathways. These differences have been explored though the use of global and local stimuli to show difference in perception. This study compared the balance of global versus local perception between sub-groups from the normal population both high and low on the Autism Spectrum Quotient (AQ). A diamond illusion task containing rivaling global and local percepts was used to explore the effects of changing the occluder contrast and peripheral viewing upon global/local percept. An increase in global perception relative to increasing eccentricity of the stimulus from a fixation point was also seen in both groups. However, with increasing contrast of the occluding stripes both groups showed an increase in the percentage of global perception. When comparing between groups the high AQ showed a significant reduction in global perception compared to the low AQ group when the stimulus was presented in left hemifield. This difference wasn't present within right hemifield. We discuss how global perceptual hemineglect may suggest abnormal parietal function in individuals with high AQ.
url https://doi.org/10.1068/ic289
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