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Does left-handedness confer resistance to spatial bias?

We recently demonstrated that drowsiness, indexed using EEG, was associated with left-inattention in a group of 26 healthy right-handers. This has been linked to alertness-related modulation of spatial bias in left neglect patients and the greater persistence of left, compared with right, neglect fo...

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Autores principales: Bareham, Corinne A., Bekinschtein, Tristan A., Scott, Sophie K., Manly, Tom
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361991/
https://www.ncbi.nlm.nih.gov/pubmed/25781078
http://dx.doi.org/10.1038/srep09162
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author Bareham, Corinne A.
Bekinschtein, Tristan A.
Scott, Sophie K.
Manly, Tom
author_facet Bareham, Corinne A.
Bekinschtein, Tristan A.
Scott, Sophie K.
Manly, Tom
author_sort Bareham, Corinne A.
collection PubMed
description We recently demonstrated that drowsiness, indexed using EEG, was associated with left-inattention in a group of 26 healthy right-handers. This has been linked to alertness-related modulation of spatial bias in left neglect patients and the greater persistence of left, compared with right, neglect following injury. Despite handedness being among the most overt aspects of human lateralization, studies of this healthy analogue of left neglect have only been conducted with predominantly or exclusively right-handed individuals. Here, with a group of 26 healthy non-right-handers we demonstrate that, unlike right-handers who showed a rightward shift in attention with drowsiness, non-right-handers showed the opposite pattern on an auditory spatial localization task. The current results are the first indication that factors linked to handedness can affect the development and extremity of spatial biases, potentially conferring resilience to clinical symptoms in non-right-handers and, given that 90% of us are right-handed, why left neglect is disproportionately persistent.
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spelling pubmed-43619912015-03-19 Does left-handedness confer resistance to spatial bias? Bareham, Corinne A. Bekinschtein, Tristan A. Scott, Sophie K. Manly, Tom Sci Rep Article We recently demonstrated that drowsiness, indexed using EEG, was associated with left-inattention in a group of 26 healthy right-handers. This has been linked to alertness-related modulation of spatial bias in left neglect patients and the greater persistence of left, compared with right, neglect following injury. Despite handedness being among the most overt aspects of human lateralization, studies of this healthy analogue of left neglect have only been conducted with predominantly or exclusively right-handed individuals. Here, with a group of 26 healthy non-right-handers we demonstrate that, unlike right-handers who showed a rightward shift in attention with drowsiness, non-right-handers showed the opposite pattern on an auditory spatial localization task. The current results are the first indication that factors linked to handedness can affect the development and extremity of spatial biases, potentially conferring resilience to clinical symptoms in non-right-handers and, given that 90% of us are right-handed, why left neglect is disproportionately persistent. Nature Publishing Group 2015-03-17 /pmc/articles/PMC4361991/ /pubmed/25781078 http://dx.doi.org/10.1038/srep09162 Text en Copyright © 2015, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Bareham, Corinne A.
Bekinschtein, Tristan A.
Scott, Sophie K.
Manly, Tom
Does left-handedness confer resistance to spatial bias?
title Does left-handedness confer resistance to spatial bias?
title_full Does left-handedness confer resistance to spatial bias?
title_fullStr Does left-handedness confer resistance to spatial bias?
title_full_unstemmed Does left-handedness confer resistance to spatial bias?
title_short Does left-handedness confer resistance to spatial bias?
title_sort does left-handedness confer resistance to spatial bias?
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361991/
https://www.ncbi.nlm.nih.gov/pubmed/25781078
http://dx.doi.org/10.1038/srep09162
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