Document Detail


Transcranial magnetic stimulation of posterior parietal cortex affects decisions of hand choice.
MedLine Citation:
PMID:  20876098     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Deciding which hand to use for an action is one of the most frequent decisions people make in everyday behavior. Using a speeded reaching task, we provide evidence that hand choice entails a competitive decision process between simultaneously activated action plans for each hand. We then show that single-pulse transcranial magnetic stimulation to the left posterior parietal cortex biases this competitive process, leading to an increase in ipsilateral, left hand reaches. Stimulation of the right posterior parietal cortex did not alter hand choice, suggesting a hemispheric asymmetry in the representations of reach plans. These results are unique in providing causal evidence that the posterior parietal cortex is involved in decisions of hand choice.
Authors:
Flavio T P Oliveira; Jörn Diedrichsen; Timothy Verstynen; Julie Duque; Richard B Ivry
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-09-27
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  107     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-13     Completed Date:  2010-11-22     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  17751-6     Citation Subset:  IM    
Affiliation:
Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA. oflavio@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Choice Behavior / physiology
Female
Functional Laterality / physiology*
Hand / physiology*
Humans
Parietal Lobe / physiology*
Psychomotor Performance / physiology*
Transcranial Magnetic Stimulation*
Grant Support
ID/Acronym/Agency:
P01 NS040813/NS/NINDS NIH HHS; //Canadian Institutes of Health Research
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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