| Mental rotation of the neuronal population vector. | |
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MedLine Citation:
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PMID: 2911737 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A rhesus monkey was trained to move its arm in a direction that was perpendicular to and counterclockwise from the direction of a target light that changed in position from trial to trial. Solution of this problem was hypothesized to involve the creation and mental rotation of an imagined movement vector from the direction of the light to the direction of the movement. This hypothesis was tested directly by recording the activity of cells in the motor cortex during performance of the task and computing the neuronal population vector in successive time intervals during the reaction time. The population vector rotated gradually counterclockwise from the direction of the light to the direction of the movement at an average rate of 732 degrees per second. These results provide direct, neural evidence for the mental rotation hypothesis and indicate that the neuronal population vector is a useful tool for "reading out" and identifying cognitive operations of neuronal ensembles. |
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Authors:
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A P Georgopoulos; J T Lurito; M Petrides; A B Schwartz; J T Massey |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 243 ISSN: 0036-8075 ISO Abbreviation: Science Publication Date: 1989 Jan |
Date Detail:
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Created Date: 1989-02-16 Completed Date: 1989-02-16 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 234-6 Citation Subset: IM |
Affiliation:
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Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cognition* Macaca mulatta Models, Neurological Models, Psychological Motor Activity* Motor Cortex / physiology* Movement* Neurons / physiology* Photic Stimulation Rotation |
| Grant Support | |
ID/Acronym/Agency:
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NS17413/NS/NINDS NIH HHS; NS20868/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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