| Temporal profile of the directional tuning of the discharge of dorsal premotor cortical cells. | |
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MedLine Citation:
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PMID: 9601655 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined the directional modulation of dorsal premotor (PMd) cells as a function of time in an instructed delay, reaching task that systematically varied direction and accuracy constraints. In two monkeys, the activity of 150 PMd cells was recorded and the preferred direction (PD) of the firing as a function of time, the PD trajectory, was calculated. Forty-one cells had nearly continuous significant directional tuning of at least 1 s duration (mean duration 1694 +/- 754 ms) that began in the instructed delay period and continued into the movement period. The PD gradually changed in time (mean change of 47.7 +/- 40.8 degrees), a change best described as a rotation. The change in the directional tuning as a function of time is consistent with the hypothesis that the PMd plays a role in the non-standard mapping of sensory stimuli into motor commands. |
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Authors:
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C R Mason; M T Johnson; Q G Fu; J E Gomez; T J Ebner |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Neuroreport Volume: 9 ISSN: 0959-4965 ISO Abbreviation: Neuroreport Publication Date: 1998 Apr |
Date Detail:
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Created Date: 1998-08-13 Completed Date: 1998-08-13 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 9100935 Medline TA: Neuroreport Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 989-95 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, University of Minnesota, Minneapolis 55455, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Electromyography Evoked Potentials, Motor / physiology* Female Macaca mulatta Motor Cortex / cytology, physiology* Movement / physiology* Reaction Time / physiology* Reproducibility of Results |
| Grant Support | |
ID/Acronym/Agency:
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NS31530/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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