| Current source density analysis of CNV during temporal gap paradigm. | |
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MedLine Citation:
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PMID: 11302395 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present report studied the contingent negative variation during Gap and Non-Gap conditions using visual stimulation and manual responses. The reaction times during the Gap condition were facilitated compared with those of the Non-Gap condition. The contingent negative variation component was obtained during the preparatory period from electrodes placed at 58 scalp sites for both Gap and Non-Gap conditions. The comparison between both conditions: Gap and non-gap did not show statistically significant differences during the preparatory period. The topography of the voltage and current source density maps showed three different foci: (i) an early negativity centred in electrodes overlying the supplementary motor area and cingulate motor areas, (ii) an activation over the primary motor cortex contralateral to the finger movement, and (iii) a bilateral activation on posterior sites. All these results suggest that the facilitation induced by the warning stimuli occurs in neural circuits that would be recruited for the subsequent processing of the imperative stimulus. The facilitation of the reaction times during the gap condition with respect to non-gap condition must be justified by neural events occurring during the gap period. |
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Authors:
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C M Gómez; A Delinte; E Vaquero; M J Cardoso; M Vázquez; M Crommelinck; A Roucoux |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Brain topography Volume: 13 ISSN: 0896-0267 ISO Abbreviation: Brain Topogr Publication Date: 2001 |
Date Detail:
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Created Date: 2001-04-13 Completed Date: 2001-08-02 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8903034 Medline TA: Brain Topogr Country: United States |
Other Details:
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Languages: eng Pagination: 149-59 Citation Subset: IM |
Affiliation:
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Lab. Psicobiología. Dpto. Psicología Experimental, Universidad de Sevilla, Spain. cgomez@cica.es |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Algorithms Brain Mapping Contingent Negative Variation / physiology* Electroencephalography Electrooculography Evoked Potentials / physiology Female Humans Male Reaction Time / physiology Temporal Lobe / physiology* |
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