Document Detail

Cognitive- and movement-related potentials recorded in the human basal ganglia.
MedLine Citation:
PMID:  15666424     Owner:  NLM     Status:  MEDLINE    
Sources of potentials evoked by cognitive processing of sensory and motor activities were studied in 9 epilepsy surgery candidates with electrodes implanted in the basal ganglia (BG), mostly in the putamen. Several contacts were also located in the pallidum and the caudate. The recorded potentials were related to a variety of cognitive and motor activities (attentional, decisional, time estimation, sensory processing, motor preparation, and so on). In five different tests, we recorded P3-like potentials evoked by auditory and visual stimuli and sustained potential shifts in the Bereitschaftspotential and Contingent Negative Variation protocols. All of the studied potentials were generated in the BG. They were recorded from all over the putamen. Various potentials on the same lead or nearby contacts were recorded. A functional topography in the BG was not displayed. We presume that the cognitive processes we studied were produced in clusters of neurons that are organized in the basal ganglia differently than the known functional organization, e.g., of motor functions. The basal ganglia, specifically the striatum, may play an integrative role in cognitive information processing, in motor as well as in nonmotor tasks. This role seems to be nonspecific in terms of stimulus modality and in terms of the cognitive context of the task.
Ivan Rektor; Martin Bares; Milan Brázdil; Petr Kanovský; Irena Rektorová; Daniela Sochurková; Dagmar Kubová; Robert Kuba; Pavel Daniel
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Movement disorders : official journal of the Movement Disorder Society     Volume:  20     ISSN:  0885-3185     ISO Abbreviation:  Mov. Disord.     Publication Date:  2005 May 
Date Detail:
Created Date:  2005-05-05     Completed Date:  2005-09-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8610688     Medline TA:  Mov Disord     Country:  United States    
Other Details:
Languages:  eng     Pagination:  562-8     Citation Subset:  IM    
Copyright Information:
Copyright 2005 Movement Disorder Society.
First Department of Neurology, Masaryk University, St. Anne's Teaching Hospital, Brno, Czech Republic.
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MeSH Terms
Attention / physiology
Basal Ganglia / anatomy & histology*
Caudate Nucleus / anatomy & histology
Cognition / physiology*
Contingent Negative Variation / physiology
Decision Making / physiology
Electrodes, Implanted
Evoked Potentials / physiology*
Evoked Potentials, Auditory / physiology
Evoked Potentials, Visual / physiology
Eye Movements / physiology
Globus Pallidus / anatomy & histology
Hippocampus / anatomy & histology
Magnetic Resonance Imaging*
Movement / physiology*
Psychomotor Performance / physiology
Putamen / anatomy & histology
Sensation / physiology

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

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