The use of advance information for motor preparation in Parkinson's disease: effects of cueing and compatibility between warning and imperative stimuli.
Identifieur interne : 001F33 ( Ncbi/Checkpoint ); précédent : 001F32; suivant : 001F34The use of advance information for motor preparation in Parkinson's disease: effects of cueing and compatibility between warning and imperative stimuli.
Auteurs : L. Gueye [France] ; F. Viallet ; E. Legallet ; E. TroucheSource :
- Brain and cognition [ 0278-2626 ] ; 1998.
English descriptors
- KwdEn :
- MESH :
- complications : Parkinson Disease.
- diagnosis : Cognition Disorders, Psychomotor Disorders.
- etiology : Cognition Disorders, Movement Disorders, Psychomotor Disorders.
- physiology : Attention.
- Aged, Female, Humans, Male, Middle Aged, Reaction Time, Time Factors.
Abstract
The ability of 13 Parkinsonian patients and 11 age-matched control subjects to process and use two components of the information given prior to a voluntary movement was studied using reaction time (RT) tasks. This advance information about the direction of a pointing movement was given using a double stimulation paradigm with an auditory warning signal (WS) which occurred prior to a visual imperative signal (IS). The first component of the information was given by the WS at the beginning of each trial, and the second component was the WS-IS compatibility during series of trials. The subjects were tested with three RT paradigms: a cued simple (CS) task, a cued choice (NC) task, and a priming choice (P) task. The results show that the normal subjects used both the lateral cue and the WS-IS compatibility to shorten their RTs, whereas the Parkinsonian patients were able to use the lateral warning signal, but their ability to use the degree of compatibility stimuli was impaired. These data suggest that when dealing with lateral cues in a RT task, Parkinsonian patients have no difficulty in identifying a stimulus and selecting the appropriate response, but that this is no longer so in the case of stimulus compatibility. This impairment may be due to attentional disorders involving a dysfunction affecting the medial premotor system, which includes the basal ganglia and may be responsible for the feedforward movement control deficits associated with Parkinson's disease.
DOI: 10.1006/brcg.1998.1019
PubMed: 9735179
Affiliations:
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pubmed:9735179Le document en format XML
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<series><title level="j">Brain and cognition</title>
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<term>Humans</term>
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<term>Middle Aged</term>
<term>Movement Disorders (etiology)</term>
<term>Parkinson Disease (complications)</term>
<term>Psychomotor Disorders (diagnosis)</term>
<term>Psychomotor Disorders (etiology)</term>
<term>Reaction Time</term>
<term>Time Factors</term>
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<front><div type="abstract" xml:lang="en">The ability of 13 Parkinsonian patients and 11 age-matched control subjects to process and use two components of the information given prior to a voluntary movement was studied using reaction time (RT) tasks. This advance information about the direction of a pointing movement was given using a double stimulation paradigm with an auditory warning signal (WS) which occurred prior to a visual imperative signal (IS). The first component of the information was given by the WS at the beginning of each trial, and the second component was the WS-IS compatibility during series of trials. The subjects were tested with three RT paradigms: a cued simple (CS) task, a cued choice (NC) task, and a priming choice (P) task. The results show that the normal subjects used both the lateral cue and the WS-IS compatibility to shorten their RTs, whereas the Parkinsonian patients were able to use the lateral warning signal, but their ability to use the degree of compatibility stimuli was impaired. These data suggest that when dealing with lateral cues in a RT task, Parkinsonian patients have no difficulty in identifying a stimulus and selecting the appropriate response, but that this is no longer so in the case of stimulus compatibility. This impairment may be due to attentional disorders involving a dysfunction affecting the medial premotor system, which includes the basal ganglia and may be responsible for the feedforward movement control deficits associated with Parkinson's disease.</div>
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