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Visually induced activity in human frontal motor areas during simple visuomotor performance.

Thut, G. et al. (2000) Visually induced activity in human frontal motor areas during simple visuomotor performance. NeuroReport (11). pp. 2843-2848. ISSN 0959-4965

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Abstract

Visuomotor tasks elicit neuronal activity in primate motor areas at relatively short latencies. Although this early activity embodies features of visual responses (short latency, stimulus-dependency), its sensory nature has been questioned. We investigated neural correlates of visuomotor performance in human motor areas using scalp and intracranial event-related potential measures. A simple visuomanual reaction-time task evoked early potentials at 133-145 ms post-stimulus which occurred much earlier than the motor potentials of the same region. The amplitude of the early potentials covaried with stimulus location and was independent of parameters of the motor response. Because of their timing, stimulus-dependency and characteristics of our behavioral task, the early potentials are suggested to reflect neuronal responses of sensory nature rather than processing related to pure motor aspects of the task.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Thut, Prof Gregor
Authors: Thut, G., Hauert, C.A., Blanke, O., Morand, S., Seeck, M., Gonzalez, S.L., Grave de Peralta, R., Spinelli, L., Khateb, A., Landis, T., and Michel, C.M.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology > Cognitive Neuroimaging and Neuroengineering Technologies
College of Science and Engineering > School of Psychology
Journal Name:NeuroReport
Publisher:Lippincott Williams & Wilkins
ISSN:0959-4965
ISSN (Online):1473-558X

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