Visually induced activity in human frontal motor areas during simple visuomotor performance
| Autor: | Sara L. Gonzalez, Theodor Landis, Laurent Spinelli, M. Seeck, Gregor Thut, Christoph M. Michel, Claude-Alain Hauert, Olaf Blanke, Stéphanie Morand, Asaid Khateb, R. Grave de Peralta |
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| Rok vydání: | 2000 |
| Předmět: |
Adult
Male genetic structures Sensory system Neuropsychological Tests Stimulus (physiology) Reaction Time medicine Humans Premovement neuronal activity Visual Pathways Evoked Potentials Brain Mapping Neural correlates of consciousness Epilepsy Scalp General Neuroscience Motor Cortex Cognition Electrophysiology medicine.anatomical_structure Visual Perception Female Psychology Neuroscience Psychomotor Performance Motor cortex |
| Zdroj: | NeuroReport. 11:2843-2848 |
| ISSN: | 0959-4965 |
| DOI: | 10.1097/00001756-200009110-00004 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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