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handle: 2445/98884 , 11441/73323
Se presentan y defienden las técnicas de registro de la actividad eléctrica cerebral con electrodos de superficie como una alternativa válida para el estudio fisiológico de la función cognitiva del cerebro humano. Asimismo, se describen las técnicas de representación topográfica de potencial neuroeléctrico, así como las de análisis de densidad de corriente y de localización de generadores cerebrales de potenciales evocados. Se concluye que es posible determinar la localización de zonas corticales activas durante procesos de percepción, motores y cognitivos, partiendo de un número limitado de hipótesis fisiológicas, en relación al comportamiento eléctrico de las neuronas corticales y según un modelo eléctrico de la cabeza.
Recording techniques of electrical cerebral activity with surface electrodes are shown and supported as a valid choice of a physiological study of the cognitive function of the human brain. Likewise, we describe the techniques of topographical representation of neuroelectrical potentials, as well as the current source density analysis and the localization of cerebral generators by evoked potentials. We conclude that it is possible to determine the localization of active cortical zones during perception, motor and cognitive processes, starting from a limited number of physiological hypotheses, in relation to the electrical behaviour of the cortical neurons and according to an electrical model of the head.
DGICYT TM90-152
Localization of brain generators, Potenciales evocados, Cognitive psychology, Mapas de voltaje, Voltage maps, Neurociència cognitiva, Cognitive neuroscience, Análisis de densidad de corriente, Current Source Density Analysis (CSD), Psicologia cognitiva, Localización de generadores cerebrales, Event-related potentials
Localization of brain generators, Potenciales evocados, Cognitive psychology, Mapas de voltaje, Voltage maps, Neurociència cognitiva, Cognitive neuroscience, Análisis de densidad de corriente, Current Source Density Analysis (CSD), Psicologia cognitiva, Localización de generadores cerebrales, Event-related potentials
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