Sistema para el Registro y Procesamiento en Línea del EEG Sincronizando la Presentación de Estímulos con las Variaciones de los Niveles de Energía

摘要

The Electroencephalogram (EEG) can be de-scribed as a base electrical activity (stationary) characterized by the existence of rhythms of similar shape and duration appearing regularly in a recurrent way. These rhythms can be affected by the processing of a given cognitive task. The rela-tion between the cognitive processes and the brain rhythms is still a research field but there are some reported works that are already linking the theta band to memory tasks. In this work we present a system for the simultaneous re-cording and processing of EEG in order to present stimulus (mental tak) synchronized with the changes in energy of specif-ic frequency bands. This system allows for the evaluation of subject performance on an specific cognitive task linked to brain rhythms.