Neuropsychological Origins of the Visual P300 Event-related Potential

The aim of this study was to examine the possible brain regions responsible for the visual P300 brain wave. The P300 waveform has been linked to several cognitive processes including attention, memory and event categorization. In order to investigate the possible brain regions of the visual P300, this study utilized the non-invasive source localization software sLORETA (Standardized Low Resolution Electromagnetic Tomograph), coupled with a variant of the classical odd-ball Event-related Potential (ERP) detection paradigm (Comerchero & Polich, 1999). The study was carried out in five neurologically healthy adults and found several distinct regions of brain activation related to sensory and cognitive processing