IMPLEMENTATION, COLLECTION, AND PROCESSING OF VISUAL EVOKED RESPONSES (CPVER) FOR COGNITIVE STUDIES

Single Visual Evoked Responses (SVERs) elicited from human subjects can be used to study sensory and perceptual processes. The philosophy behind the design and implementation of a computer laboratory facility to collect and process visual evoked responses (unaveraged or single EEG records) is described and expounded. The resulting system has been used to collect and process Evoked Potentials (EPs) for a series of cognitive experiments. The "offline" data processing subsystem has been used to process the SVERs with classification error rates as low as 0% (perfect) for both design and test sets. Operator guides for the software and hardware procedures are described in the appendices.