A method for cognitive function assessment in a patient uses the ERP waveform features and parameters that maximize the correlation between the E RP components and behavioral performance on a neuropsychological test of langua ge comprehension (PPVT-R). The method provides an electrophysiological diagnost ic technique that can be used in the assessment of aphasic patients. ERPs are recorded during a computerized version of the Peabody Picture Vocabulary Test-Revised (PPVT-R, Form M). In the computerized version, a picture is presented followed by a congruent or incongruent spoken word. A derived measure is calculated from the ERP differentiation between congruent and incongruent words. The N400 is the primary component elicited to incongruent spoken words.
LINKING NEUROPHYSIOLOGICAL AND NEUROPSYCHOLOGICAL MEASURES FOR COGNITIVE FUNCTION ASSESSMENT