14-Cognitive evoked potentials

Of particular interest in the cognitive neurophysiology are cognitive, or the event-related potentials (ERPs): Contingent Negative Variation (CNV), wave P300 or P3, Mismatch Negativity (MMN) and Bereitschaftspotential (BP) which are identified as slow cognitive potentials. P3 is elicited in the process of decision making; it is considered to be an endogenous potential ( Sutton et al., 1965 ). CNV is a negative voltage change occurring between paired stimuli, when the first stimulus is a warning and the second stimulus requires a motor response or a decision ( Walter et al., 1964 ). BP precedes self-paced voluntary movement in humans ( Kornhuber and Deecke, 1965 ). An infrequent change in an otherwise repetitive acoustic stimulus leads to the genesis of MMN ( Naatanen et al., 1978 ). The author provides the overview about the cognitive evoked potentials.