Variations in early and late event-related components of the auditory evoked potential with task difficulty

摘要: A variation in the difficulty of an auditory discrimination was used to investigate relationship between event-related P165, N2 and P3 components evoked potential. Equivalent increases latencies all 3 were found with increased task difficulty. The P165 component, however, could be differentiated from two later since it amplitude demands while amplitudes remained constant. It is suggested that comprise a functional sequence processing rare events possibly involved subject's preparations for future.