P1 amplitude across replicates: does measurement method make a difference?

Purpose: Most cortical auditory evoked potentials instruments provide a "default" peak-to-baseline (P-B) amplitude and a means for obtaining a peak-to-trough (P-T) measure. This study investigated the sensitivity of these two measures in assessing the effects of repeated runs on the P1 component of the electrophysiological response.

Methods: Cortical auditory evoked potentials were recorded on 30 normal hearing young adults.