Abstract
This study examined the neural processes underlying own voice discrimination using electrophysiological methods. Event-related potentials were recorded while healthy subjects (n=17) heard passively three oddball sequences composed of recordings of the French vowel/a/pronounced either by the participant her/himself or by two unknown persons. The results indicated that, although the mismatch negativity (MMN) displayed similar peak latency and amplitude in both conditions, the subsequent P3a clearly distinguished the two conditions since its amplitude was significantly smaller for own voice discrimination than for that of unknown voices. Moreover, the own voice discriminative response was associated with an early pre-MMN response. This early response involved a left inferior frontal component, the activity of which lasted throughout the time course of the discriminative response, which included both MMN and P3a.
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