title: My voice or yours? An electrophysiological study.
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.
authors.affiliation: UMR INSERM U930, CNRS ERL 3106, Université François-Rabelais de Tours, CHRU de Tours, Tours, France. jerome.graux@univ-tours.fr
authors.forename: Jérôme
authors.initials: J
authors.lastname: Graux
authors.forename: Marie
authors.initials: M
authors.lastname: Gomot
authors.forename: Sylvie
authors.initials: S
authors.lastname: Roux
authors.forename: Frédérique
authors.initials: F
authors.lastname: Bonnet-Brilhault
authors.forename: Vincent
authors.initials: V
authors.lastname: Camus
authors.forename: Nicole
authors.initials: N
authors.lastname: Bruneau
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001931:Brain Mapping; D003265:Contingent Negative Variation / Q000502:physiology*; D004192:Discrimination, Psychological / Q000502:physiology*; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors; D014831:Voice / Q000502:physiology*; D055815:Young Adult