Skip to Main content Skip to Navigation
Journal articles

Electrophysiological evidence for a self-processing advantage during audiovisual speech integration

Avril Treille 1 Coriandre Vilain 2 Sonia Kandel 3 Marc Sato 4
2 GIPSA-Services [2016-2019] - GIPSA-Services
GIPSA-lab [2016-2019] - Grenoble Images Parole Signal Automatique [2016-2019]
3 GIPSA-VSLD [2016-2019] - GIPSA - Voix Systèmes Linguistiques et Dialectologie
GIPSA-DPC [2016-2019] - Département Parole et Cognition
Abstract : Previous electrophysiological studies have provided strong evidence for early multisensory integrative mechanisms during audiovisual speech perception. From these studies, one unanswered issue is whether hearing our own voice and seeing our own articulatory gestures facilitate speech perception, possibly through a better processing and integration of sensory inputs with our own sensory-motor knowledge. The present EEG study examined the impact of self-knowledge during the perception of auditory (A), visual (V) and audiovisual (AV) speech stimuli that were previously recorded from the participant or from a speaker he/she had never met. Audiovisual interactions were estimated by comparing N1 and P2 auditory evoked potentials during the bimodal condition (AV) with the sum of those observed in the unimodal conditions (A + V). In line with previous EEG studies, our results revealed an amplitude decrease of P2 auditory evoked potentials in AV compared to A + V conditions. Crucially, a temporal facilitation of N1 responses was observed during the visual perception of self speech movements compared to those of another speaker. This facilitation was negatively correlated with the saliency of visual stimuli. These results provide evidence for a temporal facilitation of the integration of auditory and visual speech signals when the visual situation involves our own speech gestures.
Document type :
Journal articles
Complete list of metadatas

Cited literature [48 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01616078
Contributor : Avril Treille <>
Submitted on : Tuesday, November 21, 2017 - 3:42:47 PM
Last modification on : Saturday, August 1, 2020 - 6:44:43 AM

File

EXBR-D-17-00084_R2.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Avril Treille, Coriandre Vilain, Sonia Kandel, Marc Sato. Electrophysiological evidence for a self-processing advantage during audiovisual speech integration. Experimental Brain Research, Springer Verlag, 2017, 235 (9), pp.2867-2876. ⟨10.1007/s00221-017-5018-0⟩. ⟨hal-01616078⟩

Share

Metrics

Record views

703

Files downloads

463