On the locus of talker-specificity effects in spoken word recognition: an ERP study with dichotic priming

Sophie Dufour (1) , Dierdre Bolger (1) , Stéphanie Massol (2) , Phillip J. Holcomb (3) , Jonathan Grainger (4)

1 LPL - Laboratoire Parole et Langage
2 Universitat Jaume I = Jaume I University
3 SDSU - San Diego State University
4 LPC - Laboratoire de psychologie cognitive

We used event-related potentials to examine the precise moment at which talker-specific information comes into play during spoken word recognition. Dichotic repetition priming was examined with primes presented in the left unattended ear and targets presented in the right attended ear, and we manipulated both word frequency and talker identity. A clear repetition priming effect was observed in an early time-window spanning 100–200 ms post-target onset, and the effect continued after target word offset in a time-window between 650 and 800 ms. Crucially, we observed that talker change caused a diminution in repetition priming only in the N400 time-window, and only for low frequency words but not for high frequency words. Together, our findings suggest that spoken word recognition relies primarily on abstract representations, and that talker-specific information mainly affects later stages of this process, namely lexical selection.

Mots clés: spoken word recognition; abstract representations; talker-specificity effects; dichotic priming; ERPs

Domaines: Psychologie

Sophie Dufour, Dierdre Bolger, Stéphanie Massol, Phillip J. Holcomb, Jonathan Grainger. On the locus of talker-specificity effects in spoken word recognition: an ERP study with dichotic priming. Language, Cognition and Neuroscience, 2017, 32 (10), pp.1273-1289. ⟨10.1080/23273798.2017.1335421⟩. ⟨hal-01764693⟩