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Selective adaptation and recalibration of auditory speech by lipread information: Dissipation

par Vroomen, Jean;van Linden, Sabine;Keetels, Mirjam;De Gelder, Béatrice ;Bertelson, Paul
Référence Speech communication, 44, 1-4 SPEC. ISS., page (55-61)
Publication Publié, 2004-10

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Résumé :

Recently, we have shown that lipread speech can recalibrate auditory speech identification when there is a conflict between the auditory and visual information (Bertelson, P., Vroomen, J., De Gelder, B, 2003. Visual recalibration of auditory speech identification: a McGurk aftereffect. Psychol. Sci. 14 (2003) 592-597). When an ambiguous sound intermediate between /aba/ and /ada/ was dubbed onto a face articulating /aba/ (or /ada/), the proportion of responses consistent with the visual stimulus increased in subsequent unimodal auditory sound identification trials, revealing recalibration. In contrast, when an unambiguous /aba/ or /ada/ sound was dubbed onto the face (with no conflict between vision and audition), the proportion of responses decreased, revealing selective adaptation. In the present study we show that recalibration and selective adaptation not only differ in the direction of their aftereffects, but also that they dissipate at different rates, confirming that the effects are caused by different mechanisms. © 2004 Elsevier B.V. All rights reserved.