AVSP 2003 - International Conference on Audio-Visual Speech Processing September 4-7, 2003 St. Jorioz, France

Selective Adaptation and Recalibration of Auditory Speech by Lipread Information: Dissipation

Jean Vroomen (1), Mirjam Keetels (1), Sabine van Linden (1), Béatrice de Gelder (1,2), Paul Bertelson (2,1)

(1) Department of Psychology, Tilburg University, The Netherlands
(2) Laboratoire de Psychologie Expérimental, Université Libre de Bruxelles, Belgium

Recently, we have shown that visual speech can recalibrate auditory speech identification. When an ambiguous sound intermediate between /aba/ and /ada/ was dubbed onto a face articulating /aba/ (or /ada/), then the proportion of /aba/ responses increased in subsequent unimodal auditory sound identification trials. In contrast, when an unambiguous /aba/ sound was dubbed onto the face articulating /aba/, then the proportion of /aba/ responses decreased, revealing selective adaptation. Here we show that recalibration and selective adaptation not only differ in the direction of their after-effects, but also that they dissipate at a different rates, confirming that the effects are caused by different brain mechanisms.

Full Paper

Bibliographic reference.  Vroomen, Jean / Keetels, Mirjam / Linden, Sabine van / Gelder, Béatrice de / Bertelson, Paul (2003): "Selective adaptation and recalibration of auditory speech by lipread information: Dissipation", In AVSP 2003, 67-70.