Recalibration of Auditory Speech by Lipread versus Lexical information

Sabine van Linden, Department of Psychonomics, Tilburg University

Abstract
Bertelson, Vroomen & de Gelder,(Psychological Science, 2003) demonstrated that lipread speech can recalibrate auditory speech identification. Exposure to an ambiguous sound intermediate between /aba/ and /ada/ dubbed onto a face articulating /aba/ or /ada/ increased the proportion identification responses consistent with the visual stimulus on subsequent posttests, revealing recalibration. Others have recently reported similar effects using lexical information. Here, we directly compared the magnitude and the dissipation of aftereffects induced by lipread and lexical information, using the same different materials and procedures. This allowed us to check whether there is a fundamental difference between bottom-up perceptual information and top-down lexical knowledge.

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