Adaptation to different mouth shapes influences visual perception of ambiguous lip speech

Benedict C. Jones, David R. Feinberg, Patricia E.G. Bestelmeyer, Lisa M. DeBruine, Anthony C. Little

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We investigated the effects of adaptation to mouth shapes associated with different spoken sounds (sustained /m/ or /u/) on visual perception of lip speech. Participants were significantly more likely to label ambiguous faces on an /m/-to-/u/ continuum as saying /u/ following adaptation to /m/ mouth shapes than they were in a preadaptation test. By contrast, participants were significantly less likely to label the ambiguous faces as saying /u/ following adaptation to /u/ mouth shapes than they were in a preadaptation test. The magnitude of these aftereffects was equivalent when the same individual was shown in the adaptation and test phases of the experiment and when different individuals were presented in the adaptation and test phases. These findings present novel evidence that adaptation to natural variations in facial appearance influences face perception, and they extend previous research on face aftereffects to visual perception of lip speech.

Original languageEnglish
Pages (from-to)522-528
Number of pages7
JournalPsychonomic Bulletin and Review
Volume17
Issue number4
DOIs
Publication statusPublished - 6 Oct 2010

Keywords

  • mouth shapes
  • visual perception

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