Uncertainty and attention in audiovisual speech perception
نویسنده
چکیده
This study deals with uncertainty and attention in audiovisual speech perception. Subjects were exposed to audiovisual stimuli where independent variable was bivalent: either blocked to one ear or uncertainty about in which ear the next stimulus would appear. The hypothesis, that uncertainty would inhibit audiovisual integration was motivated by an earlier study (Öhrström et al, 2011) but these results were not confirmed in this experiment. However, audiovisual stimuli presented in the final parts of the session evoked less visual influence than those in the first parts. This negative correlation may have two explanations (1) Fatigue in the end of the session means less available attentional resources, which inhibits integration. (2) Integration involves a late integration process where basically auditory information is stored throughout the session. This may haves implications for studies in audiovisual speech perception.
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