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Effects of audiovisual presentations on visual localization errors: one or several multisensory mechanisms?
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Orientador(es)
Resumo(s)
The present study examines the extent to which temporal and spatial properties of sound modulate visual motion processing in spatial localization tasks. Participants were asked to locate the place at which a moving visual target unexpectedly vanished. Across different tasks, accompanying sounds were factorially varied within subjects as to their onset and offset times and/or positions relative to visual motion. Sound onset had no effect on the localization error. Sound offset was shown to modulate the perceived visual offset location, both for temporal and spatial disparities. This modulation did not conform to attraction toward the timing or location of the sounds but, demonstrably in the case of temporal disparities, to bimodal enhancement instead. Favorable indications to a contextual effect of audiovisual presentations on interspersed visual-only trials were also found. The short sound-leading
offset asynchrony had equivalent benefits to audiovisual offset synchrony, suggestive of the involvement of early-level mechanisms, constrained by a temporal window, at these conditions. Yet, we tentatively hypothesize that the whole of the results and how they compare with previous studies requires the contribution of additional mechanisms, including learning detection of auditory-visual associations and cross-sensory spread of endogenous attention.
Descrição
Palavras-chave
spatial localization tasks auditory cues crossmodal mechanisms audiovisual integration
Contexto Educativo
Citação
Nazaré, C. J., & Oliveira, A. M. (2021). Effects of Audiovisual Presentations on Visual Localization Errors: One or Several Multisensory Mechanisms?. Multisensory Research, 34(6), 587-621. https://doi.org/10.1163/22134808-bja10048
Editora
Brill Academic Publishers