Congruency effects between auditory and tactile motion: Extending the phenomenon of cross-modal dynamic capture |
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Authors: | Email author" target="_blank">Salvador?Soto-FaracoEmail author Charles?Spence Alan?Kingstone |
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Institution: | (1) Department of Experimental Psychology, University of Oxford, South Parks Road, Oxford, OX1 3UD, UK;(2) Cognitive Neuroscience Group-Parc Cientìfic, Universitat de Barcelona, Spain |
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Abstract: | Behavioral studies of multisensory integration in motion perception have focused on the particular case of visual and auditory
signals. Here, we addressed a new case: audition and touch. In Experiment 1, we tested the effects of an apparent motion stream
presented in an irrelevant modality (audition or touch) on the perception of apparent motion streams in the other modality
(touch or audition, respectively). We found significant congruency effects (lower performance when the direction of motion
in the irrelevant modality was incongruent with the direction of the target) for the two possible modality combinations. This
congruency effect was asymmetrical, with tactile motion distractors having a stronger influence on auditory motion perception
than vice versa. In Experiment 2, we used auditory motion targets and tactile motion distractors while participants adopted
one of two possible postures: arms uncrossed or arms crossed. The effects of tactile motion on auditory motion judgments were
replicated in the arms-uncrossed posture, but they dissipated in the arms-crossed posture. The implications of these results
are discussed in light of current findings regarding the representation of tactile and auditory space. |
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