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Abstract:
We tested whether the tactile perception of sequences of taps delivered on the index fingertip can be modulated by sequences of auditory beeps. In the first experiment, the tactile and auditory sequences were always presented
simultaneously, and were structurally either similar or dissimilar. In the second experiment, the auditory and tactile sequences were always structurally similar but
not always presented simultaneously. When structurally similar and presented simultaneously, the auditory sequences significantly modulated tactile taps perception. This automatic combination of “redundant-like” tactile and auditory signals likely constitutes an optimization process taking advantage of multimodal redundancy for perceptual estimates.
