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Abstract:
After exposure to asynchronous sound and light stimuli, perceived audio-visual synchrony changes to compensate for the
asynchrony. Here we investigate to what extent this audio-visual recalibration effect transfers to visual-tactile and audiotactile
simultaneity perception in order to infer the mechanisms responsible for temporal recalibration. Results indicate that
audio-visual recalibration of simultaneity can transfer to audio-tactile and visual-tactile stimuli depending on the way in
which the multisensory stimuli are presented. With presentation of co-located multisensory stimuli, we found a change in
the perceptual latency of the visual stimuli. Presenting auditory stimuli through headphones, on the other hand, induced a
change in the perceptual latency of the auditory stimuli. We argue that the difference in transfer depends on the relative
trust in the auditory and visual estimates. Interestingly, these findings were confirmed by showing that audio-visual
recalibration influences simple reaction time to visual and auditory stimuli. Presenting co-located stimuli during
asynchronous exposure induced a change in reaction time to visual stimuli, while with headphones the change in reaction
time occurred for the auditory stimuli. These results indicate that the perceptual latency is altered with repeated exposure
to asynchronous audio-visual stimuli in order to compensate (at least in part) for the presented asynchrony.
