Hearing the speed of the moving dots: visual motion biases the perception of non-spatial auditory tempo
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1
Munich University, Germany
The coupling between sensory and motor processes has been established in various scenarios. The perception of auditory rhythm, for example, entails crucially an audio-motor representation of the sounds which is associated with activities in premotor cortex. Similarly, visual action patterns are also represented in the premotor cortex through visuo-motor transformation. In this study we tested the hypothesis that the visual motor information, such as embedded in a coherent motion flow, can interact with the motor-related property in auditory rhythm: the tempo. In two experiments, we employed an auditory tempo judgement task where participants listened to a standard auditory sequence while concurrently watching visual stimuli of different motion information, after which they judged the tempo of a comparison sequence related to the standard. In Experiment 1, we found that the same auditory tempo was perceived as faster when it was accompanied by accelerating visual motion than by non-motion luminance change. In Experiment 2, we compared the perceived auditory tempo amongst three visual motion conditions: increase in speed, decrease in speed, and no speed change, and found the corresponding bias in auditory tempo: faster than it was, slower than it was, and the same. The results demonstrated that between a visual spatial and an auditory temporal stimulation, the embedded motor representations from each can interact across modalities, leading to a spatial-to-temporal bias. This suggests that the perceptual process in one modality can incorporate concurrent motor information from cross-modal sensory inputs to form a coherent experience. Funding: Supported by Bayerische Forschungsstiftung, Andrea von Braun Stiftung.
Keywords:
Information Processing,
perceptual process
Conference:
XI International Conference on Cognitive Neuroscience (ICON XI), Palma, Mallorca, Spain, 25 Sep - 29 Sep, 2011.
Presentation Type:
Poster Presentation
Topic:
Poster Sessions: Motor Information Processing
Citation:
Su
Y,
Jonikaitis
D and
Pöppel
E
(2011). Hearing the speed of the moving dots: visual motion biases the perception of non-spatial auditory tempo.
Conference Abstract:
XI International Conference on Cognitive Neuroscience (ICON XI).
doi: 10.3389/conf.fnhum.2011.207.00091
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Received:
16 Nov 2011;
Published Online:
25 Nov 2011.
*
Correspondence:
Dr. Yi-Huang Su, Munich University, Munich, Germany, jasmine.su@med.uni-muenchen.de