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  The role of signals’ correlation in multisensory integration

Parise, C. (2011). The role of signals’ correlation in multisensory integration. Talk presented at Kyoto University. Kyoto, Japan. 2011-10-24.

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Parise, CV1, 2, Autor           
Affiliations:
1Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497806              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Zusammenfassung: The physical properties of the distal stimuli activating our senses are often correlated in nature; it would therefore be advantageous to exploit such correlations to better process sensory information. Stimulus correlations can be contingent and readily available to the sensory systems (like the temporal correlation between mouth movements and vocal sounds in speech), or can be the results of the statistical co-occurrence of certain stimulus properties that can be learnt over time (like the relation between the frequency of acoustic resonance and the
size of the resonator). Over the last century, a large body of research on multisensory processing has demonstrated the
existence of compatibility effects between individual features of stimuli presented in different sensory modalities. Such compatibility effects, termed crossmodal correspondences, possibly reflect the internalization of the natural correlation between stimulus properties. During this talk, I will assesses the effects of crossmodal correspondences on multisensory processing and report experiments demonstrating that crossmodal correspondences influence the processing rate of sensory information, distort perceptual experiences and lead to stronger multisensory integration. Moreover, a final experiment will be described investigating the effects of contingent signal correlation on multisensory processing, the results of which demonstrate the key role that temporal correlation plays in inferring whether or not two signals have a common physical cause (i.e., the correspondence problem). A Bayesian framework is proposed to interpret the present results whereby stimulus correlations, represented on the prior distribution of expected crossmodal co-occurrence, operates as cues to solve the correspondence problem.

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 Datum: 2011-10-24
 Publikationsstatus: Online veröffentlicht
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 Identifikatoren: BibTex Citekey: Parise2011
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Titel: Kyoto University
Veranstaltungsort: Kyoto, Japan
Start-/Enddatum: 2011-10-24
Eingeladen: Ja

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