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  Multisensory integration: When correlation implies causation

Parise, C., Harrar V, Spence, C., & Ernst, M. (2011). Multisensory integration: When correlation implies causation. Poster presented at 34th European Conference on Visual Perception, Toulouse, France.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BA82-0 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BA83-E
Genre: Poster

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Parise, CV1, Autor              
Harrar V, Spence, C, Autor
Ernst, MO1, Autor              
Affiliations:
1Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497806              

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Schlagwörter: -
 Zusammenfassung: Humans are equipped with multiple sensory channels, jointly providing both redundant and complementary information. A primary challenge for the brain is therefore to make sense of these multiple sources of information and bind together those signals originating from the same source while segregating them from other inputs. Whether multiple signals have a common origin or not, however, must be inferred from the signals themselves (causal inference, cf “the correspondence problem”). Previous studies have demonstrated that spatial coincidence, temporal simultaneity, and prior knowledge are exploited to solve the correspondence problem. Here we demonstrate that crosscorrelation, a measure of similarity between signals, constitutes an additional cue to solve the correspondence problem. Capitalizing on the well-known fact that sensitivity to crossmodal conflicts is inversely proportional to the strength of coupling between the signals, we measured sensitivity to crossmodal spatial conflicts as a function of the crosscorrelation between audiovisual signals. Crosscorrelation (time-lag 0 ms) modulated observers’ performance, with lower sensitivity to crossmodal conflicts being measured for correlated than for uncorrelated audiovisual signals. The current results demonstrate that crosscorrelation promotes multisensory integration. A Bayesian framework is proposed to interpret the present results whereby stimulus correlation is represented on the prior distribution of expected crossmodal co-occurrence.

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 Datum: 2011-09
 Publikationsstatus: Im Druck publiziert
 Seiten: -
 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: URI: http://www.perceptionweb.com/abstract.cgi?id=v110608
BibTex Citekey: PariseHSE2011_3
 Art des Abschluß: -

Veranstaltung

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Titel: 34th European Conference on Visual Perception
Veranstaltungsort: Toulouse, France
Start-/Enddatum: -

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