English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Multisensory integration: When correlation implies causation

Parise, C., Harrar, V., Spence, C., & Ernst, M. (2011). Multisensory integration: When correlation implies causation. i-Perception, 2(8), 109.

Item is

Files

show Files

Locators

show
hide
Description:
-

Creators

show
hide
 Creators:
Parise, CV1, 2, Author              
Harrar, V, Author
Spence, C, Author
Ernst, M1, 2, Author              
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              

Content

show
hide
Free keywords: -
 Abstract: 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 cross-correlation, 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 cross-correlation between audiovisual signals. Cross-correlation (time-lag 0ms) modulated observers’ performance, with lower sensitivity to crossmodal conflicts being measured for correlated than for uncorrelated audiovisual signals. The current results demonstrate that cross-correlation 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.

Details

show
hide
Language(s):
 Dates: 2011-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: PariseHSE2011
DOI: 10.1068/ic901
 Degree: -

Event

show
hide
Title: 12th International Multisensory Research Forum (IMRF 2011)
Place of Event: Fukuoka, Japan
Start-/End Date: 2011-10-17 - 2011-10-20

Legal Case

show

Project information

show

Source 1

show
hide
Title: i-Perception
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 2 (8) Sequence Number: - Start / End Page: 109 Identifier: -