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  Bayesian integration of visual and vestibular signals for heading

Butler, J., Smith, S., Campos, J., & Bülthoff, H. (2010). Bayesian integration of visual and vestibular signals for heading. Journal of Vision, 10(11): 23, pp. 1-13. doi:10.1167/10.11.23.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BE46-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-6AA9-9
Genre: Journal Article

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 Creators:
Butler, JS1, 2, Author              
Smith, ST, Author              
Campos, JL1, 2, Author              
Bülthoff, HH1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Self-motion through an environment involves a composite of signals such as visual and vestibular cues. Building upon previous results showing that visual and vestibular signals combine in a statistically optimal fashion, we investigated the relative weights of visual and vestibular cues during self-motion. This experiment was comprised of three experimental conditions: vestibular alone, visual alone (with four different standard heading values), and visual–vestibular combined. In the combined cue condition, inter-sensory conflicts were introduced (Δ = ±6° or ±10°). Participants performed a 2-interval forced choice task in all conditions and were asked to judge in which of the two intervals they moved more to the right. The cue-conflict condition revealed the relative weights associated with each modality. We found that even when there was a relatively large conflict between the visual and vestibular cues, participants exhibited a statistically optimal reduction in variance. On the other hand, we found that the pattern of results in the unimodal conditions did not predict the weights in the combined cue condition. Specifically, visual–vestibular cue combination was not predicted solely by the reliability of each cue, but rather more weight was given to the vestibular cue.

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 Dates: 2010-09
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1167/10.11.23
BibTex Citekey: 6783
 Degree: -

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Title: Journal of Vision
Source Genre: Journal
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Publ. Info: Charlottesville, VA : Scholar One, Inc.
Pages: - Volume / Issue: 10 (11) Sequence Number: 23 Start / End Page: 1 - 13 Identifier: ISSN: 1534-7362
CoNE: https://pure.mpg.de/cone/journals/resource/111061245811050