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  Two strategies to integrate visual-vestibular self motion: comparison of landmark and optic-flow information

von der Heyde, M., & Bülthoff, H. (2001). Two strategies to integrate visual-vestibular self motion: comparison of landmark and optic-flow information. Poster presented at Twenty-fourth European Conference on Visual Perception (ECVP 2001), Kusadasi, Turkey.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E23E-D Version Permalink: http://hdl.handle.net/21.11116/0000-0005-AB02-8
Genre: Poster

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von der Heyde, M1, 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, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Perception of self turns is crucial for self-localisation and, consequently, for navigation. Yet in most virtual reality (VR) applications turns are misperceived, which leads to disorientation. We compare the effects of optic-flow information (textured ground) and reliable landmark information (town environment) on perceived turns, each in combination with vestibular information. We used a VR setup including a motion simulator (Stewart platform) and a head-mounted display for presenting vestibular and visual stimuli, respectively. The subjects' task was to learn and memorise a sequence of turns that included heading changes between 8.5° and 17°. During a reproduction phase, the gain between the joystick control and the resulting visual and vestibular turns was independently varied by a factor of 1/2½, 1, or 2½. When landmark information was provided, subjects followed a purely visual strategy, thus ignoring conflicting vestibular information. With reduced visual information (optic flow), the modality with the bigger gain factor had a dominant effect on the reproduced turns. Our interpretation is that the integration of visual and vestibular information follows a 'max rule', in which the larger signal is responsible for the perceived and memorised heading change.

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 Dates: 2001-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: 639
DOI: 10.1177/03010066010300S101
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Title: Twenty-fourth European Conference on Visual Perception (ECVP 2001)
Place of Event: Kusadasi, Turkey
Start-/End Date: 2001-08-26 - 2001-08-30

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 30 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 29 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369