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  Multisensory integration in the perception of self-motion about an Earth-vertical yaw axis

de Winkel, K., Soyka, F., Barnett-Cowan, M., Groen, E., & Bülthoff, H. (2011). Multisensory integration in the perception of self-motion about an Earth-vertical yaw axis. Poster presented at 34th European Conference on Visual Perception, Toulouse, France.

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de Winkel, K1, 2, Autor           
Soyka, F1, 2, Autor           
Barnett-Cowan, M1, 2, Autor           
Groen, E, Autor
Bülthoff, HH1, 2, Autor           
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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 Zusammenfassung: Numerous studies report that humans integrate multisensory information in a statistically optimal fashion. However, with respect to self-motion perception, results are inconclusive. Here we test the hypothesis that visual and inertial cues in simulator environments are optimally integrated and that this integration develops over time. Eight participants performed a 2AFC discrimination experiment in visual-only, inertial-only and visual-inertial conditions. Conditions were repeated three times. Inertial motion stimuli were one-period 0.5 Hz sinusoidal acceleration profiles. Visual stimuli were videos of a vertical stripe pattern synchronized with inertial motion. Stimuli were presented in pairs with different peak velocity amplitudes. Participants judged which rotation of a pair had the highest velocity. Precision estimates were derived from psychometric functions. Optimal integration predicts improved precision in the combined condition. However, precision did not differ between the visual and combined conditions. This suggests that participants based their responses predominantly on visual motion. Alternatively, the results could be consistent with optimal integration if the assumption that visual precision remains unchanged during inertial motion was violated. We suggest that a change in visual sensitivity should be considered when investigating optimal integration of visual and inertial cues.

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 Datum: 2011-09
 Publikationsstatus: Erschienen
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 Identifikatoren: BibTex Citekey: deWinkelSBGB2011
DOI: 10.1177/03010066110400S102
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Veranstaltung

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Titel: 34th European Conference on Visual Perception
Veranstaltungsort: Toulouse, France
Start-/Enddatum: 2011-08-28 - 2011-09-01

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Titel: Perception
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Pion Ltd.
Seiten: - Band / Heft: 40 (ECVP Abstract Supplement) Artikelnummer: - Start- / Endseite: 183 Identifikator: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369