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  Measuring and modeling changes of direction detection thresholds for different acceleration profiles

Soyka, F. (2011). Measuring and modeling changes of direction detection thresholds for different acceleration profiles. Talk presented at 21. Oculomotor Meeting MüTüZü. München, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BCB0-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-54DA-A
Genre: Talk

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MüTüZü_Abstract.pdf (Abstract), 59KB
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Soyka, F1, 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: In the absence of vision, the perceived direction of translational self motion is largely governed by signals originating from the otoliths. Although it has been shown that direction detection thresholds depend on the frequency of the motion stimulus, the influence of the actual time course of the motion has not been thoroughly investigated. The goal of our study was to measure, model and predict vestibular direction detection thresholds for different motion profiles in the horizontal plane. Three types of acceleration profiles (sinusoidal, trapezoidal and triangular) were tested for three different durations (1.5s, 2.36s and 5.86s). The lowest thresholds were found for trapezoidal profiles and the highest for triangular profiles. The measurements are further explained by a model based on a transfer function which is able to predict direction detection thresholds for all types of acceleration profiles. Since previous models were only able to describe thresholds for sinusoidal profiles, our modeling approach represents an important advancement.

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 Dates: 2011-02
 Publication Status: Published online
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 Identifiers: BibTex Citekey: Soyka2011
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Title: 21. Oculomotor Meeting MüTüZü
Place of Event: München, Germany
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Invited: Yes

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