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  Humans can extract distance and velocity from vestibular perceived acceleration

von der Heyde, M., Riecke, B., Cunningham, D., & Bülthoff, H. (2000). Humans can extract distance and velocity from vestibular perceived acceleration. Poster presented at 7th Annual Meeting of the Cognitive Neuroscience Society (CNS 2000), San Francisco, CA, USA.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E513-F Version Permalink: http://hdl.handle.net/21.11116/0000-0007-569C-9
Genre: Poster

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 Creators:
von der Heyde, M1, 2, Author              
Riecke, BE1, 2, Author              
Cunningham, DW1, 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: Purpose: The vestibular system is known to measure accelerations for linear forward movements. Can humans integrate these vestibular signals to derive reliably distance and velocity estimates? Methods: Blindfolded naive volunteers participated in a psychophysical experiment using a Stewart-Platform motion simulator. The vestibular stimuli consisted of Gaussian-shaped translatory velocity profiles with a duration of less than 4 seconds. The full two-factorial design covered 6 peak accelerations above threshold and 5 distances up to 25cm with 4 repetitions. In three separate blocks, the subjects were asked to verbally judge on a scale from 1 to 100 traveled distance, maximum velocity and maximum acceleration. Results: Subjects perceived distance, velocity and acceleration quite consistently, but with systematic errors. The distance estimates showed a linear scaling towards the mean and were independent of accelerations. The correlation of perceived and real velocity was linear and showed no systematic influence of distances or accelerations. High accelerations were drastically underestimated and accelerations close to threshold were overestimated, showing a logarithmic dependency. Conclusions: Despite the fact that the vestibular system measures acceleration only, one can derive peak velocity and traveled distance from it. Interestingly, even though maximum acceleration was perceived non linear, velocity and distance was judged consistently linear.

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 Dates: 2000-04
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: BibTex Citekey: 164
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Title: 7th Annual Meeting of the Cognitive Neuroscience Society (CNS 2000)
Place of Event: San Francisco, CA, USA
Start-/End Date: 2000-04-09 - 2004-04-11

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