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  Measurement of instantaneous perceived self-motion using continuous pointing

Siegle, J., Campos, J., Mohler, B., Loomis, J., & Bülthoff, H. (2009). Measurement of instantaneous perceived self-motion using continuous pointing. Experimental Brain Research, 195(3), 429-444. doi:10.1007/s00221-009-1805-6.

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Siegle, JH1, 2, Author              
Campos, JL1, 2, Author              
Mohler, BJ1, 2, Author              
Loomis, JM, Author              
Bülthoff, HH1, 2, Author              
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Abstract: In order to optimally characterize full-body self-motion perception during passive translations, changes in perceived location, velocity, and acceleration must be quantified in real time and with high spatial resolution. Past methods have failed to effectively measure these critical variables. Here, we introduce continuous pointing as a novel method with several advantages over previous methods. Participants point continuously to the mentally updated location of a previously viewed target during passive, full-body movement. High-precision motion-capture data of arm angle provide a measure of a participant’s perceived location and, in turn, perceived velocity at every moment during a motion trajectory. In two experiments, linear movements were presented in the absence of vision by passively translating participants with a robotic wheelchair or an anthropomorphic robotic arm (MPI Motion Simulator). The movement profiles included constant-velocity trajectories, two successive movement intervals separated by a b rief pause, and reversed-motion trajectories. Results indicate a steady decay in perceived velocity during constant-velocity travel and an attenuated response to mid-trial accelerations.

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 Dates: 2009-05
 Publication Status: Published in print
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 Identifiers: DOI: 10.1007/s00221-009-1805-6
BibTex Citekey: 5516
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Title: Experimental Brain Research
  Other : Exp. Brain Res.
Source Genre: Journal
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Publ. Info: Heidelberg : Springer-Verlag
Pages: - Volume / Issue: 195 (3) Sequence Number: - Start / End Page: 429 - 444 Identifier: ISSN: 0014-4819
CoNE: https://pure.mpg.de/cone/journals/resource/954925398496