Journal article

Matching optical flow to motor speed in virtual reality while running on a treadmill

  • Caramenti, Martina Department of Neuroscience and Movement Science, University of Fribourg, Switzerland - Istituto di Bioimmagini e Fisiologia Molecolare, Consiglio Nazionale delle Ricerche, Segrate, Milano, Italy - HumanTech Institute, University of Applied Sciences and Arts Western Switzerland, Fribourg, Switzerland
  • Lafortuna, Claudio L. Istituto di Bioimmagini e Fisiologia Molecolare, Consiglio Nazionale delle Ricerche, Segrate, Milano, Italy
  • Mugellini, Elena HumanTech Institute, University of Applied Sciences and Arts Western Switzerland, Fribourg, Switzerland
  • Abou Khaled, Omar HumanTech Institute, University of Applied Sciences and Arts Western Switzerland, Fribourg, Switzerland
  • Bresciani, Jean-Pierre Department of Neuroscience and Movement Science, University of Fribourg, Switzerland
  • Dubois, Amandine Department of Neuroscience and Movement Science, University of Fribourg, Switzerland
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    11.04.2018
Published in:
  • PLOS ONE. - 2018, vol. 13, no. 4, p. e0195781
English We investigated how visual and kinaesthetic/efferent information is integrated for speed perception in running. Twelve moderately trained to trained subjects ran on a treadmill at three different speeds (8, 10, 12 km/h) in front of a moving virtual scene. They were asked to match the visual speed of the scene to their running speed–i.e., treadmill’s speed. For each trial, participants indicated whether the scene was moving slower or faster than they were running. Visual speed was adjusted according to their response using a staircase until the Point of Subjective Equality (PSE) was reached, i.e., until visual and running speed were perceived as equivalent. For all three running speeds, participants systematically underestimated the visual speed relative to their actual running speed. Indeed, the speed of the visual scene had to exceed the actual running speed in order to be perceived as equivalent to the treadmill speed. The underestimation of visual speed was speed-dependent, and percentage of underestimation relative to running speed ranged from 15% at 8km/h to 31% at 12km/h. We suggest that this fact should be taken into consideration to improve the design of attractive treadmill-mediated virtual environments enhancing engagement into physical activity for healthier lifestyles and disease prevention and care.
Faculty
Faculté des sciences et de médecine
Department
Département de Médecine
Language
  • English
Classification
Biology
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/306663
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