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  4. Sensorimotor Control of Gait: A Novel Approach for the Study of the Interplay of Visual and Proprioceptive Feedback
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Sensorimotor Control of Gait: A Novel Approach for the Study of the Interplay of Visual and Proprioceptive Feedback

Full metadata

Description

Sensorimotor control theories propose that the central nervous system exploits expected sensory consequences generated by motor commands for movement planning, as well as online sensory feedback for comparison with expected sensory feedback for monitoring and correcting, if needed, ongoing motor output. In our study, we tested this theoretical framework by quantifying the functional role of expected vs. actual proprioceptive feedback for planning and regulation of gait in humans. We addressed this question by using a novel methodological approach to deliver fast perturbations of the walking surface stiffness, in conjunction with a virtual reality system that provided visual feedback of upcoming changes of surface stiffness. In the “predictable” experimental condition, we asked subjects to learn associating visual feedback of changes in floor stiffness (sand patch) during locomotion to quantify kinematic and kinetic changes in gait prior to and during the gait cycle. In the “unpredictable” experimental condition, we perturbed floor stiffness at unpredictable instances during the gait to characterize the gait-phase dependent strategies in recovering the locomotor cycle. For the “unpredictable” conditions, visual feedback of changes in floor stiffness was absent or inconsistent with tactile and proprioceptive feedback. The investigation of these perturbation-induced effects on contralateral leg kinematics revealed that visual feedback of upcoming changes in floor stiffness allows for both early (preparatory) and late (post-perturbation) changes in leg kinematics. However, when proprioceptive feedback is not available, the early responses in leg kinematics do not occur while the late responses are preserved although in a, slightly attenuated form. The methods proposed in this study and the preliminary results of the kinematic response of the contralateral leg open new directions for the investigation of the relative role of visual, tactile, and proprioceptive feedback on gait control, with potential implications for designing novel robot-assisted gait rehabilitation approaches.

Date Created
2015-02-09
Contributors
  • Frost, Ryan (Author)
  • Skidmore, Jeffrey (Author)
  • Santello, Marco (Author)
  • Artemiadis, Panagiotis (Author)
  • Ira A. Fulton Schools of Engineering (Contributor)
Resource Type
Text
Extent
8 pages
Language
eng
Copyright Statement
In Copyright
Reuse Permissions
Attribution
Primary Member of
ASU Scholarship Showcase
Identifier
Digital object identifier: 10.3389/fnhum.2015.00014
Identifier Type
International standard serial number
Identifier Value
1662-5161
Peer-reviewed
No
Open Access
No
Series
FRONTIERS IN HUMAN NEUROSCIENCE
Handle
https://hdl.handle.net/2286/R.I.28142
Preferred Citation

Frost, Ryan, Skidmore, Jeffrey, Santello, Marco, & Artemiadis, Panagiotis (2015). Sensorimotor control of gait: a novel approach for the study of the interplay of visual and proprioceptive feedback. Frontiers in Human Neuroscience, 9(14). http://dx.doi.org/10.3389/fnhum.2015.00014

Level of coding
minimal
Cataloging Standards
asu1
System Created
  • 2015-03-09 05:33:40
System Modified
  • 2021-12-09 03:24:53
  •     
  • 1 year 5 months ago
Additional Formats
  • OAI Dublin Core
  • MODS XML

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