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Related Experiment Video

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Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
06:54

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder

Published on: March 4, 2018

Peripheral visual cues affect minimum-foot-clearance during overground locomotion.

Valentina Graci1, David B Elliott, John G Buckley

  • 1Vision and Mobility Laboratory, Bradford School of Optometry and Vision Science, University of Bradford, Bradford, UK. v.graci@bradford.ac.uk

Gait & Posture
|July 25, 2009
PubMed
Summary

Peripheral vision is crucial for safe walking. Blocking peripheral vision (circumferential-peripheral occlusion) made people increase foot clearance, suggesting a strategy for navigating without visual cues from the body.

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Published on: August 25, 2020

Area of Science:

  • Human locomotion
  • Visual perception
  • Motor control

Background:

  • Peripheral visual cues play a role in gait control.
  • Understanding visual feedback mechanisms is essential for locomotion research.

Purpose of the Study:

  • To investigate the role of peripheral visual cues in controlling minimum foot clearance during overground walking.
  • To determine how different visual occlusion conditions affect gait parameters.

Main Methods:

  • Eleven subjects walked on a clear path under four visual conditions: full vision, upper occlusion, lower occlusion, and circumferential-peripheral occlusion.
  • Gait parameters, including minimum foot clearance, walking speed, and step length, were measured.

Main Results:

  • Circumferential-peripheral occlusion led to increased minimum foot clearance, decreased walking speed, and reduced step length.
  • Lower occlusion did not result in increased minimum foot clearance, indicating upper visual field information was sufficient for gait guidance.
  • No significant reduction in minimum foot clearance variability was observed under circumferential-peripheral occlusion.

Conclusions:

  • Peripheral vision is vital for fine-tuning foot trajectory during locomotion.
  • When peripheral cues are unavailable, individuals adopt a cautious gait strategy by increasing foot clearance.
  • The visual system utilizes different strategies for gait control based on the availability of peripheral visual information.