What you see is what you step: the horizontal-vertical illusion increases toe clearance in older adults during stair ascent

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Foster, RJ ; Whitaker, D ; Scally, AJ ; Buckley, JG ; Elliott, DB (2015)
  • Publisher: Association for Research in Vision and Ophthalmology
  • Related identifiers: doi: 10.1167/iovs.14-16018
  • Subject:
    mesheuropmc: human activities | musculoskeletal, neural, and ocular physiology

PURPOSE Falls on stairs are a significant cause of morbidity and mortality in elderly people. A simple safety strategy to avoid tripping on stairs is increasing foot clearance. We determined whether a horizontal–vertical illusion superimposed onto stairs to create an illusory perceived increase in stair-riser height would increase stair ascent foot clearance in older participants.
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