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Experimental Brain Research

, Volume 235, Issue 2, pp 573–583 | Cite as

Reduced sensitivity for visual textures affects judgments of shape-from-shading and step-climbing behaviour in older adults

  • Andrew J. SchofieldEmail author
  • Benjamin Curzon-Jones
  • Mark A. Hollands
Research Article

Abstract

Falls on stairs are a major hazard for older adults. Visual decline in normal ageing can affect step-climbing ability, altering gait and reducing toe clearance. Here we show that a loss of fine-grained visual information associated with age can affect the perception of surface undulations in patterned surfaces. We go on to show that such cues affect the limb trajectories of young adults, but due to their lack of sensitivity, not that of older adults. Interestingly neither the perceived height of a step nor conscious awareness is altered by our visual manipulation, but stepping behaviour is, suggesting that the influence of shape perception on stepping behaviour is via the unconscious, action-centred, dorsal visual pathway.

Keywords

Vision Texture Shape-from-shading Step climbing 

Notes

Acknowledgements

BC-J was supported by an Age UK Research into Ageing studentship. We thank Helen Jebbitt for her assistance with data collection.

Supplementary material

221_2016_4816_MOESM1_ESM.docx (13 kb)
Supplementary material 1 (DOCX 13 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Andrew J. Schofield
    • 1
    Email author
  • Benjamin Curzon-Jones
    • 2
  • Mark A. Hollands
    • 3
  1. 1.School of PsychologyUniversity of BirminghamEdgbaston, BirminghamUK
  2. 2.School of Sport, Exercise and Rehabilitation SciencesUniversity of BirminghamEdgbaston, BirminghamUK
  3. 3.Research Institute for Sport and Exercise SciencesLiverpool John Moores UniversityLiverpoolUK

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