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

schofield, AJ and curzon-jones, B and Hollands, MA (2016) Reduced sensitivity for visual textures affects judgments of shape-from-shading and step climbing behaviour in older adults. Experimental Brain Research. ISSN 0014-4819

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Abstract

Falls on stairs are a major hazard for older adults. Visual decline in normal aging 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 are 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.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s00221-016-4816-0
Uncontrolled Keywords: 11 Medical And Health Sciences, 17 Psychology And Cognitive Sciences
Subjects: R Medicine > R Medicine (General)
Divisions: Sport & Exercise Sciences
Publisher: Springer Verlag
Date Deposited: 21 Nov 2016 11:36
Last Modified: 07 Sep 2017 13:04
DOI or Identification number: 10.1007/s00221-016-4816-0
URI: http://researchonline.ljmu.ac.uk/id/eprint/4713

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