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  Reduced vision selectively impairs spatial updating in fall-prone older adults

Barrett, M. M., Doheny, E. P., Setti, A., Maguinness, C., Foran, T. G., Kenny, R. A., et al. (2013). Reduced vision selectively impairs spatial updating in fall-prone older adults. Multisensory Research, 26(1-2), 69-94. doi:10.1163/22134808-00002412.

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 Creators:
Barrett , Maeve M1, Author
Doheny, Emer P1, Author
Setti, Annalisa1, Author
Maguinness, Corrina1, Author              
Foran, Timothy G1, Author
Kenny, Rose Anne1, Author
Newell, Fiona N1, Author
Affiliations:
1St. James’s Hospital, Dublin, Ireland , ou_persistent22              

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Free keywords: Ageing; Falls; Spatial updating; Path integration; Gait; Multisensory processing
 Abstract: The current study examined the role of vision in spatial updating and its potential contribution to an increased risk of falls in older adults. Spatial updating was assessed using a path integration task in fall-prone and healthy older adults. Specifically, participants conducted a triangle completion task in which they were guided along two sides of a triangular route and were then required to return, unguided, to the starting point. During the task, participants could either clearly view their surroundings (full vision) or visuo-spatial information was reduced by means of translucent goggles (reduced vision). Path integration performance was measured by calculating the distance and angular deviation from the participant’s return point relative to the starting point. Gait parameters for the unguided walk were also recorded. We found equivalent performance across groups on all measures in the full vision condition. In contrast, in the reduced vision condition, where participants had to rely on interoceptive cues to spatially update their position, fall-prone older adults made significantly larger distance errors relative to healthy older adults. However, there were no other performance differences between fall-prone and healthy older adults. These findings suggest that fall-prone older adults, compared to healthy older adults, have greater difficulty in reweighting other sensory cues for spatial updating when visual information is unreliable.

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Language(s): eng - English
 Dates: 2013-01-012013
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1163/22134808-00002412
PMID: 23713200
 Degree: -

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Title: Multisensory Research
Source Genre: Journal
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Publ. Info: Leiden : Brill
Pages: - Volume / Issue: 26 (1-2) Sequence Number: - Start / End Page: 69 - 94 Identifier: ISSN: 2213-4794
CoNE: https://pure.mpg.de/cone/journals/resource/2213-4794