Intra- and inter-task reliability of spatial attention measures in healthy older adults
Open Access
- 23 December 2019
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 14 (12), e0226424
- https://doi.org/10.1371/journal.pone.0226424
Abstract
At present, there is a lack of systematic investigation into intra- and inter-task consistency effects in older adults, when investigating lateralised spatial attention. In young adults, spatial attention typically manifests itself in a processing advantage for the left side of space (“pseudoneglect”), whereas older adults have been reported to display no strongly lateralised bias, or a preference towards the right side. Building on our earlier study in young adults, we investigated older adults, aged between 60 to 86 years, on five commonly used spatial attention tasks (line bisection, landmark, grey and grating scales and lateralised visual detection). Results confirmed a stable test-retest reliability for each of the five spatial tasks across two testing days. However, contrary to our expectations of a consistent lack in bias or a rightward bias, two tasks elicited significant left spatial biases in our sample of older participants, in accordance with pseudoneglect (namely the line bisection and greyscales tasks), while the other three tasks (landmark, grating scales, and lateralised visual detection tasks) showed no significant biases to either side of space. This lack of inter-task correlations replicates recent findings in young adults. Comparing the two age groups revealed that only the landmark task was age sensitive, with a leftward bias in young adults and an eliminated bias in older adults. In view of these findings of no significant inter-task correlations, as well as the inconsistent directions of the observed spatial biases for the older adults across the five tested tasks, we argue that pseudoneglect is a multi-component phenomenon and highly task sensitive. Each task may engage slightly distinct neural mechanisms, likely to be impacted differently by age. This complicates generalisation and comparability of pseudoneglect effects across different tasks, age-groups and hence studies.Keywords
Funding Information
- Wellcome Trust (209209/Z/17/Z 17 November)
This publication has 54 references indexed in Scilit:
- Differential effects of aging on spatial contrast sensitivity to linear and polar sine-wave gratingsBrazilian Journal of Medical and Biological Research, 2013
- Spatial Bias and Right Hemisphere Function: Sex-Specific Changes with AgingJournal of the International Neuropsychological Society, 2011
- Asymmetrical Effects of Adaptation to Left- and Right-Shifting Prisms Depends on Pre-existing Attentional BiasesJournal of the International Neuropsychological Society, 2010
- Human Neuroscience and the Aging Mind: A New Look at Old ProblemsThe Journals of Gerontology, Series B: Psychological Sciences and Social Sciences, 2010
- Brain activity during landmark and line bisection tasksFrontiers in Human Neuroscience, 2009
- Is it what you see, or how you say it? Spatial bias in young and aged subjectsJournal of the International Neuropsychological Society, 2008
- Influences of time and spatial frequency on the perceptual bias: Evidence for competition between hemispheresNeuropsychologia, 2007
- Enhanced visual spatial attention ipsilateral to rTMS-induced 'virtual lesions' of human parietal cortexNature Neuroscience, 2001
- Comparing left and right hand in line bisection at different agesDevelopmental Neuropsychology, 1999
- Effect of age on the line bisection testJournal of Clinical and Experimental Neuropsychology, 1995