Improved Accuracy on Lateralized Spatial Judgments in Healthy Aging

Author:

Williamson John B.ORCID,Murphy Aidan,Lamb Damon G.,Schwartz Zared,Szeles Dana,Harciarek Michal,Mańkowska Aleksandra,Heilman Kenneth M.

Abstract

AbstractObjectives:Healthy young adults often demonstrate a leftward spatial bias called “pseudoneglect” which often diminishes with aging. One hypothesis for this phenomenon is an age-related deterioration in right hemisphere functions (right hemi-aging). If true, then a greater rightward bias should be evident on all spatial attention tasks regardless of content. Another hypothesis is a decrease in asymmetrical hemispheric activation with age (HAROLD). If true, older participants may show reduced bias in all spatial tasks, regardless of leftward or rightward biasing of specific spatial content.Methods:Seventy right-handed healthy participants, 33 younger (21–40) and 37 older (60–78), were asked to bisect solid and character-letter lines as well as to perform left and right trisections of solid lines.Results:Both groups deviated toward the left on solid line bisections and left trisections. Both groups deviated toward the right on right trisections and character line bisections. In all tasks, the older participants were more accurate than the younger participants.Conclusions:The finding that older participants were more accurate than younger participants across all bisection and trisection conditions suggests a decrease in the asymmetrical hemispheric activation of these specialized networks important in the allocation of contralateral spatial attention or spatial action intention.

Publisher

Cambridge University Press (CUP)

Subject

Psychiatry and Mental health,Neurology (clinical),Clinical Psychology,General Neuroscience

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Vertical pseudoneglect: Sensory-attentional versus action-intentional;Journal of Clinical and Experimental Neuropsychology;2022-02-07

2. A Meta-Analysis of Line Bisection and Landmark Task Performance in Older Adults;Neuropsychology Review;2021-04-22

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