Age-related changes in visual pseudoneglect.

Abstract:

:Pseudoneglect is a slight but consistent leftward attentional bias commonly observed in healthy young populations, purportedly explained by right hemispheric dominance. It has been suggested that normal aging might be associated with a decline of the right hemisphere. According to this hypothesis, a few studies have shown that elderly tend to exhibit a rightward attentional bias in line bisection. In the present study, we tested this hypothesis in young and older participants using a perceptual landmark task. Results yield evidence for an age-related shift, from a strong attentional leftward bias in young adults toward a suppressed or even a reversed bias in the elderly. Right hemisphere impairment coupled to a left hemispheric compensation might explain the perceptual shift observed in older adults. However, a decline in corpus callosum function cannot be excluded. Alternatively, these results may be in agreement with the hypothesis of an age-related specific inhibition of return dysfunction, an overt attentional orienting mechanism, and/or a decrease of dopamine.

journal_name

Brain Cogn

journal_title

Brain and cognition

authors

Schmitz R,Peigneux P

doi

10.1016/j.bandc.2011.04.002

subject

Has Abstract

pub_date

2011-08-01 00:00:00

pages

382-9

issue

3

eissn

0278-2626

issn

1090-2147

pii

S0278-2626(11)00069-8

journal_volume

76

pub_type

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