Age-related changes in the allocation of spatially directed focal attention
Aleksandra Mańkowska , Kenneth M. Heilman , John B. Williamson , Jarosław Michałowski , Michał Harciarek
AbstractObjectives: Leftward deviation on a horizontal line bisection test (pseudoneglect) might be induced by right hemispheric dominance for mediating spatial or global attention, or a hemispheric asymmetry in the ability to spatially disengage attention. With aging, this leftward bias is reduced, likely due to the aging-related deterioration of right hemisphere mediated functions (right hemi-aging) or hemispheric asymmetry reduction in old adults (HAROLD). Methods: Forty-seven healthy adults divided into younger and older groups performed a modified Posner spatial-attentional task. Results: Overall, younger individuals responded faster to left than right-sided imperative stimuli. In contrast, older participants did not reveal a right-left asymmetry to imperative stimuli. The younger group also revealed a strong inverse relationship between the reaction time to right valid cues and the leftward attentional bias while performing the line bisection task (pseudoneglect). Conclusions: Our results provide support for both the right hemisphere spatial-attentional dominance hypothesis of pseudoneglect and the right hemi-aging hypotheses.
|Journal series||Aging, Neuropsychology and Cognition, [Aging, Neuropsychology, and Cognition, Aging, Neuropsychology and Cognition], ISSN 1382-5585, e-ISSN 1744-4128, (N/A 70 pkt)|
|Publication size in sheets||0.8|
|Keywords in English||Spatial attention, Posner task, hemisphere asymmetry reduction (HAROLD), right hemisphere deterioration with aging (right hemi-aging), pseudoneglect|
|ASJC Classification||; ; ;|
|Publication indicators||: 2018 = 0.911; : 2017 = 1.845 (2) - 2017=1.892 (5)|
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