Publication year
2013Source
Journal of the American Aging Association, 35, 6, (2013), pp. 2111-24ISSN
Annotation
01 december 2013
Publication type
Article / Letter to editor
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Organization
Rehabilitation
Journal title
Journal of the American Aging Association
Volume
vol. 35
Issue
iss. 6
Page start
p. 2111
Page end
p. 24
Subject
NCEBP 10: Human Movement & Fatigue DCN PAC - Perception action and controlAbstract
Behavioral studies suggest that postural control requires increased cognitive control and visuospatial processing with aging. Consequently, performance can decline when concurrently performing a postural and a demanding cognitive task. We aimed to identify the neural substrate underlying this effect. A demanding cognitive task, requiring visuospatial transformations, was performed with varying postural loads. More specifically, old and young subjects performed mental rotations of abstract figures in a seated position and when standing on a force platform. Additionally, functional magnetic resonance imaging (fMRI) was used to identify brain regions associated with mental rotation performance. Old as compared to young subjects showed increased blood oxygenation level-dependent (BOLD) responses in a frontoparietal network as well as activations in additional areas. Despite this overall increased activation, they could still modulate BOLD responses with increasing task complexity. Importantly, activity in left lingual gyrus was highly predictive (r = -0.83, adjusted R(2) = 0.65) of the older subjects' degree of success in mental rotation performance when shifting from a sitting to a standing position. More specifically, increased activation in this area was associated with better performance, once postural load increased.
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- Academic publications [245263]
- Faculty of Medical Sciences [93208]
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