Age-related neural correlates of cognitive task performance under increased postural load

Impe, Annouchka Van; Bruijn, Sjoerd M.; Coxon, James P.; Wenderoth, Nicole; Sunaert, Stefan; Duysens, Jacques; Swinnen, Stephan P.

doi:10.1007/s11357-012-9499-2

Cited by 20 publications

(16 citation statements)

References 71 publications

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“…Low statistical power could underlie the absence of correlations between fMRI measures and DTC. However, the number of participants in our study (32 old adults, 23 young adults) is high compared with similar studies [ 5 ], [ 24 ], [ 90 ], [ 91 ]. Furthermore, the scatter plots in Fig 5 show no trend for the negative correlation that would be expected based on the structural interference hypothesis and even show a tendency towards a positive correlation.…”

Section: Discussionmentioning

confidence: 77%

Neural correlates of motor-cognitive dual-tasking in young and old adults

et al. 2017

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When two tasks are performed simultaneously, performance often declines in one or both tasks. These so-called dual-task costs are more pronounced in old than in young adults. One proposed neurological mechanism of the dual-task costs is that old compared with young adults tend to execute single-tasks with higher brain activation. In the brain regions that are needed for both tasks, the reduced residual capacity may interfere with performance of the dual-task. This competition for shared brain regions has been called structural interference. The purpose of the study was to determine whether structural interference indeed plays a role in the age-related decrease in dual-task performance. Functional magnetic resonance imaging (fMRI) was used to investigate 23 young adults (20–29 years) and 32 old adults (66–89 years) performing a calculation (serial subtraction by seven) and balance-simulation (plantar flexion force control) task separately or simultaneously. Behavioral performance decreased during the dual-task compared with the single-tasks in both age groups, with greater dual-task costs in old compared with young adults. Brain activation was significantly higher in old than young adults during all conditions. Region of interest analyses were performed on brain regions that were active in both tasks. Structural interference was apparent in the right insula, as quantified by an age-related reduction in upregulation of brain activity from single- to dual-task. However, the magnitude of upregulation did not correlate with dual-task costs. Therefore, we conclude that the greater dual-task costs in old adults were probably not due to increased structural interference.

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Section: Discussionmentioning

confidence: 77%

Neural correlates of motor-cognitive dual-tasking in young and old adults

et al. 2017

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“…Greater postural sway in a static condition has been related to greater incidence of falls in older adults (Bergland and Wyller, 2004;Lajoie and Gallagher, 2004;Verghese et al, 2002) and is therefore considered an indicator of declined postural stability. Most of the studies assessing postural performance in static standing showed a decreased performance in healthy older adults as compared to young adults (e.g., Huxhold et al, 2006;Maylor and Wing, 1996;Prado et al, 2007;Raymakers et al, 2005;Van Impe et al, 2013). However, other studies did not report such age-related differences (e.g., Anstey et al, 1993;Bernard-Demanze et al, 2009;Doumas et al, 2008;Shumway-Cook et al, 1997;Simoneau et al, 2008;Smolders et al, 2010).…”

Section: Stability and Processing Of Posture In Agingmentioning

confidence: 99%

“…Specifically, activations evidenced in the presence of low-frequency stimuli that reorient attention include the temporo-parietal junction and the ventral frontal cortex. In view of the well supported anterior-posterior gradient referring to a more pronounced age-related degeneration in anterior brain regions, areas involved in cognition and executive control are relatively more affected than others (Bennett et al, 2010;Coxon et al, 2012;Lu et al, 2013;Sullivan and Pfefferbaum, 2006;Van Impe et al, 2012).…”

Section: Brain Correlatesmentioning

confidence: 99%

Age-related differences in attentional cost associated with postural dual tasks: Increased recruitment of generic cognitive resources in older adults

Boisgontier

Beets

Duysens

et al. 2013

Neuroscience & Biobehavioral Reviews

246

212

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Dual-task designs have been used widely to study the degree of automatic and controlled processing involved in postural stability of young and older adults. However, several unexplained discrepancies in the results weaken this literature. To resolve this problem, a careful selection of dual-task studies that met certain methodological criteria are considered with respect to reported interactions of age (young vs. older adults)×task (single vs. dual task) in stable and unstable postural conditions. Our review shows that older adults are able to perform a postural dual task as well as younger adults in stable conditions. However, when the complexity of the postural task is increased by dynamic conditions (surface and surround), performance in postural, concurrent, or both tasks is more affected in older relative to young adults. In light of neuroimaging studies and new conceptual frameworks, these results demonstrate an age-related increase of controlled processing of standing associated with greater intermittent adjustments.

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“…Aging is associated with numerous changes in the neuromuscular system (Hunter et al 2016;Shaffer and Harrison 2007) that are accompanied by a general decline in motor performance, as reflected in a decrease in maximal muscle force (Frontera et al 1991) and force control accuracy (Baudry et al 2010;Tracy and Enoka 2002), and an increase in center of pressure excursions during unperturbed upright standing (Abrahamová and Hlavačka 2008;Laughton et al 2003;Nagai et al 2011;Van Impe et al 2013). From a clinical point of view, it is worth noting that the decrease in postural control is associated with an increased risk of falling (Horak 2006;Maki et al 1994).…”

Section: Age-related Changes In Proprioceptionmentioning

confidence: 99%

Age-related changes in leg proprioception: implications for postural control

Henry

Baudry

2019

Journal of Neurophysiology

167

113

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In addition to being a prerequisite for many activities of daily living, the ability to maintain steady upright standing is a relevant model to study sensorimotor integrative function. Upright standing requires managing multimodal sensory inputs to produce finely tuned motor output that can be adjusted to accommodate changes in standing conditions and environment. The sensory information used for postural control mainly arises from the vestibular system of the inner ear, vision, and proprioception. Proprioception (sense of body position and movement) encompasses signals from mechanoreceptors (proprioceptors) located in muscles, tendons, and joint capsules. There is general agreement that proprioception signals from leg muscles provide the primary source of information for postural control. This is because of their exquisite sensitivity to detect body sway during unperturbed upright standing that mainly results from variations in leg muscle length induced by rotations around the ankle joint. However, aging is associated with alterations of muscle spindles and their neural pathways, which induce a decrease in the sensitivity, acuity, and integration of the proprioceptive signal. These alterations promote changes in postural control that reduce its efficiency and thereby may have deleterious consequences for the functional independence of an individual. This narrative review provides an overview of how aging alters the proprioceptive signal from the legs and presents compelling evidence that these changes modify the neural control of upright standing.

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Age-related neural correlates of cognitive task performance under increased postural load

Cited by 20 publications

References 71 publications

Neural correlates of motor-cognitive dual-tasking in young and old adults

Neural correlates of motor-cognitive dual-tasking in young and old adults

Age-related differences in attentional cost associated with postural dual tasks: Increased recruitment of generic cognitive resources in older adults

Age-related changes in leg proprioception: implications for postural control

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