Oculomotor tasks affect differently postural control in healthy children

Bucci, Maria Pia; Ajrezo, Layla; Wiener-Vacher, Sylvette

doi:10.1016/j.ijdevneu.2015.05.008

Cited by 14 publications

(8 citation statements)

References 41 publications

(38 reference statements)

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“…Postural control modulation depends on the availability of sensory information, features of the task performed and on the development of postural control (Bucci et al . ; Oliver et al . 2010).…”

Section: Introductionmentioning

confidence: 99%

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Dual‐task effects on postural sway during sit‐to‐stand movement in children with Down syndrome

Pena

Pavão

Oliveira

et al. 2019

J intellect Disabil Res

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Background Cognitive and postural tasks require common cognitive mechanisms, resulting in conflicts when both tasks are simultaneously performed. The presence of neuromotor dysfunctions, such as Down syndrome, may impair coordination processes required to perform dual-tasks. The objective of this study was to investigate the dual-task effects on postural sway during sit-to-stand movements in typical children and children with Down syndrome in a cross-sectional study. Methods Twenty six typical children (10.2 ± 2.4 years) and 21 with Down syndrome (10.3 ± 2.3 years) performed sit-to-stand in the following conditions: (1) simple task; (2) dual-task bimanual activity (DT-Bim): sit-to-stand while carrying a tray using both hands; (3) dual-task unimanual dominant activity (DT-Uni-Dom): sit-to-stand while holding a plastic cup simulating water using the dominant hand; (4) dual-task unimanual nondominant activity (DT-Uni-Nondom): sit-to-stand movement while holding a plastic cup simulating water. For data analysis, sit-to-stand was divided into three phases: preparation (phase 1), rising (phase 2), and stabilisation (phase 3). The following variables were calculated for each phase: anterior-posterior and medial-lateral amplitude of centre-of-pressure displacement, anterior-posterior and medial-lateral velocity of centre-of-pressure sway and area of centreof-pressure sway. Results Children with Down syndrome showed greater sway than typical children in all sit-to-stand phases. Typical children showed greater anterior-posterior amplitude in phase 2 of sit-to-stand during DT-Uni Nondom compared with DT-Uni Dom. Children with Down syndrome during simple task condition showed greater and faster values sway in phases 2 and 3 of sit-to-stand movement than in DT-Bim activity, DT-Uni Dom activity and DT-Uni Nondom activity. During the condition of DT-Bim activity, these children showed lower anterior-posterior velocity of sway in phase 2 than during DT-Uni Dom activity. Conclusions Children with Down syndrome showed greater postural sway during sit-to-stand than typical children. The addition of a concurrent motor task to sit-to-stand impacted postural sway in different intensities and in different ways across groups. Dualtasks increased body sway in typical children in the DT-Uni Nondom condition compared with dominant one. In children with Down syndrome, dual-tasks decreased body sway, apparently resulting in a postural strategy of stiffness.

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Section: Introductionmentioning

confidence: 99%

“…Cognitive and postural tasks require common cognitive mechanisms, which results in conflicts when both tasks are simultaneously performed (Bucci et al . ; Saxena et al . ).…”

Section: Introductionmentioning

confidence: 99%

Dual‐task effects on postural sway during sit‐to‐stand movement in children with Down syndrome

Pena

Pavão

Oliveira

et al. 2019

J intellect Disabil Res

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“…Several studies have investigated the role of attention and its relationship between sensory information and motor action (Andersson et al 2002;Remaud et al 2012;Siu et al 2008). Overall, the strategy adopted by these researchers was the dual-task approach, in which participants were asked to maintain an upright stance while they concomitantly performed a second task that demanded cognitive efforts, such as reading (Bucci et al 2015), visual searching (Prado et al 2007), and counting backwards (Aguiar et al 2014). Surprisingly, the performance of the postural control system decreased, which suggested that postural adjustments typically rely on attentional resources (Andersson et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Attentional artifacts in sensorimotor coupling in the postural control of young adults

et al. 2016

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Although postural control requires the integration of different sensory cues, little is known about the role of attentional artifacts on the individual's ability to properly respond to postural challenges. This study investigated the effects of concomitant tasks (cognitive and postural) on the relationship between visual information and body sway. Thirty healthy adults were asked to stand still inside of a moving room on normal and reduced bases of support. Initially, the participants were not aware of any visual manipulation and were asked to perform tasks that required concomitant attentional demands. Then, all participants were informed about the visual manipulation and were requested to resist it. The results showed that information about visual manipulation changed the coupling between visual information and body sway, but only in a less demanding task, and that it was affected by the concomitant task. The coupling between visual information and body sway for postural control does not demand attention on a regular basis, but any change in this relationship demands attention and occurs in less demanding postural tasks.

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“…The postural control system provides the ability to maintain postural orientation and stability depending on interactions between sensory systems and motor and cognitive processes (Shumway-Cook & Woollacott, 2000;Woollacott & Shumway-Cook, 2002). When young adults need to control their postural orientation simultaneously with a task that increases attentional demand and therefore requires cognitive effort, their postural control performance deteriorates (Prado, Stoffregen & Duarte, 2007;Aguiar et al, 2014;Bucci, Ajrezo & Wiener-Vacher, 2015). This suggests that postural control functioning requires attentional resources (Andersson et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

People in early stages of Parkinson’s disease are able to intentionally reweight the use of visual information for postural control

Cruz

Genoves

Doná

et al. 2020

PeerJ

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Background Parkinson’s disease (PD) leads to several changes in motor control, many of them related to informational or cognitive overload. The aim of this study was to investigate the influence of knowledge and intention on the postural control performance and on the coupling between visual information and body sway in people with and without PD standing upright. Methods Participants were 21 people with PD (62.1 ± 7.2 years), stages 1 and 2 (Hoehn & Yahr scale), under dopaminergic medication, and 21 people in the control group (62.3 ± 7.1 years). Participants stood upright inside a moving room, performing seven trials of 60 s. In the first trial, the room remained motionless. In the others, the room oscillated at 0.2 Hz in the anterior-posterior direction: in the first block of three trials, the participants were not informed about the visual manipulation; in the second block of three trials, participants were informed about the room movement and asked to resist the visual influence. An OPTOTRAK system recorded the moving room displacement and the participants’ sway. The variables mean sway amplitude (MSA), coherence and gain were calculated. Results With no visual manipulation, no difference occurred between groups for MSA. Under visual manipulation conditions, people with PD presented higher MSA than control, and both groups reduced the sway magnitude in the resisting condition. Control group reduced sway magnitude by 6.1%, while PD group reduced by 11.5%. No difference was found between groups and between conditions for the coupling strength (coherence). For the coupling structure (gain), there was no group difference, but both groups showed reduced gain in the resisting condition. Control group reduced gain by 12.0%, while PD group reduced by 9.3%. Conclusions People with PD, under visual manipulation, were more influenced than controls, but they presented the same coupling structure between visual information and body sway as controls. People in early stages of PD are able to intentionally alter the influence of visual information.

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Oculomotor tasks affect differently postural control in healthy children

Cited by 14 publications

References 41 publications

Dual‐task effects on postural sway during sit‐to‐stand movement in children with Down syndrome

Dual‐task effects on postural sway during sit‐to‐stand movement in children with Down syndrome

Attentional artifacts in sensorimotor coupling in the postural control of young adults

People in early stages of Parkinson’s disease are able to intentionally reweight the use of visual information for postural control

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