Difference of motor overflow depending on the impaired or unimpaired hand in stroke patients

Kim, Yushin; Kim, Woo-Sub; Shim, Jae Kun; Suh, Dong Won; Kim, Tae Yeong; Yoon, Bum Chul

doi:10.1016/j.humov.2014.11.007

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…One study showed bimanual interactions during bimanual task-related force production among healthy participants (Serrien & Wiesendanger, 2001), which indicated neural interactions during bimanual force controls. Furthermore, evidence from patients with stroke revealed that motor overflow between hemispheres would alter the independence of force production between the two hands (Kim et al, 2015; Seo, 2013). Previous studies have extensively explored that, during bimanual coordination control, interactions through the corpus callosum (Diedrichsen, Hazeltine, Nurss, & Ivry, 2003; Gooijers & Swinnen, 2014), neural crosstalk, and co-activation of homologous muscles (Kennedy, Boyle, Wang, & Shea, 2016) might in part account for the independence between the force production of the hands.…”

Section: Introductionmentioning

confidence: 99%

Motor control strategies during bimanual isometric force control among healthy individuals

Yan

Kim

et al. 2019

Adaptive Behavior

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This study aimed to provide a basic description of the motor control strategy during bimanual isometric force control in healthy young adults. Thirty healthy young adults (mean age: 27.4 6 3.7 years) participated in the study. The subjects were instructed to press both hands simultaneously to match the target force level of 5%, 25%, and 50% bimanual maximum voluntary force using continuous visual feedback. Bimanual motor synergy and bimanual coordination, as well as force asymmetry, force accuracy, and force variability were compared. This study identified the specific motor control strategy of healthy young adults during bimanual isometric force control, indicating that they proportionally increased ''good'' and ''bad'' variabilities, resulting in comparable bimanual motor synergy as the target force level increased.

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Section: Introductionmentioning

confidence: 99%

Motor control strategies during bimanual isometric force control among healthy individuals

Yan

Kim

et al. 2019

Adaptive Behavior

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“…Taskirrelevant sources of variability in individual finger force et al 2014). Furthermore, it has been shown that the deficits in hand and finger control can negatively influence overall function of ipsilateral arm (Lodha et al 2010;Miller and Dewald 2012) as well as the independence between hands (Kim et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Deficits in motor abilities for multi-finger force control in hemiparetic stroke survivors

Kim

Koh

et al. 2016

Exp Brain Res

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The ability to control redundant motor effectors is one of hallmarks in human motor control, and the topic has been studied extensively over several decades since the initial inquiries proposed by Nicholi Bernstein. However, our understanding of the influence of stroke on the control of redundant motor systems is very limited. This study aimed to investigate the effect of stroke-related constraints on multi-finger force control abilities in a visuomotor task. Impaired (IH) and less-impaired hands (LH) of 19 hemiparetic stroke survivors and 19 age-matched control subjects were examined. Each hand repeatedly produced isometric forces to match a target force of 5 N shown on a computer screen using all four fingers. The hierarchical variability decomposition (HVD) model was used to separate force-matching errors (motor performance) into task-relevant measures (accuracy, steadiness, and reproducibility). Task-irrelevant sources of variability in individual finger force profiles within and between trials (flexibility and multiformity) were also quantified. The IH in the stroke survivors showed deficits in motor performance attributed mainly to lower accuracy and reproducibility as compared to control hands (p < 0.05). The LH in stroke survivors showed lower reproducibility and both hands in stroke also had higher multiformity than the control hands (p < 0.05). The findings from our HVD model suggest that accuracy, reproducibility, and multiformity were mainly impaired during force-matching task in the stroke survivors. The specific motor deficits identified through the HVD model with the new conceptual framework may be considered as critical factors for scientific investigation on stroke and evidence-based rehabilitation of this population.

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“…However, recent evidence has shown that bimanual activities are vulnerable to interference and not independent of each other (Kim et al, 2015;Seo, 2013). Evidence showed that interactions among the corpus callosum (Diedrichsen, Hazeltine, Nurss, & Ivry, 2003;Gooijers & Swinnen, 2014), neural crosstalk, and coactivation of homologous muscles (Kennedy, Boyle, Wang, & Shea, 2016) might partly account for the independence between the two hands during bimanual coordination force control.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies that emphasized the motor control mechanism of bimanual coordination force control used force accuracy and variability to evaluate performance, under the assumption of independent control between the hands (Davis, 2007; Hu, Loncharich, & Newell, 2011; Lodha, Coombes, & Cauraugh, 2012). However, recent evidence has shown that bimanual activities are vulnerable to interference and not independent of each other (Kim et al, 2015; Seo, 2013). Evidence showed that interactions among the corpus callosum (Diedrichsen, Hazeltine, Nurss, & Ivry, 2003; Gooijers & Swinnen, 2014), neural crosstalk, and co-activation of homologous muscles (Kennedy, Boyle, Wang, & Shea, 2016) might partly account for the independence between the two hands during bimanual coordination force control.…”

Section: Introductionmentioning

confidence: 99%

Effects of aging on motor control strategies during bimanual isometric force control

et al. 2019

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Aging-induced degeneration of the neuromuscular system would result in deteriorated complex muscle force coordination and difficulty in executing daily activities that require both hands. The aim of this study was to provide a basic description of how aging and dual-task activity would affect the motor control strategy during bimanual isometric force control in healthy adults. In total, 17 young adults (aged 25.1 ± 2.4 years) and 14 older adults (aged 72.6 ± 3.4 years) participated in the study. The subjects were instructed to press both hands simultaneously to match the 1 Hz sine curve force under two conditions (with or without calculation) with continuous visual feedback. Differences in bimanual motor synergy, bimanual coordination, force accuracy, force variability, and calculation speed were compared. This study found that the specific motor control strategy of older adults involved a decreased bimanual force control ability with both increased VUCM and VORT, and was not influenced by dual tasking. These findings might have implications for establishing interventions for aging-induced hand force control deficits.

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Difference of motor overflow depending on the impaired or unimpaired hand in stroke patients

Cited by 10 publications

References 29 publications

Motor control strategies during bimanual isometric force control among healthy individuals

Motor control strategies during bimanual isometric force control among healthy individuals

Deficits in motor abilities for multi-finger force control in hemiparetic stroke survivors

Effects of aging on motor control strategies during bimanual isometric force control

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