The effects of stroke and age on finger interaction in multi-finger force production tasks

Li, Sheng; Latash, Mark L.; Yue, Guang H.; Siemionow, Vlodek; Sahgal, Vinod

doi:10.1016/s1388-2457(03)00164-0

Cited by 90 publications

(83 citation statements)

References 48 publications

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“…Although stroke survivors show a variety of pathologic characteristics, weakness is the most prominent sign and muscle tone is generally developed from flaccid to spastic state especially in flexor muscles (Ada et al 2003;Raghavan 2007). Previous studies reported deficits in the synergistic actions between fingers during multi-finger force production, which may underlie their difficulties in object manipulation (Li et al 2003; Abstract 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.…”

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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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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“…While precise measurements of various aspects of finger motor control can be made in the laboratory (Darling et al, 1994;Lang and Schieber, 2004;Li et al, 2003), it is not clear how well these measurements correspond with utility in everyday life. The ability to monitor hand usage for extended periods of time in more natural environments could yield valuable information about the efficacy of various interventions.…”

Section: Introductionmentioning

confidence: 99%

A low cost instrumented glove for extended monitoring and functional hand assessment

Simone

Sundarrajan

Luo

et al. 2007

Journal of Neuroscience Methods

129

102

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“…However in our study NHPT scores were well correlated with pinch grip strength, not grip This seemed logical to us since NHPT involves the coordination of several fingers within a hand and/or coordinated action of fingers, not just grasping [29]. So pinch strength measure can be an indicator of fine motor function and a way much easier method.…”

Section: Discussionmentioning

confidence: 49%

Effect of Hand Dominance on Functional Status and Recovery of Hand in Stroke Patients

Sarikaya¹,

İncel²,

Yılmaz³

et al. 2017

SJCM

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Abstract:Stroke is characterized by hemiplegia, including motor deficits and various neurological manifestations mainly in contralateral half of the body lasting more than 24 hours with a presumed vascular cause. The goal of stroke rehabilitation is to make people independent and this is possible with appropriate functioning of the affected hand and upper extremity. Stroke patients have to depend on the nondominant hand when the effected hand is the dominant side. However this disadvantage might end up in better results with more effort for recovery of the dominant hand. In this study, we aimed to understand the effect of hand dominance on both functional loss and regain after stroke. 18 patients with right or left hemiplegia participated in the study. Patients were grouped as dominant side and nondominant side hemiplegic (groups D and ND). Patients were evaluated in the 1 st week, 1 st month and 3 rd month. Brunnstrom stages, Motricity index, MAS and FIM, NHPT and hand grip strength were recorded for every patient in every visit. None of the parameters showed significant difference between two groups. Only NHPT used to assess fine manual dexterity revealed a significant difference in the final analysis. Correlation analysis displayed a positive correlation between hand grip strength with FIM and pinch grip strength with NHPT. We concluded that there was no significant difference in functional improvement between dominant and non-dominant side hemiplegic groups during the first three months after stroke. However longer follow ups and larger patient groups are needed to clarify the effect of hand dominance on long term functional status.

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The effects of stroke and age on finger interaction in multi-finger force production tasks

Cited by 90 publications

References 48 publications

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

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

A low cost instrumented glove for extended monitoring and functional hand assessment

Effect of Hand Dominance on Functional Status and Recovery of Hand in Stroke Patients

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