Assessment of Upper Limb Motor Dysfunction for Children with Cerebral Palsy Based on Muscle Synergy Analysis

Muscle synergies are considered to be building blocks underlying motor behaviors. The goal of this study is to explore an objective and effective method to assess the upper limb motor dysfunction of cerebral palsy (CP) children from the aspect of muscle synergy analysis. Fourteen CP children and 10...

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Vydané v:Frontiers in human neuroscience Ročník 11; s. 130
Hlavní autori: Tang, Lu, Chen, Xiang, Cao, Shuai, Wu, De, Zhao, Gang, Zhang, Xu
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Switzerland Frontiers Research Foundation 23.03.2017
Frontiers Media S.A
Predmet:
Arm
Cerebral palsy
Children
Children & youth
Elbow
Electromyography
Gait
Kinematics
Muscles
Neuromuscular diseases
Neuromuscular system
Neuroscience
Paralysis
Physiology
Posture
Rehabilitation
Researchers
Shoulder
Studies
Walking
China
cerebral palsy
non-negative matrix factorization
electromyography
muscle synergy analysis
upper limb assessment
ISSN:1662-5161, 1662-5161
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Shrnutí:Muscle synergies are considered to be building blocks underlying motor behaviors. The goal of this study is to explore an objective and effective method to assess the upper limb motor dysfunction of cerebral palsy (CP) children from the aspect of muscle synergy analysis. Fourteen CP children and 10 typically developed (TD) children were recruited to perform three similar upper limb motion tasks related to the movements of elbow and shoulder joints, and surface electromyographic (sEMG) signals were recorded from 10 upper arm and shoulder muscles involved in the defined tasks. Non-negative matrix factorization algorithm was used to extract muscle synergies and the corresponding activation patterns during three similar tasks. For each subject in TD group, four muscle synergies were extracted in each task. Whereas, fewer mature synergies were recruited in CP group, and many abnormal synergy structures specific to CP group appeared. In view of neuromuscular control strategy differences, three synergy-related parameters were proposed and synergy structure similarity coefficient was found to have high ability in depicting the inter-subject similarity within task and the intra-subject similarity between tasks. Seven upper limb assessment ( ) metrics, which were defined as the combinations of synergy structure similarity coefficients of three tasks, were proposed to assess the upper limb motor function of CP children. The experimental results demonstrated that these metrics were able to assess upper limb motor function comprehensively and effectively. The proposed assessment method can serve as a promising approach to quantify the abnormality of muscle synergies, thus offering potential to derive a physiologically based quantitative index for assessing upper limb motor function in CP clinical diagnosis and rehabilitation.
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Reviewed by: Vincent C. K. Cheung, The Chinese University of Hong Kong, Hong Kong; Ming Wu, Rehabilitation Institute of Chicago, USA
Edited by: Sheng Li, University of Houston, USA
ISSN:1662-5161
1662-5161
DOI:10.3389/fnhum.2017.00130