文章基本信息

标题：Muscle networks: Connectivity analysis of EMG activity during postural control
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作者：Tjeerd W. Boonstra ; Alessander Danna-Dos-Santos ; Hong-Bo Xie 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2016
卷号：5
期号：1
DOI：10.1038/srep17830
语种：English
出版社：Springer Nature
摘要：Understanding the mechanisms that reduce the many degrees of freedom in the musculoskeletal system remains an outstanding challenge. Muscle synergies reduce the dimensionality and hence simplify the control problem. How this is achieved is not yet known. Here we use network theory to assess the coordination between multiple muscles and to elucidate the neural implementation of muscle synergies. We performed connectivity analysis of surface EMG from ten leg muscles to extract the muscle networks while human participants were standing upright in four different conditions. We observed widespread connectivity between muscles at multiple distinct frequency bands. The network topology differed significantly between frequencies and between conditions. These findings demonstrate how muscle networks can be used to investigate the neural circuitry of motor coordination. The presence of disparate muscle networks across frequencies suggests that the neuromuscular system is organized into a multiplex network allowing for parallel and hierarchical control structures.