Quantitative features of myoelectric signals in the orbicularis oculi muscle during different motion states

查看全文 作　　者：Dongyue [1]Xu;Keyong [1]Li;Jingquan [2]Liu;Yujuan [1]Wang;Yuefeng [2]Rui

机构地区：[1]Department of Otolaryngology, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200080, China;[2]Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Neural Regeneration Research》索引2010年第5卷第24期,共5页

基　　金：the National Natural Science Foundation of China,No.60876082,81070779;the grant from Shanghai Committee of Science and Technology,No.0852nm06600;the 'Shu Guang' Project supported by Shanghai Municipal Educa-tion Commission and Shanghai Education Devel-opment Foundation,No.08SG13 摘　　要：Artificial facial nerve prostheses are thought to restore eye-closed function in peripheral facial paralysis patients. At present,however,there is no adequate quantitative or qualitative information regarding myoelectric signal(MES) features for healthy orbicularis oculi muscle(OOM) . The present study analyzed MES features of normal OOM in rabbits during the natural continuous eye-opening(N1) state,natural continuous eye-closing(N2) state,natural blink(N3) state,and evoked eye-closing(E) state according to time domain and frequency domain analysis. Results showed that OOM electrical activities in N1 and N2 states,as well as myoelectric amplitude,were low and stable. Nevertheless,during N3 and E states,OOM electrical activities were significantly increased and amplitude was much higher in the E state than in the N3 state. In the time domain,differences in MES peak absolute potential were not significant between N1 and N2 states. In the frequency domain,differences in power spectral density peak frequency of electromyogram signals were significant between two sets of four OOM movement states. These results suggest that OOM significantly contracts and induces eyelid-closing action. In addition,OOM is diastolic during the N1 state. A N2 state does not require continuous intensive OOM contraction. Moreover,distinctions of quantitative information in time and frequency domain features of MES can be used as an OOM reference to identify muscle movement patterns. 关键词：运动状态肌电信号数量特征讯号频域特征 OOM 功率谱密度 MES

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Quantitative features of myoelectric signals in the orbicularis oculi muscle during different motion states

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