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find Author "吕健" 2 results
  • 培养神经外科硕士研究生的几个关键问题

    【摘要】神经外科是一门专业性极强、概念抽象、临床病理复杂多变的学科,其硕士研究生的培养是医学教育系统工程中一个重要组成部分。研究生生源、培养目标、教学方法是培养神经外科硕士研究生的几个关键问题;根据生源的差异调整教学手段、根据培养的目标调整教学计划,以期为该学科培养更多优秀人才。

    Release date:2016-09-08 09:45 Export PDF Favorites Scan
  • Fatigue analysis of upper limb rehabilitation based on surface electromyography signal and motion capture

    At present, fatigue state monitoring of upper limb movement generally relies solely on surface electromyographic signal (sEMG) to identify and classify fatigue, resulting in unstable results and certain limitations. This paper introduces the sEMG signal recognition and motion capture technology into the fatigue state monitoring process and proposes a fatigue analysis method combining an improved EMG fatigue threshold algorithm and biomechanical analysis. In this study, the right upper limb load elbow flexion test was used to simultaneously collect the biceps brachii sEMG signal and upper limb motion capture data, and at the same time the Borg Fatigue Subjective and Self-awareness Scale were used to record the fatigue feelings of the subjects. Then, the fatigue analysis method combining the EMG fatigue threshold algorithm and the biomechanical analysis was combined with four single types: mean power frequency (MPF), spectral moments ratio (SMR), fuzzy approximate entropy (fApEn) and Lempel-Ziv complexity (LZC). The test results of the evaluation index fatigue evaluation method were compared. The test results show that the method in this paper has a recognition rate of 98.6% for the overall fatigue state and 97%, 100%, and 99% for the three states of ease, transition and fatigue, which are more advantageous than other methods. The research results of this paper prove that the method in this paper can effectively prevent secondary injury caused by overtraining during upper limb exercises, and is of great significance for fatigue monitoring.

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