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目的基于用神经功能性电刺激的方法恢复面瘫患者闭眼功能的需要,研究健侧眼轮匝肌的功能作用状态的实时识别方法,以期能将其作为控制信号,调控对患侧眼轮匝肌的功能性电刺激。方法通过植入式微电极提取狗眼轮匝肌的肌电信号,分析眼轮匝肌在不同功能状态下肌电信号表现的差异性,以探索眼轮匝肌功能状态的实时识别方法。结果眼轮匝肌在收缩时的肌电信号相对于舒张状态有幅值显著增加的特点,基于这种特征,我们采用了一种带延迟判断的幅度阈值方法,对信号进行实时分析,以接近于同步的方式识别出了眼轮匝肌收缩动作的发生。结论可以通过对眼轮匝肌肌电信号实时分析的方法,监控眼轮匝肌的功能状态,从而监控闭眼动作的发生。
Objective Based on the need of neurofunctional electrical stimulation to restore the ophthalmic function in patients with facial paralysis, the method of real-time recognition of the functional state of the orbicularis oculi muscle was studied in order to be used as a control signal to control the ophthalmic wheel rim Muscular functional electrical stimulation. Methods The EMG of dog’s orbicularis oculi muscle was extracted by implanted microelectrode and the difference of EMG performance under different functional state was analyzed to explore the real-time identification of orbicularis oculi muscle functional status. Results Orbicularis muscle in contractile EMG amplitude relative to the state has a significant increase in diastolic, based on this feature, we have adopted a method of amplitude threshold with delay to determine the signal in real time to close to Synchronous way to identify the orbicularis muscle contraction occurred. Conclusion The eye orbicularis muscle can be monitored by monitoring the orbicularis oculi muscle by monitoring the orbicularis muscle EMG in real time.