一、引言从一般和特殊的肌松弛到肌肉功能不良的恢复,目前正在日益广泛地应用肌电生物反馈来做物理治疗。生物反馈普遍都具备反馈环路,其中一种反馈环路,叫做摸拟音调(听觉的)反馈。方法是将肌电信号处理,转换为随肌电信号变化的直流电压,再去驱动一个音频振荡器,用声音完成病人的反馈。声音的频率(或常用的“咔嗒”声的节律)与肌电的平均值成正比。在许多批量生产的生物反馈仪中,已采用的另一种反馈方式,能使用分辨阈方法实现定型学习(shaped learning)。用这种反馈治疗时,由治疗医生选取一个肌电值作为训练目标,肌电值超过它时,仪器就发出 I. INTRODUCTION The general and special muscle relaxation to the recovery of muscular dysfunction is currently being increasingly used as a physiotherapy for myoelectric biofeedback. Biofeedback generally has a feedback loop, one of which is a feedback loop called a simulated pitch (auditory) feedback. The method is to EMG signal processing, with the DC signal changes with the EMG signal, and then to drive an audio oscillator, the sound to complete the patient’s feedback. The frequency of the sound (or the usual “click” rhythm) is proportional to the average EMG. Another feedback method that has been adopted in many mass-produced biofeedback instruments enables the use of resolution threshold methods for shaped learning. With this feedback treatment, the treating physician selects a myoelectric value as the training target and when the EMG exceeds it, the instrument issues