CAJ | 학술논문

目的通过对上肢肌群肌肉轻收缩时肌电信号的检测与分析，提供电子假肢信号源。方法对60例正常人，用表面电极分别测定上肢四组拮抗肌（前臂屈肌——前臂伸肌，肱二头肌——肱三头肌，三角肌——胸大肌，冈下肌——背阔肌）在轻收缩时的肌电信号，并分析其频率与波幅。结果上肢四组拮抗肌在肌肉轻收缩时，肌电信号频率集中在85 ～ 150 Hz，波幅集中在220 ～ 250 V。结论采用频率85 ～ 150 Hz，波幅220 ～ 250 V的肌电信号作为电子假肢信号源，可提高肌电信号实时性及假肢的实用性。
목적통과대상지기군기육경수축시기전신호적검측여분석，제공전자가지신호원。방법대60례정상인，용표면전겁분별측정상지사조길항기（전비굴기——전비신기，굉이두기——굉삼두기，삼각기——흉대기，강하기——배활기）재경수축시적기전신호，병분석기빈솔여파폭。결과상지사조길항기재기육경수축시，기전신호빈솔집중재85 ～ 150 Hz，파폭집중재220 ～ 250 V。결론채용빈솔85 ～ 150 Hz，파폭220 ～ 250 V적기전신호작위전자가지신호원，가제고기전신호실시성급가지적실용성。
Objective　To provide myoelectric signal of electronic artificial limb via examination and assessment of the myoelectric signals given by upper extremity muscles in light contraction.　Methods　60 normal human adults were included in the study. Myoelectric signals of four pairs of antagonists of the upper limb (forearm flexors - extensors, brachial biceps brachii - triceps brachii, deltoid - pectoralis major, infraspinatus - latissimus dorsi) in light contraction were recorded by using surface electrode. Frequency and amplitude of the signals was analyzed.　Results　 When the four pairs of antagonists were in light contraction, the frequency and amplitude of the myoelectric signals centralized in 85 - 150 Hz and 220 - 250 uV respectively.　Conclusions　The artificial limb equipped with myoelectric signals with frequency of 85 - 150 Hz and amplitude of 220 - 250 uV can increase real time of the myoelectric signal and practicability.