痉挛肌电刺激疗法的频率和波宽分别为 A.频率0.66~1Hz,波宽0.1~0.

恬恬2020-05-20  10

问题 痉挛肌电刺激疗法的频率和波宽分别为A.频率0.66~1Hz,波宽0.1~0.5msB.频率1~100Hz,波宽0.1~1msC.频率0.66~1Hz,波宽0.01~0.2msD.频率0.66~1Hz,波宽0.1~1msE.频率2~160Hz,波宽0.1~1ms

选项

答案A

解析痉挛肌电刺激法是将波宽(0.1~0.5ms)与频率(0.66~1Hz)相同而出现时间有先后(0.1~0.3s)的两组方波,分别刺激痉挛肌及其拮抗肌,使二者交替收缩。故选A。
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