用8条中国犬在手术麻醉下对环甲肌进行电生理实验。
Chinese dogs were utilized for electrophyasiologyic experiment of the cricothyreoideus.
结果表明：随着发音频率的升高，环甲肌及甲杓肌的电活动逐渐增强。
The result showed that:As the frequency increased, the activity of CT and TA was increased.
环杓侧肌、环杓后肌、甲杓间和杓间肌经常受侵；
Lateral cricoarytenoid muscle, posterior cricoarytenoid one, thyroarytenoid and interarytenoid ones were often invaded.
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