很多交流障碍是由于发音肌瘫痪，软弱，不协调或认知功能障碍。
There are a variety of disorders of communication that may be due to paralysis, weakness, or incoordination of the speech musculature or to cognitive impairment.
目的：探讨全喉切除发音重建中切断环咽肌与一侧咽缩肌对发音的影响。
Objective: To study the influence of amputating cricopharyngeal muscle and unilateral pharyngeal constrictor after total laryngectomy on vocal restoration.
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.
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