Laryngeal electromyographic responses to perturbations in voice pitch auditory feedback
Laryngeal electromyographic responses to perturbations in voice pitch auditory feedback
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DOI：
10.1121/1.3575593
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发表时间：
2011-06-01
影响因子：
2.4
通讯作者：
Larson, Charles R.
中科院分区：
文献类型：
--
作者：
Liu, Hanjun;Behroozmand, Roozbeh;Larson, Charles R.
本研究旨在验证喉内肌参与对音高听觉反馈扰动产生语音基频（F-0）反应的假设。环甲肌和甲杓肌的肌电图（EMG）记录是用钩线电极进行的，而受试者在三个不同的语音F-0水平（对话，高音在头部注册，假声注册）持续元音发声，并在他们的语音听觉反馈中接受随机音高变化（+/- 100或+/- 300美分）。从刺激开始到EMG和语音F-0响应峰值的中位潜伏期分别为167和224 ms。在三个不同的F-0水平，假声寄存器产生的补偿性肌电反应，发生在发声反应和增加沿着上升的声音F-0响应和下降的F-0响应。对于会话和高的声音水平，EMG响应时间比假声更易变，并且与声音响应相关的EMG活动的变化并不遵循假声条件下观察到的一致趋势。假声条件下的数据表明，环甲肌和甲杓肌都参与了对音高变化的声音反馈产生补偿性声音反应。(C)2011年美国声学学会。[DOI 10.1121/1.3575593]
The present study was conducted to test the hypothesis that intrinsic laryngeal muscles are involved in producing voice fundamental frequency (F-0) responses to perturbations in voice pitch auditory feedback. Electromyography (EMG) recordings of the cricothyroid and thyroarytenoid muscles were made with hooked-wire electrodes, while subjects sustained vowel phonations at three different voice F-0 levels (conversational, high pitch in head register, and falsetto register) and received randomized pitch shifts (+/- 100 or +/- 300 cents) in their voice auditory feedback. The median latencies from stimulus onset to the peak in the EMG and voice F-0 responses were 167 and 224 ms, respectively. Among the three different F-0 levels, the falsetto register produced compensatory EMG responses that occurred prior to vocal responses and increased along with rising voice F-0 responses and decreased for falling F-0 responses. For the conversational and high voice levels, the EMG response timing was more variable than in the falsetto voice, and changes in EMG activity with relevance to the vocal responses did not follow the consistent trend observed in the falsetto condition. The data from the falsetto condition suggest that both the cricothyroid and thyroarytenoid muscles are involved in generating the compensatory vocal responses to pitch-shifted voice feedback. (C) 2011 Acoustical Society of America. [DOI: 10.1121/1.3575593]