Glottal Aerodynamic Measures in Women With Phonotraumatic and Nonphonotraumatic Vocal Hyperfunction
Glottal Aerodynamic Measures in Women With Phonotraumatic and Nonphonotraumatic Vocal Hyperfunction
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DOI：
10.1044/2017_jslhr-s-16-0337
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发表时间：
2017-08-01
影响因子：
2.6
通讯作者：
Hillman, Robert E.
中科院分区：
文献类型：
--
作者：
Espinoza, Victor M.;Zanartu, Matias;Hillman, Robert E.
目的：本研究的目的是验证初步报告的有效性，这些报告表明声门空气动力学测量可以识别声带损伤和非声带损伤的发声功能亢进的病理生理发声机制，这两种发声功能明显不同于正常发声功能。方法：使用带口内压导管的气动面罩对16例器质性声带病变、16例肌张力发音障碍和2例正常嗓音的匹配对照组进行声门空气动力学测量(声门下气压、峰峰值气流、最大流量下降率和开放商)。受试者产生/pae/音节串，在/ae/元音期间使用反滤波来估计声门气流，并在/p/闭合期间估计声门下压力。对所有指标进行声压级(SPL)归一化，并对患者组和对照组之间的差异进行统计学检验。结果：声音创伤组的所有SPL归一化指标均显著低于其对照组。结论：本研究结果证实了前人的假设和初步结果，声门空气动力学指标可用于描述声带损伤和非声带损伤发声功能亢进的不同病理生理发声机制。
Purpose: The purpose of this study was to determine the validity of preliminary reports showing that glottal aerodynamic measures can identify pathophysiological phonatory mechanisms for phonotraumatic and nonphonotraumatic vocal hyperfunction, which are each distinctly different from normal vocal function.Method: Glottal aerodynamic measures (estimates of subglottal air pressure, peak-to-peak airflow, maximum flow declination rate, and open quotient) were obtained noninvasively using a pneumotachograph mask with an intraoral pressure catheter in 16 women with organic vocal fold lesions, 16 women with muscle tension dysphonia, and 2 associated matched control groups with normal voices. Subjects produced /pae/ syllable strings from which glottal airflow was estimated using inverse filtering during /ae/ vowels, and subglottal pressure was estimated during /p/ closures. All measures were normalized for sound pressure level (SPL) and statistically tested for differences between patient and control groups.Results: All SPL-normalized measures were significantly lower in the phonotraumatic group as compared with measures in its control group. For the nonphonotraumatic group, only SPL-normalized subglottal pressure and open quotient were significantly lower than measures in its control group.Conclusions: Results of this study confirm previous hypotheses and preliminary results indicating that SPL-normalized estimates of glottal aerodynamic measures can be used to describe the different pathophysiological phonatory mechanisms associated with phonotraumatic and nonphonotraumatic vocal hyperfunction.