Phonation threshold flow in elongated excised larynges
Phonation threshold flow in elongated excised larynges
复制标题
DOI：
10.1177/000348940811700714
复制
发表时间：
2008-07-01
影响因子：
1.4
通讯作者：
Pauls, Steven
中科院分区：
文献类型：
--
作者：
Jiang, Jack J.;Regner, Michael F.;Pauls, Steven
目标：本研究提出使用声音空气动力学的新参数，即发声阈值流量（PTF）。将PTF和发声阈压(PTP)的灵敏度与声带伸长与生理长度的百分比进行定量比较。方法：将10只切除的犬喉安装在能够控制声带伸长的台式装置上。声门下气流逐渐增加直至开始发声。声带伸长范围为+0%（生理长度）至+15%，并测量 PTF 和 PTP。结果：生理声带长度的平均 PTF 范围为 101 至 217 mL/s。未发现喉部大小与测量的 PTF 值之间存在统计学上的显着关系 (p =.404)。与伸长幅度相比，PTF 的平均变化百分比被发现具有统计显着性 (p
Objectives: This study proposes the use of a new parameter of vocal aerodynamics, phonation threshold flow (PTF). The sensitivities of the PTF and the phonation threshold pressure (PTP) were quantitatively compared to the percent of vocal fold elongation from physiologic length.Methods: Ten excised canine larynges were mounted on a bench apparatus capable of controlling vocal fold elongation. Subglottal airflow was gradually increased until the onset of phonation. Elongation of the vocal folds was varied from +0% (physiologic length) to +15%, and the PTF and PTP were measured.Results: The mean PTFs at physiologic vocal fold length ranged from 101 to 217 mL/s. No statistically significant relationship was found to exist between the size of the larynx and the measured PTF values (p =.404). The average percent change of PTF compared to the magnitude of elongation was found to be statistically significant (p