Zimmermann G, Dalston R M, Brown C, Folkins J W, Linville R N, Seaver E J
Department of Speech Pathology and Audiology, University of Iowa, Iowa City 52242.
J Speech Hear Res. 1987 Dec;30(4):564-9. doi: 10.1044/jshr.3004.564.
This study investigated the extent to which high-speed lateral-view cineradiography and a photodetector system described by Dalston (1982) provided comparable information concerning velopharyngeal activity. We observed the production of isolated utterances and running speech for 2 subjects in three contexts. A comparison was made between the times at which the velopharyngeal port was observed by each method to begin opening, reach maximal opening, begin closing, and initially attain closure. The photodetector system was found to be sensitive to changes in velar position observed by cineradiography. The correlation between the magnitude of photodetector output and the magnitude of velar displacement from the posterior pharyngeal wall was .89 for Subject 1 and .78 for Subject 2. The lack of a perfect relation between the output of the photodetector device and movements of the velum observed by cineradiography was not unexpected given the two-dimensional limitation of lateral cineradiography and the complexity of events associated with changing port size. The significance of these findings is discussed with respect to the potential research and clinical uses of this photodetector system.
本研究调查了高速侧位电影造影术以及Dalston（1982年）描述的光电探测器系统在提供有关腭咽活动的可比信息方面的程度。我们在三种情况下观察了2名受试者的孤立发声和连续言语。对每种方法观察到腭咽口开始打开、达到最大打开、开始关闭以及最初实现闭合的时间进行了比较。发现光电探测器系统对电影造影术观察到的软腭位置变化敏感。对于受试者1，光电探测器输出幅度与软腭从咽后壁位移幅度之间的相关性为0.89，对于受试者2为0.78。鉴于侧位电影造影术的二维局限性以及与口咽腔大小变化相关事件的复杂性，光电探测器装置的输出与电影造影术观察到的软腭运动之间缺乏完美关系并不意外。针对该光电探测器系统的潜在研究和临床用途，对这些发现的意义进行了讨论。
