Perlman A L, Grayhack J P
Audiology/Speech Pathology Service, VA Medical Center, Iowa City, Iowa 52246.
Dysphagia. 1991;6(2):88-93. doi: 10.1007/BF02493485.
The electroglottograph (EGG) is a non-invasive, electrical impedance device that was developed for observing vocal fold contract during phonation. After a thorough study of the frequency response characteristics of the EGG, we found that the EGG output can be used to identify maximum laryngeal displacement and the duration of laryngeal movement during swallowing. With a small intranasal pressure transducer placed beneath the velum and the EGG electrodes placed externally on the thyroid cartilage, additional information on the temporal aspects of the swallow can be measured. The EGG has direct clinical application when teaching such techniques as the safe swallow and Mendelsohn maneuver and it is useful as a research technique when using repeated measures designed to study the swallow reflex.
电子声门图（EGG）是一种非侵入性的电阻抗设备，用于观察发声时声带的收缩情况。在对EGG的频率响应特性进行深入研究后，我们发现EGG输出可用于识别吞咽过程中喉部的最大位移和喉部运动的持续时间。通过在软腭下方放置一个小型鼻内压力传感器，并将EGG电极外置在甲状软骨上，可以测量出吞咽时间方面的更多信息。在教授安全吞咽和门德尔松手法等技术时，EGG具有直接的临床应用价值，并且在使用重复测量设计来研究吞咽反射时，它作为一种研究技术也很有用。
