Brass D, Kemp D T
Institute of Laryngology and Otology, UCMSM, London, United Kingdom.
Ear Hear. 1994 Oct;15(5):371-7. doi: 10.1097/00003446-199410000-00004.
To develop a simple objective method for assessing the presence or absence of a TEOAE in recordings from neonatal ears.
Several simple, objective methods of transient evoked otoacoustic emissions (TEOAE) assessment were tested against a verified subjective assessment method, using 200 neonatal TEOAEs recorded under clinical conditions.
Total TEOAE level did not correlate well with the subjective assessment. Total estimated signal to noise ratio correlated better with the subjective assessment. Filtering the response between 1.5 and 2.8 kHz and windowing it between 4 and 10 msec did not degrade the correlation. In a normal population of neonates the filterd, windowed estimated signal to noise ratio method miscategorized only 4.0% of the responses as having no TEOAEs. None of the population without TEOAEs were categorized as having TEOAEs by the objective test.
An objective TEOAE assessment (based on the signal to noise ratio of a time limited midband section of the TEOAE) performed well at detecting the presence or absence of a TEOAE.
开发一种简单客观的方法，用于评估新生儿耳部记录中是否存在瞬态诱发耳声发射（TEOAE）。
使用在临床条件下记录的200例新生儿TEOAE，将几种简单客观的瞬态诱发耳声发射（TEOAE）评估方法与经过验证的主观评估方法进行对比测试。
TEOAE总水平与主观评估的相关性不佳。总估计信噪比与主观评估的相关性更好。对1.5至2.8kHz之间的反应进行滤波，并在4至10毫秒之间加窗，并不会降低相关性。在正常新生儿群体中，经过滤波和加窗处理的估计信噪比方法将只有4.0%的反应错误分类为无TEOAE。客观测试未将任何无TEOAE的群体分类为有TEOAE。
一种客观的TEOAE评估方法（基于TEOAE限时中频部分的信噪比）在检测TEOAE的存在与否方面表现良好。
