AUTOMATED TWO-EAR HEARING TESTING FOR INFANTS

第一阶段的具体目标是开发软件程序以 同时实现了两种听力阈值估计方法 获取两个听力图，每只耳朵一个，并开发VRA- 基于行为训练和测试技术，允许婴儿 对通过INSERT呈现的声音做出准确可靠的响应 耳机。将开发两种新算法，CAST-2和OHTA-2， 根据它们的同名，CAST(听力图分类，按 顺序测试)和OHTA(优化听力测试算法) 最初是为声场测试而开发的。在第一阶段， 将编写独立的听力测试版本，并在计算机上进行测试 在人类婴儿身上进行模拟和试验。新的算法将是 比较1)与独立左派和左派的门槛协议 右耳测试和2)测试两只耳朵的时间 独立测试。 在第二阶段，每一种算法都将在一个大的和不同的 儿童人口包括：1)接受筛查的高危婴儿 在新生儿托儿所有ABR和/或耳声发射，2)正常儿童在 儿科实践，以及3)儿童转诊至耳鼻咽喉科 市一家大型医院的科室。获得独立的耳测听图 将IVRA与婴儿听力的其他测量进行比较(例如， ABR、导纳、OAE)。

The specific aims of Phase I are to develop software programs to implement two methods of hearing threshold estimation that simultaneous acquisition of two audiograms, one from each ear, and to develop VRA- based behavioral training and testing techniques that allow infants to respond with accuracy and reliability to sounds presented via insert earphones. Two new algorithms will be developed, CAST-2 and OHTA-2, based on their namesakes, CAST (Classification of Audiograms by Sequential Testing) and OHTA (Optimized Hearing Test Algorithm) which were developed originally for sound-field testing. During Phase I, the independent ear-test versions will be written, tested with computer simulation and piloted with human infants. The new algorithms will be compared in terms of 1) threshold agreement with independent left and right ear tests and 2) time for testing two ears with time for independent tests. In Phase II, each of the algorithms will be tested on a large and varied population of children including: 1) high-risk infants who were screened with ABR and/or OAE in a newborn nursery, 2) normal children in a pediatric practice, and 3) children referred to an otolaryngology department of a large city hospital. Independent ear audiograms obtained with IVRA will be compared to other measures of infant hearing (e.g., ABR, immittance, OAE).