Mason S M
Audiology. 1984;23(3):277-96. doi: 10.3109/00206098409072840.
Auditory brainstem responses (ABRs) to click stimuli have become established as a useful indicator of hearing thresholds in infants and young children. Although the investigation is objective in so far as the patient is concerned, a subjective element remains in the decision by the operator as to whether or not an ABR is present in an averaged waveform. A simple on-line computer detection technique is described which removes some of the reliance placed upon the operator. The technique employs a scanning window for correlation and amplitude analysis of pairs of averaged ABR waveforms. The reliability and accuracy of computer and operator scoring of 25 thresholds in normally hearing adults and 50 thresholds in infants and young children with suspected hearing impairment have been investigated. In the adult group, 96% of computer estimates of the threshold were within +/- 10 dB of the subjective hearing threshold, compared with 92% for operator scoring. There were 92% of computer and operator scores within +/- 10 dB of each other. In the patient group there was equally good agreement between computer and operator scoring with 90% of the thresholds within +/- 10 dB of each other; the incidence of possible false-positive thresholds was also lower with computer scoring. This on-line scoring technique, therefore, offers useful assistance to the operator; requires only limited computing power, and is suitable for use in a routine clinical environment.
短声刺激诱发的听觉脑干反应（ABR）已成为评估婴幼儿听力阈值的一项有用指标。就患者而言，该检查是客观的，但在判断平均波形中是否存在ABR时，操作人员的决策仍存在主观因素。本文描述了一种简单的在线计算机检测技术，该技术减少了对操作人员的依赖。该技术采用扫描窗口对成对的平均ABR波形进行相关性和幅度分析。研究了正常听力成年人25个阈值以及疑似听力受损婴幼儿50个阈值的计算机评分和操作人员评分的可靠性及准确性。在成年组中，计算机对阈值的估计有96%在主观听力阈值的±10 dB范围内，而操作人员评分的这一比例为92%。计算机评分和操作人员评分有92%在彼此的±10 dB范围内。在患者组中，计算机评分和操作人员评分之间同样具有良好的一致性，90%的阈值在彼此的±10 dB范围内；计算机评分时可能出现的假阳性阈值发生率也较低。因此，这种在线评分技术为操作人员提供了有用的帮助；仅需有限的计算能力，且适用于常规临床环境。
