Stach B A, Jerger J F
Ear Hear. 1984 Sep-Oct;5(5):289-96. doi: 10.1097/00003446-198409000-00005.
Signal averaging techniques have been applied to acoustic reflex measurement in order to meet the need for better temporal resolution and more accurate threshold delineation. We describe an approach to reflex measurement based on a signal averaging technique designed to examine both threshold and suprathreshold characteristics of the acoustic reflex. Results indicate that: (1) many supposed reflex threshold and latency aberrations are actually amplitude aberrations that are inappropriately classified because of instrumentation constraints; (2) reflex amplitude and waveform morphology can be recorded with appropriate fidelity using a signal averaging technique; (3) problems due to absolute amplitude variability can be minimized by using an index technique to assess amplitude relationships; (4) amplitude indices are sensitive indicators of neural pathology; (5) signal averaging and suprathreshold measurement of reflex amplitude and waveform morphology promise to enhance the sensitivity of acoustic reflex measurement.
为了满足对更好的时间分辨率和更精确的阈值描绘的需求，信号平均技术已应用于声反射测量。我们描述了一种基于信号平均技术的反射测量方法，该技术旨在检查声反射的阈值和阈上特征。结果表明：（1）许多所谓的反射阈值和潜伏期异常实际上是幅度异常，由于仪器限制而被不恰当地分类；（2）使用信号平均技术可以以适当的保真度记录反射幅度和波形形态；（3）通过使用指数技术评估幅度关系，可以将由于绝对幅度变化引起的问题降至最低；（4）幅度指数是神经病理学的敏感指标；（5）信号平均以及反射幅度和波形形态的阈上测量有望提高声反射测量的灵敏度。
