Decker T N, Howe S W
J Acoust Soc Am. 1981 Apr;69(4):1084-90. doi: 10.1121/1.385687.
A recently developed technique to demonstrate binaural interaction in brainstem auditory electrical responses was systematically investigated. From analysis of the BSERs of eight normal hearing adults, it was found that variations in binaural interaction difference traces are related to an artificial relationship created by this technique between the true binaural and summed monaural waveforms. The present investigation employed a refinement of the binaural interaction technique whereby left and right monaural waveforms were subtracted individually from the binaural waveform to produce a difference trace. Analysis revealed that variations in the difference trace morphology are related to dependence of binaural latencies on left or right auditory tract preference in the brainstem auditory pathways. Within the subject population, 50% demonstrated an auditory tract preference for binaural latencies while 50% showed no preference. It was concluded that the difference trace is mathematically predictable from the morphological differences between the binaural and monaural waveforms and that a more accurate representation of binaural interaction can be obtained from a comparison of individual monaural waveforms within the binaural trace.
对一种最近开发的用于展示脑干听觉电反应中双耳相互作用的技术进行了系统研究。通过对八名听力正常的成年人的脑干听觉电反应（BSERs）进行分析，发现双耳相互作用差异轨迹的变化与该技术在真实双耳波形和单耳波形总和之间建立的人为关系有关。本研究采用了一种改进的双耳相互作用技术，即从双耳波形中分别减去左、右单耳波形以产生差异轨迹。分析表明，差异轨迹形态的变化与脑干听觉通路中双耳潜伏期对左或右听觉传导通路偏好的依赖性有关。在受试人群中，50%表现出对双耳潜伏期的听觉传导通路偏好，而50%没有偏好。得出的结论是，差异轨迹可从双耳波形和单耳波形之间的形态差异进行数学预测，并且通过比较双耳轨迹内的各个单耳波形可以获得更准确的双耳相互作用表示。
