Kato T, Shiraishi K, Imamura A, Kimura K, Morizono T, Soda T
Department of Otorhinolaryngology, School of Medicine, Fukuoka University, Japan.
Auris Nasus Larynx. 1995;22(2):96-102. doi: 10.1016/s0385-8146(12)80107-6.
The auditory brainstem responses (ABRs) obtained from 28 normal healthy adults were studied using the ipsilateral and contralateral recordings from the positions of vertex and each mastoid to monaural stimulation. Each wave of ABRs recorded by ipsilateral and contralateral derivations to stimulation site showed slightly significantly differences. Comparing the ipsilateral and contralateral data, the latencies of waves II and V showed a slightly small reduction in the ipsilateral recording, while these of waves III and IV showed a small increase. Next, the distributions of potentials and latencies of waves II to V were investigated from ABRs situating different electrodes in mid-coronal array of the scalp and non-cephalic reference electrode on the seventh cervical vertebra (CVII). The results of latencies showed the reverse relation to the data obtained from the ipsilateral and contralateral recordings using the reference electrodes on each mastoid. These facts suggest that the comparable differences of latencies in the bilaterally recorded ABRs are explained by the pseudo-phenomena of differential recordings, which the phase delayed or advanced potential propagated to each mastoid being reference electrode position.
对28名正常健康成年人进行听觉脑干反应（ABR）研究，采用单耳刺激时从头顶和每个乳突位置进行同侧和对侧记录。刺激部位同侧和对侧导联记录的ABR各波显示出略有显著差异。比较同侧和对侧数据，同侧记录中波II和波V的潜伏期略有缩短，而波III和波IV的潜伏期略有延长。接下来，从位于头皮中冠状阵列不同电极和第七颈椎（CVII）非头部参考电极的ABR中研究波II至波V的电位和潜伏期分布。潜伏期结果与使用每个乳突上的参考电极进行同侧和对侧记录获得的数据呈相反关系。这些事实表明，双侧记录的ABR中潜伏期的可比差异可通过差异记录的伪现象来解释，即相位延迟或提前的电位传播到每个作为参考电极位置的乳突。
