Cortical auditory evoked potentials in the assessment of auditory neuropathy: Two case studies
Cortical auditory evoked potentials in the assessment of auditory neuropathy: Two case studies
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DOI：
10.3766/jaaa.18.5.3
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发表时间：
2007-05-01
影响因子：
1.2
通讯作者：
Dillon, Harvey
中科院分区：
文献类型：
--
作者：
Pearce, Wendy;Golding, Maryanne;Dillon, Harvey
通过实施听力筛查计划，在很小的年龄就发现了患有听神经病和可能听力障碍的婴儿。诊断通常是基于耳蜗功能正常但脑干功能异常的证据。在给婴儿开放大处方时，这种正常脑干功能的缺乏是非常有问题的，因为处方公式需要输入听力阈值，而听力阈值通常是根据听觉脑干对音调刺激的反应来估计的。如果没有这些信息，最终的试衣将会有很大的不确定性。然而，皮层听觉诱发电位仍然可以明显和可靠地记录到在对话水平上呈现的语音刺激。两个婴儿的案例研究展示了如何利用这些高阶电生理反应在一些患有听神经病的婴儿的听力学处理中。
Infants with auditory neuropathy and possible hearing impairment are being identified at very young ages through the implementation of hearing screening programs. The diagnosis is commonly based on evidence of normal cochlear function but abnormal brainstem function. This lack of normal brainstem function is highly problematic when prescribing amplification in young infants because prescriptive formulae require the input of hearing thresholds that are normally estimated from auditory brainstem responses to tonal stimuli. Without this information, there is great uncertainty surrounding the final fitting. Cortical auditory evoked potentials may, however, still be evident and reliably recorded to speech stimuli presented at conversational levels. The case studies of two infants are presented that demonstrate how these higher order electrophysiological responses may be utilized in the audiological management of some infants with auditory neuropathy.