Objective hearing threshold estimation in children with auditory neuropathy spectrum disorder.
Objective hearing threshold estimation in children with auditory neuropathy spectrum disorder.
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听神经病谱系障碍儿童的客观听阈估计。
DOI：
10.1002/lary.24137
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发表时间：
2013-11
期刊：
影响因子：
2.6
通讯作者：
Buchman, Craig A.
中科院分区：
文献类型：
--
作者：
He, Shuman;Teagle, Holly F. B.;Roush, Patricia;Grose, John H.;Buchman, Craig A.
结果所有受试者的CAEP反应记录在5个频率上。这些反应包括大约100 ms后出现的P1峰和N2峰。图1显示了受试者S4（上）和S2（下）分别在500 Hz（左）和2000 Hz（右）下记录的CAEP水平序列。P1峰值和刺激水平被标记为痕迹。很明显，随着刺激水平的降低，P1潜伏期有增加而振幅减小的趋势。图2显示了使用两种技术在五名受试者中测量到的相应的空气传导阈值。CAEP和行为阈值一般在500 ~ 2000 Hz之间的5 ~ 10 db范围内。250hz和4000hz的差异更大，尽管是一致的。250hz时，CAEP阈值比4000hz时的行为反应高20 ~ 25db；误差为10- 15db。
RESULTSThe CAEP responses were recorded across five frequencies from all subjects tested. These responses consisted of a P1 peak followed by a N2 peak occurring approximately 100 ms later. Figure 1 shows a CAEP level series recorded from subjects S4 (upper) and S2 (lower) at 500 Hz (left) and 2000 Hz (right), respectively. P1 peaks and stimulation levels are labeled for the traces. It is apparent that there is a tendency for P1 latencies to increase and amplitudes to decrease as stimulation level decreases. Figure 2 shows the corresponding air conduction thresholds measured in the five subjects using both techniques. Generally, CAEP and behavioral thresholds are within 5-10 dBs between 500 and 2000 Hz. The discrepancy is larger for 250 and 4000 Hz although consistent. For 250 Hz, CAEP thresholds are 20-25 dB higher than behavioral responses while at 4000 Hz; the discrepancy is 10-15 dB.
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