A Pilot Study on Cortical Auditory Evoked Potentials in Children: Aided CAEPs Reflect Improved High-Frequency Audibility with Frequency Compression Hearing Aid Technology.
A Pilot Study on Cortical Auditory Evoked Potentials in Children: Aided CAEPs Reflect Improved High-Frequency Audibility with Frequency Compression Hearing Aid Technology.
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DOI：
10.1155/2012/982894
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发表时间：
2012
影响因子：
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通讯作者：
Scollie S
中科院分区：
文献类型：
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作者：
Glista D;Easwar V;Purcell DW;Scollie S
背景。本研究调查了是否可以使用临床测试设备可靠地记录和解释皮质听觉诱发电位 (CAEP)，以评估助听器技术对 CAEP 的影响。 方法。该研究包括 15 名听力正常 (NH) 和 5 名听力受损 (HI) 儿童。 NH 儿童在无人帮助的情况下接受测试； HI 儿童在佩戴助听器时接受测试。 CAEP 是通过超阈值水平的突发音调诱发的。 CAEP 的存在/不存在是根据两个独立评估者之间的协议确定的。 结果。当测量刺激处于可听级别时，对大多数 NH 听众和所有 HI 听众解释当前波形。与年龄较大的儿童相比，年龄较小的 NH 儿童被发现具有显着不同的波形形态，总平均波形在时间窗口的后半部分（N2 响应）有所不同。结果表明，在一些儿童中，频率压缩助听器处理提高了特定频率的可听度，从而导致 HI 儿童的可检测皮质反应率增加。结论。这些发现为使用 CAEP 测量助听器效益提供了支持。需要进一步的研究来验证更大的 HI 参与者群体和基于语音的刺激的辅助结果。
Background. This study investigated whether cortical auditory evoked potentials (CAEPs) could reliably be recorded and interpreted using clinical testing equipment, to assess the effects of hearing aid technology on the CAEP. Methods. Fifteen normal hearing (NH) and five hearing impaired (HI) children were included in the study. NH children were tested unaided; HI children were tested while wearing hearing aids. CAEPs were evoked with tone bursts presented at a suprathreshold level. Presence/absence of CAEPs was established based on agreement between two independent raters. Results. Present waveforms were interpreted for most NH listeners and all HI listeners, when stimuli were measured to be at an audible level. The younger NH children were found to have significantly different waveform morphology, compared to the older children, with grand averaged waveforms differing in the later part of the time window (the N2 response). Results suggest that in some children, frequency compression hearing aid processing improved audibility of specific frequencies, leading to increased rates of detectable cortical responses in HI children. Conclusions. These findings provide support for the use of CAEPs in measuring hearing aid benefit. Further research is needed to validate aided results across a larger group of HI participants and with speech-based stimuli.