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Cortical auditory evoked potentials in children using hearing aids

机译：使用助听器的儿童的皮质听觉诱发电位

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摘要

Cortical auditory evoked potentials (CAEPs) are considered the electrophysiological equivalent of the pure tone audiogram (PTA) and can be used to assess the functional consequences of auditory deprivation and hearing aid acclimatization. Objectives: Threshold estimation and central auditory system evaluation in normal hearing children and those with hearing loss using cortical auditory evoked potentials. Study design: This work involved two groups: GI (20 normal hearing children) and GII (36 children with moderately-severe flat sensorineural hearing loss. The second group was divided into two subgroups: GIIa (20 children fitted with hearing aids) and GIIb (16 children not yet fitted with a hearing aid). Methodology: Basic audiological evaluation and CAEPs using speech and tone stimuli were performed and compared. The latencies and amplitude of different CAEP components were compared between both groups at the same sensation level. Results: GIIb showed a larger difference at 500 Hz compared to other frequencies, in contrast to GI and GIIa. CAEP latencies were significantly delayed in GIIb compared to GI or GIIa but CAEP amplitude showed no significant difference. Conclusions: Tone or speech evoked-cortical potentials can be used for threshold estimation in children with a high degree of consistency across different frequencies. Hearing aids can impact on cortical processing of simple or complex stimuli.
机译：皮层听觉诱发电位（CAEP）被认为是纯音听力图（PTA）的电生理等效物，可用于评估听觉剥夺和助听器适应的功能后果。目的：利用皮层听觉诱发电位对正常听力儿童和听力丧失儿童进行阈值估计和中央听觉系统评估。研究设计：这项工作分为两组：GI（20名正常听力儿童）和GII（36名中度重度扁平感音神经性听力下降儿童。第二组分为两个亚组：GIIa（20名装有助听器的儿童）和GIIb （16名尚未配备助听器的儿童。）方法：对基本的听力学评估和使用语音和音调刺激的CAEP进行比较，并比较两组在相同感觉水平下CAEP成分的潜伏期和振幅。与GI和GIIa相比，GIIb在500 Hz处具有比其他频率更大的差异;与GI或GIIa相比，GIIb的CAEP潜伏期显着延迟，但CAEP幅度无显着差异。用于在不同频率下具有高度一致性的儿童中的阈值估计。助听器会影响简单或简单的皮层处理复杂的刺激。

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