A new objective method to estimate the charge integration efficiency in cochlear implant users.

IF 1.8 3区医学 Q2 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY

International Journal of Audiology Pub Date : 2024-10-25 DOI:10.1080/14992027.2024.2417243

Palani Saravanan, Jawahar Antony P, Megha, Chinnaraj Geetha, Puttabasappa Manjula

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引用次数: 0

Abstract

Objective: The present study aimed to objectively assess the charge integration efficiency (CIE) of the auditory nerve using electrically-evoked stapedial reflex threshold (eSRT) measurements in paediatric cochlear implant users.

Design: The eSRT was estimated in two ways: by keeping pulse width constant while increasing pulse amplitude and vice versa. The electrical dynamic range (EDR) obtained for eSRT was measured with increasing pulse amplitude (EDR_PA) and pulse width (EDR_PW) by calculating the difference in charge units between eSRT and behavioural thresholds; further, CIE was estimated.

Study sample: Fifteen paediatric cochlear implant users.

Results: EDR_PW was 1.4 to 1.7 times larger than EDR_PA. The EDR_PW was significantly greater than the EDR_PA. A significant correlation was observed between both EDR measures. However, the CIE measure did not significantly correlate with the behavioural threshold. Further, there was no significant effect of electrode location on the CIE.

Conclusions: The CIE estimated with objective measures such as eSRT is comparable to those estimated using behavioural loudness judgments. eSRT can serve as a quick method to estimate the CIE, which can be easily implemented in the paediatric population. The CIE could be a valuable tool for differentiating electrodes with excellent and poor charge integration efficiency.

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估算人工耳蜗用户电荷整合效率的新客观方法。

研究目的本研究旨在通过对小儿人工耳蜗使用者进行电诱发镫骨反射阈值（eSRT）测量，客观评估听神经的电荷整合效率（CIE）：设计：通过两种方法估算 eSRT：保持脉冲宽度不变，同时增加脉冲振幅，反之亦然。通过计算 eSRT 和行为阈值之间的电荷单位差异，测量 eSRT 在脉冲振幅（EDRPA）和脉冲宽度（EDRPW）增加时获得的电动态范围（EDR）；此外，还估算了 CIE：研究样本：15 名儿童人工耳蜗用户：结果：EDRPW 是 EDRPA 的 1.4 至 1.7 倍。EDRPW 明显大于 EDRPA。两种 EDR 测量之间存在明显的相关性。然而，CIE 测量与行为阈值没有明显的相关性。此外，电极位置对 CIE 没有明显影响：使用 eSRT 等客观测量方法估算的 CIE 与使用行为响度判断估算的 CIE 相当。CIE 可以作为区分电荷整合效率优劣电极的重要工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Audiology 医学-耳鼻喉科学

CiteScore

4.90

自引率

14.80%

发文量

133

审稿时长

4-8 weeks

期刊介绍： International Journal of Audiology is committed to furthering development of a scientifically robust evidence base for audiology. The journal is published by the British Society of Audiology, the International Society of Audiology and the Nordic Audiological Society.