Data_Sheet_1_Short-Term Test-Retest Reliability of Electrically Evoked Cortical Auditory Potentials in Adult Cochlear Implant Recipients.pdf

Background: Late latency auditory evoked potentials (LLAEPs) provide objective evidence of an individual's central auditory processing abilities. Electrically evoked cortical auditory evoked potentials (eCAEPs) are a type of LLAEP that provides an objective measure of aided speech perception and auditory processing abilities in cochlear implant (CI) recipients.Aim: To determine the short-term test-retest reliability of eCAEPs in adult CI recipients.Design: An explorative, within-subject repeated measures research design was employed.Study Sample: The study sample included 12 post-lingually deafened, unilaterally implanted adult CI recipients with at least 9 months of CI experience.Method: eCAEPs representing basal, medial and apical cochlear regions were recorded in the implanted ears of each participant. Measurements were repeated 7 days after the initial assessment.Results: No significant differences between either median latencies or amplitudes at test and retest sessions (p > 0.05) were found when results for apical, medial and basal electrodes were averaged together. Mean intraclass correlation coefficient (ICC) scores averaged across basal, medial and apical cochlear stimulus regions indicated that both consistency and agreement were statistically significant and ranged from moderate to good (ICC = 0.58–0.86, p < 0.05). ICC confidence intervals did demonstrate considerable individual variability in both latency and amplitudes.Conclusion: eCAEP latencies and amplitudes demonstrated moderate to good short-term test-retest reliability. However, confidence intervals indicated individual variability in measurement consistency which is likely linked to attention and listening effort required from the CI recipients.

背景：晚期潜伏期听觉诱发电位（LLAEPs）为个体中枢听觉处理能力提供了客观证据。电诱发的皮质听觉诱发电位（eCAEPs）是一种LLAEP，为耳蜗植入（CI）受者提供了辅助言语感知和听觉处理能力的客观度量。目标：确定eCAEPs在成人CI受者中的短期测试-重测可靠性。设计：采用了一种探索性、受试者内重复测量的研究设计。研究样本：研究样本包括12名术后聋、单侧植入成人CI受者，他们至少有9个月的CI使用经验。方法：记录了每个参与者在植入耳中代表基底、内侧和外侧耳蜗区域的eCAEPs。测量在初始评估后的7天内重复进行。结果：当将顶点、内侧和基底电极的结果平均在一起时，无论是在测试还是重测会议中，均未发现中位潜伏期或振幅之间有显著差异（p > 0.05）。平均的跨类别相关系数（ICC）评分表明，在基底、内侧和顶点耳蜗刺激区域中，一致性和一致性在统计学上均显著，且范围为中等至良好（ICC = 0.58–0.86，p < 0.05）。ICC置信区间确实显示了潜伏期和振幅方面的相当大的个体变异性。结论：eCAEP的潜伏期和振幅显示出中等至良好的短期测试-重测可靠性。然而，置信区间表明测量一致性存在个体变异性，这可能与CI受者所需注意力和听力努力有关。