Xie Dianzhao, Luo Jianfen, Chao Xiuhua, Wang Ruijie, Fan Zhaomin, Wang Haibo, Xu Lei
Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, Shandong, China.
Department of Auditory Implantation, Shandong Second Provincial General Hospital, Jinan, Shandong, China.
J Otolaryngol Head Neck Surg. 2025 Jan-Dec;54:19160216251333356. doi: 10.1177/19160216251333356. Epub 2025 Apr 23.
ObjectiveTo study whether the ability to detect frequency changes or temporal gaps at the early phase postactivation can predict speech perception performance at the late phase postactivation in postlingually deafened cochlear implant (CI) users.MethodPsychophysical tests and event-related potential (ERP) tests were conducted at the third-month postactivation (early phase postactivation, T1) and after 1-year postactivation (late phase postactivation, T2) in 27 postlingually deafened CI users. CI hearing thresholds and speech perception performance were measured at T1 and T2. The frequency change detection threshold (FCDT) and gap detection threshold (GDT) were obtained through psychophysical tests. The evoked threshold, amplitude, and latency of auditory change complex response, evoked by frequency change or temporal gap stimuli, were investigated using ERP tests.ResultsCompared with T1, speech perception performance was significantly better at T2, but there was no significant difference in the psychophysical or ERP test results. Speech perception performance at T2 could be predicted by GDT at T1, but not by FCDT or ERP indicators at T1. Receiver-operating characteristic curve analysis suggested that the GDT at T1 may be moderately accurate in discriminating between good and poor speech perception groups at T2.ConclusionCompared to early phase postactivation, CI users' ability to detect frequency changes or temporal gaps did not change significantly at the late phase postactivation, but speech perception performance improved significantly. The early GDT can predict later speech perception performance of CI users.Level of EvidenceIII.
目的
研究语后聋人工耳蜗（CI）使用者在激活后早期检测频率变化或时间间隙的能力是否能预测激活后晚期的言语感知表现。
方法
对27名语后聋CI使用者在激活后第三个月（激活后早期，T1）和激活后1年（激活后晚期，T2）进行了心理物理学测试和事件相关电位（ERP）测试。在T1和T2测量CI听力阈值和言语感知表现。通过心理物理学测试获得频率变化检测阈值（FCDT）和间隙检测阈值（GDT）。使用ERP测试研究由频率变化或时间间隙刺激诱发的听觉变化复合反应的诱发阈值、幅度和潜伏期。
结果
与T1相比，T2时言语感知表现明显更好，但心理物理学或ERP测试结果无显著差异。T2时的言语感知表现可由T1时的GDT预测，但不能由T1时的FCDT或ERP指标预测。受试者操作特征曲线分析表明，T1时的GDT在区分T2时言语感知良好和较差组方面可能具有中等准确性。
结论
与激活后早期相比，CI使用者在激活后晚期检测频率变化或时间间隙的能力没有显著变化，但言语感知表现显著改善。早期的GDT可以预测CI使用者后期的言语感知表现。
证据水平
III。
