Université François-Rabelais de Tours, UMR-S1253, 37000 Tours, France; Ear Nose and Throat Department, CHRU de Tours, 37000 Tours, France.
Université François-Rabelais de Tours, UMR-S1253, 37000 Tours, France.
Eur Ann Otorhinolaryngol Head Neck Dis. 2019 Nov;136(6):439-445. doi: 10.1016/j.anorl.2019.08.001. Epub 2019 Aug 30.
To assess the impact of rehabilitation systems (CROS: Contralateral Routing of Signal; BAHA: Bone-Anchored Hearing Aid; CI: cochlear implant) on cortical auditory evoked potentials (CAEP) and auditory performance in unilateral hearing loss.
Twenty-one adults with unilateral hearing loss, using CROS (n=6), BAHA (n=6) or CI (n=9), were included. Seven normal-hearing subjects served as controls. CAEPs were recorded for a (/ba/) speech stimulus; for patients, tests were conducted with and without their auditory rehabilitation. Amplitude and latency of the various CAEP components of the global field power (GFP) were measured, and scalp potential fields were mapped. Behavioral assessment used sentence recognition in noise, with and without spatial cues.
Only CI induced N1 peak amplitude change (P<0.05). CI and CROS increased polarity inversion amplitude in the contralateral ear, and frontocentral negativity on the scalp potential map. CI improved understanding when speech was presented to the implanted ear and noise to the healthy ear, and vice-versa.
Cochlear implantation had the greatest impact on CAEP morphology and auditory performance. A longitudinal study could analyze progression of cortical reorganization.
评估康复系统（CROS：信号对侧传递；BAHA：骨锚式助听器；CI：人工耳蜗）对单侧听力损失患者皮质听觉诱发电位（CAEP）和听觉表现的影响。
纳入 21 名单侧听力损失患者，分别使用 CROS（n=6）、BAHA（n=6）或 CI（n=9）。7 名正常听力者作为对照组。对 (/ba/) 语音刺激进行 CAEP 记录；对于患者，在使用和不使用听觉康复设备的情况下进行测试。测量全局场功率（GFP）中各个 CAEP 成分的振幅和潜伏期，并绘制头皮电位图。行为评估采用噪声中句子识别，同时使用和不使用空间线索。
只有 CI 引起 N1 峰值振幅变化（P<0.05）。CI 和 CROS 增加了对侧耳中极性反转振幅和头皮电位图上额中央负性。CI 改善了当言语输入到植入耳而噪声输入到健耳，反之亦然时的理解能力。
人工耳蜗植入对 CAEP 形态和听觉表现的影响最大。纵向研究可以分析皮质重组的进展。
