ENT Department, Cochlear Implant Group at Clinical Hospital of the Medical School at University of São Paulo, Av. Dr. Eneas de Carvalho Aguiar 255, São Paulo, Brazil.
Eur Arch Otorhinolaryngol. 2024 Jul;281(7):3491-3498. doi: 10.1007/s00405-024-08451-0. Epub 2024 Jan 19.
While cochlea is adult size at birth, etiologies and bone density may differ between children and adults. Differences in neural response thresholds (tNRT) and the spread of excitation (SOE) width may impact the use of artificial intelligence algorithms in speech processor fitting.
To identify whether neural response telemetry threshold and spread of excitation width are similar in adults and children.
Retrospective cross-sectional study approved by the Ethical Board. Intraoperative tNRT and SOE recordings of consecutive cochlear implant surgeries in adults and children implanted with Cochlear devices (Cochlear™, Australia) were selected. SOE was recorded on electrode 11 (or adjacent, corresponding to the medial region of the cochlea) through the standard forward-masking technique in Custom Sound EP software, which provides SOE width in millimeters. Statistical comparison between adults and children was performed using the Mann-Whitney test (p ≤ 0.05).
Of 1282 recordings of intraoperative evaluations, 414 measurements were selected from children and adults. Despite the tNRT being similar between adults and children, SOE width was significantly different, with lower values in children with perimodiolar arrays. Besides, it was observed that there is a difference in the electrode where the SOE function peak occurred, more frequently shifted to electrode 12 in adults implanted. In straight arrays, there was no difference in any of the parameters analyzed on electrode 11.
Although eCAP thresholds are similar, SOE measurements differ between adults and children in perimodiolar electrodes.
虽然出生时耳蜗已经达到成人大小，但儿童和成人的病因和骨密度可能存在差异。神经反应阈值（tNRT）和兴奋扩散（SOE）宽度的差异可能会影响人工智能算法在言语处理器适配中的应用。
确定成人和儿童的神经反应遥测阈值和兴奋扩散宽度是否相似。
回顾性横断面研究，经伦理委员会批准。选择植入 Cochlear 设备（澳大利亚 Cochlear）的成人和儿童连续耳蜗植入手术的术中 tNRT 和 SOE 记录。通过 Custom Sound EP 软件中的标准前向掩蔽技术在电极 11 上（或相邻电极，对应耳蜗的内侧区域）记录 SOE，该软件以毫米为单位提供 SOE 宽度。使用 Mann-Whitney 检验（p≤0.05）对成人和儿童进行统计学比较。
在 1282 次术中评估记录中，从儿童和成人中选择了 414 次测量。尽管成人和儿童的 tNRT 相似，但 SOE 宽度存在显著差异，在使用peri 模式数组的儿童中值较低。此外，还观察到 SOE 功能峰发生的电极存在差异，植入成人电极 12 的情况更为常见。在直数组中，在分析电极 11 上的任何参数时均无差异。
尽管 eCAP 阈值相似，但 peri 模式电极中成人和儿童的 SOE 测量值存在差异。
