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首页> 外文期刊>Journal of the Association for Research in Otolaryngology: JARO >The Estimated Electrode-Neuron Interface in Cochlear Implant Listeners Is Different for Early-Implanted Children and Late-Implanted Adults
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The Estimated Electrode-Neuron Interface in Cochlear Implant Listeners Is Different for Early-Implanted Children and Late-Implanted Adults

机译：耳蜗植入听众中的估计电极 - 神经元界面对于早期植入的儿童和晚期成年人不同

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Cochlear implant (CI) programming is similar for all CI users despite limited understanding of the electrode-neuron interface (ENI). The ENI refers to the ability of each CI electrode to effectively stimulate target auditory neurons and is influenced by electrode position, neural health, cochlear geometry, and bone and tissue growth in the cochlea. Hearing history likely affects these variables, suggesting that the efficacy of each channel of stimulation differs between children who were implanted at young ages and adults who lost hearing and received a CI later in life. This study examined whether ENI quality differed between early-implanted children and late-implanted adults. Auditory detection thresholds and most comfortable levels (MCLs) were obtained with monopolar and focused electrode configurations. Channel-to-channel variability and dynamic range were calculated for both types of stimulation. Electrical field imaging data were also acquired to estimate levels of intracochlear resistance. Children exhibited lower average auditory perception thresholds and MCLs compared with adults, particularly with focused stimulation. However, neither dynamic range nor channel-to-channel threshold variability differed between groups, suggesting that children's range of perceptible current was shifted downward. Children also demonstrated increased intracochlear resistance levels relative to the adult group, possibly reflecting greater ossification or tissue growth after CI surgery. These results illustrate physical and perceptual differences related to the ENI of early-implanted children compared with late-implanted adults. Evidence from this study demonstrates a need for further investigation of the ENI in CI users with varying hearing histories.
机译：尽管对电极 - 神经元接口（ENI）有限，但所有CI用户的编程为所有CI用户的编程类似。 eni是指每个Ci电极有效地刺激目标听觉神经元的能力，并且受到耳蜗中的电极位置，神经健康，耳蜗几何形状和骨骼和组织生长的影响。听证历史可能会影响这些变量，这表明每个刺激通道的疗效在植入的孩子和成年人植入失去听证会和生活中的成年人之间的不同之处。本研究检测了eni质量是否在早期植入的儿童和晚期植入的成年人之间不同。通过单极和聚焦电极配置获得听觉检测阈值和最舒适的水平（MCLS）。对两种类型的刺激计算通道到通道变异性和动态范围。还获取电场成像数据以估计血管孔抗性水平。与成年人相比，儿童展出了较低的平均听觉感知阈值和MCL，特别是具有聚焦刺激。然而，动态范围和通道到通道阈值可变性都不是组之间的差异，表明儿童的可察觉电流范围向下移动。儿童还证明了相对于成年组的血管沉淀水平增加，可能反映CI手术后更大的骨化或组织生长。这些结果表明与早期植入的成年人相比，与早期植入儿童的eni相关的物理和感知差异。本研究中的证据表明，需要进一步调查具有不同听力历史的CI用户中的eni。

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