Interleaved Processors Improve Cochlear Implant Patients' Spectral Resolution.
Interleaved Processors Improve Cochlear Implant Patients' Spectral Resolution.
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DOI：
10.1097/aud.0000000000000249
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发表时间：
2016-03
期刊：
影响因子：
3.7
通讯作者：
Landsberger DM
中科院分区：
文献类型：
--
作者：
Aronoff JM;Stelmach J;Padilla M;Landsberger DM
髋关节植入患者在嘈杂的环境中有困难，部分原因是通道相互作用。通过将每隔一个通道发送到另一只耳朵来交错信号具有通过增加每只耳朵中的通道之间的空间来减少通道交互的潜力。当两个耳朵被组合时，交织仍然潜在地提供相同量的频谱信息。尽管这种方法在其他人群中取得了成功，如助听器使用者，但与人工耳蜗植入患者的交叉植入并没有产生一致的益处。这可能是因为在交错之前必须考虑两个耳朵之间的感知未对准和刺激位置之间的间隔。对8名双侧人工耳蜗植入者进行了测试。在感知上对齐两只耳朵后，制作了十二个通道图，这些通道图跨越了阵列的整个对齐部分。通过从每只耳朵中删除每隔一个通道来创建交错映射。参与者的光谱分辨率和定位能力进行了测量与感知对齐的处理策略，有和没有交错。有一个显着的改善，在频谱分辨率与交织。然而，交织对定位能力没有显著影响。结果表明，交错可以提高耳蜗用户的频谱分辨率。然而，可能有必要在感知上对准两个耳朵和/或在刺激位置之间使用相对大的间隔。
Cochlear implant patients have difficulty in noisy environments in part because of channel interaction. Interleaving the signal by sending every other channel to the opposite ear has the potential to reduce channel interaction by increasing the space between channels in each ear. Interleaving still potentially provides the same amount of spectral information when the two ears are combined. Although this method has been successful in other populations such as hearing aid users, interleaving with cochlear implant patients has not yielded consistent benefits. This may be because perceptual misalignment between the two ears and the spacing between stimulation locations must be taken into account before interleaving. Eight bilateral cochlear implant users were tested. After perceptually aligning the two ears, twelve channel maps were made that spanned the entire aligned portions of the array. Interleaved maps were created by removing every other channel from each ear. Participants' spectral resolution and localization abilities were measured with perceptually aligned processing strategies both with and without interleaving. There was a significant improvement in spectral resolution with interleaving. However, there was no significant effect of interleaving on localization abilities. The results indicate that interleaving can improve cochlear implant users' spectral resolution. However, it may be necessary to perceptually align the two ears and/or use relatively large spacing between stimulation locations.