Stelmach Julia, Landsberger David M, Padilla Monica, Aronoff Justin M
a Department of Speech and Hearing Science , University of Illinois at Urbana-Champaign , Champaign , IL , USA.
b Department of Otolaryngology , New York University , New York , NY , USA.
Int J Audiol. 2017 Nov;56(11):894-899. doi: 10.1080/14992027.2017.1346302. Epub 2017 Jul 12.
With bilateral cochlear implant (CI) users there is typically a place mismatch between the locations stimulated by the left and right electrode arrays. This mismatch can affect performance, potentially limiting binaural benefits. One way to address this is by perceptually realigning the arrays such that a given frequency in the input stimulates perceptually matched locations in the two ears. A clinically feasible technique is needed that can determine the appropriate perceptual alignment. A pitch matching task can potentially be used for this, but only if it can be performed in a clinically feasible amount of time. The objective of this study was to determine the minimal number of electrodes that need to be pitch matched to accurately determine pitch matches across the entire array.
A retrospective analysis of pitch matching data was conducted. Subsets of pitch matches were selected and the predicted pitch matching across the array was compared to that predicted by the full dataset.
16 bilateral CI users.
The results indicated that nine pitch matches are sufficient, which can typically be obtained in approximately 7 min.
The results reveal a clinically feasible method for determining pitch matches across the array.
对于双侧人工耳蜗（CI）使用者，左右电极阵列所刺激的位置通常存在空间不匹配。这种不匹配会影响表现，可能限制双耳效应。解决这一问题的一种方法是通过感知方式重新调整阵列，使输入中的给定频率能刺激双耳中感知上匹配的位置。需要一种临床可行的技术来确定合适的感知对齐方式。音高匹配任务可能可用于此，但前提是它能在临床可行的时间内完成。本研究的目的是确定为准确确定整个阵列的音高匹配所需进行音高匹配的最少电极数量。
对音高匹配数据进行回顾性分析。选择音高匹配的子集，并将整个阵列的预测音高匹配与完整数据集预测的结果进行比较。
16名双侧CI使用者。
结果表明九次音高匹配就足够了，通常大约7分钟就能完成。
研究结果揭示了一种在临床上可行的确定整个阵列音高匹配的方法。
