Department of Hearing and Speech Sciences, University of Maryland, College Park, Maryland 20742, USA.
National Military Audiology and Speech Pathology Center, Walter Reed National Military Medical Center, Bethesda, Maryland 20889,
JASA Express Lett. 2023 Apr 1;3(4). doi: 10.1121/10.0017705.
Bilateral cochlear-implant users experience interaural frequency mismatch because of asymmetries in array insertion and frequency-to-electrode assignment. To explore the acute perceptual consequences of such mismatch, sentence recognition in quiet was measured in nine bilateral cochlear-implant listeners as frequency allocations in the poorer ear were shifted by ±1.5, ±3, and ±4.5 mm using experimental programs. Shifts in frequency allocation >3 mm reduced bilateral sentence scores below those for the better ear alone, suggesting that the poorer ear interfered with better-ear perception. This was not a result of fewer active channels; deactivating electrodes without frequency shifting had minimal effect.
双侧人工耳蜗使用者由于植入体阵列的不对称以及电极频率分配的差异，会经历到两耳间的频率失配。为了探究这种失配对感知的急性影响，使用实验程序将较差耳中的频率分配分别向正负 1.5、3 和 4.5mm 移动，对 9 名双侧人工耳蜗使用者在安静环境下的句子识别能力进行了测量。频率分配的移动 >3mm 会使双侧句子得分低于单耳得分，这表明较差耳会干扰较好耳的感知。这并不是由于可用的通道较少所致；不进行频率移动而停用电极几乎没有效果。
