双侧人工耳蜗使用者多电极刺激下耳间时间差的侧向化
Lateralization of interaural timing differences with multi-electrode stimulation in bilateral cochlear-implant users.
作者信息
Kan Alan, Jones Heath G, Litovsky Ruth Y
机构信息
Binaural Hearing and Speech Laboratory, Waisman Center, University of Wisconsin-Madison, 1500 Highland Avenue, Madison, Wisconsin 53705, USA
Auditory Protection and Performance Division, U.S. Army Aeromedical Research Laboratory, Building 6901 Farrel Road, Fort Rucker, Alabama 36362, USA
出版信息
J Acoust Soc Am. 2016 Nov;140(5):EL392. doi: 10.1121/1.4967014.
Bilateral cochlear implant (BiCI) users have shown variability in interaural time difference (ITD) sensitivity at different places along the cochlea. This paper investigates perception of multi-electrode binaural stimulation to determine if auditory object formation (AOF) and lateralization are affected by variability in ITD sensitivity when a complex sound is encoded with multi-channel processing. AOF and ITD lateralization were compared between single- and multi-electrode configurations. Most (7/8) BiCI users perceived a single auditory object with multi-electrode stimulation, and the range of lateralization was comparable to single-electrode stimulation, suggesting that variability in single-electrode ITD sensitivity does not compromise AOF with multi-electrode stimulation.
双侧人工耳蜗（BiCI）使用者在耳蜗不同部位的双耳时间差（ITD）敏感性上存在差异。本文研究了多电极双耳刺激的感知情况，以确定当复杂声音通过多通道处理进行编码时，听觉对象形成（AOF）和定位是否会受到ITD敏感性差异的影响。比较了单电极和多电极配置下的AOF和ITD定位情况。大多数（7/8）BiCI使用者在多电极刺激下感知到单个听觉对象，并且定位范围与单电极刺激相当，这表明单电极ITD敏感性的差异不会因多电极刺激而损害AOF。
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