Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, IL, USA Department of Otolaryngology-Head and Neck Surgery, University of Illinois at Chicago, IL, USA Communication and Neuroscience Division, House Ear Institute, Los Angeles, CA, USA
Communication and Neuroscience Division, House Ear Institute, Los Angeles, CA, USA Department of Otolaryngology, New York University School of Medicine, NY, USA USC Tina and Rick Caruso Department of Otolaryngology, Head and Neck Surgery, University of Southern California, Los Angeles, CA, USA.
Trends Hear. 2016 Sep 18;20:2331216516668302. doi: 10.1177/2331216516668302.
For bilateral cochlear implant (CI) patients, electrodes that receive the same frequency allocation often stimulate locations in the left and right ear that do not yield the same perceived pitch, resulting in a pitch mismatch. This pitch mismatch may be related to degraded binaural abilities. Pitch mismatches have been found for some bilateral CI users and the goal of this study was to determine whether pitch mismatches are prevalent in bilateral CI patients, including those with extensive experience with bilateral CIs. To investigate this possibility, pitch matching was conducted with 16 bilateral CI patients. For 14 of the 16 participants, there was a significant difference between those electrodes in the left and right ear that yielded the same pitch and those that received the same frequency allocation in the participant's clinical map. The results suggest that pitch mismatches are prevalent with bilateral CI users. The results also indicated that pitch mismatches persist even with extended bilateral CI experience. Such mismatches may reduce the benefits patients receive from bilateral CIs.
对于双侧人工耳蜗植入（CI）患者，接收相同频率分配的电极通常会刺激左耳和右耳中无法产生相同感知音高的位置，从而导致音高不匹配。这种音高不匹配可能与双耳能力下降有关。已经在一些双侧 CI 用户中发现了音高不匹配，本研究的目的是确定音高不匹配是否在双侧 CI 患者中普遍存在，包括那些具有丰富双侧 CI 经验的患者。为了研究这种可能性，对 16 名双侧 CI 患者进行了音高匹配。对于 16 名参与者中的 14 名，在左耳和右耳中产生相同音高的电极与在参与者的临床图中接收相同频率分配的电极之间存在显著差异。结果表明，双侧 CI 用户中普遍存在音高不匹配。结果还表明，即使具有扩展的双侧 CI 经验，音高不匹配也仍然存在。这种不匹配可能会降低患者从双侧 CI 中获得的益处。
