Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou 215006, China.
Department of Otology and Skull Base Surgery, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai 200031, China.
J Acoust Soc Am. 2018 Aug;144(2):EL131. doi: 10.1121/1.5051051.
Due to poor perception of fundamental frequency (0) cues that are important for lexical tone perception and talker segregation, pediatric Chinese cochlear implant (CI) users may be especially susceptible to informational masking. Here, speech recognition thresholds (SRTs) were measured in steady noise or competing speech in Mandarin-speaking CI and normal-hearing (NH) children. CI children were more susceptible to informational masking and were unable to use 0 cues to segregate talkers. SRTs were significantly correlated with chronological age in NH children and with duration of deafness in CI children, suggesting that auditory deprivation may limit developmental processes important for talker segregation.
由于对基频（0）线索的感知能力较差，而这些线索对词汇声调感知和说话人区分非常重要，因此儿科中文人工耳蜗（CI）使用者可能特别容易受到信息掩蔽的影响。在这里，我们测量了讲普通话的 CI 儿童和正常听力（NH）儿童在稳态噪声或竞争语音中的言语识别阈值（SRT）。CI 儿童更容易受到信息掩蔽的影响，并且无法使用 0 线索来区分说话人。NH 儿童的 SRT 与实际年龄显著相关，CI 儿童的 SRT 与耳聋持续时间显著相关，这表明听觉剥夺可能限制了说话人区分的重要发育过程。
