Yüksel Mustafa, Meredith Margaret A, Rubinstein Jay T
Audiology and Speech Disorders Program, Institute of Health Sciences, Marmara University, Istanbul, Turkey.
Childhood Communication Center, Seattle Children's Hospital, Seattle, WA, United States.
Front Neurosci. 2019 Sep 3;13:924. doi: 10.3389/fnins.2019.00924. eCollection 2019.
Studies have demonstrated the benefits of low frequency residual hearing in music perception and for psychoacoustic abilities of adult cochlear implant (CI) users, but less is known about these effects in the pediatric group. Understanding the contribution of combined electric and acoustic stimulation in this group can help to gain a better perspective on decisions regarding bilateral implantation. We evaluated the performance of six unilaterally implanted children between 9 and 13 years of age with contralateral residual hearing using the Clinical Assessment of Music Perception (CAMP), spectral ripple discrimination (SRD), and temporal modulation transfer function (TMTF) tests and compared findings with previous research. Our study sample performed similarly to normal hearing subjects in pitch direction discrimination (0.81 semitones) and performed well above typical CI users in melody recognition (43.37%). The performance difference was less in timbre recognition (48.61%), SRD (1.47 ripple/octave), and TMTF for four modulation frequencies. These findings suggest that the combination of low frequency acoustic hearing with the broader frequency range of electric hearing can help to increase clinical CI benefit in pediatric users and decisions regarding second-side implantation should consider these factors.
研究已经证明了低频残余听力在音乐感知以及成人人工耳蜗（CI）使用者心理声学能力方面的益处，但对于小儿群体中的这些影响却知之甚少。了解这一群体中电刺激和声刺激相结合的作用，有助于更好地看待双侧植入的相关决策。我们使用音乐感知临床评估（CAMP）、频谱纹波辨别（SRD）和时间调制传递函数（TMTF）测试，评估了6名9至13岁单侧植入且对侧有残余听力的儿童的表现，并将结果与先前的研究进行了比较。我们的研究样本在音高方向辨别（0.81半音）方面的表现与正常听力受试者相似，在旋律识别方面（43.37%）的表现远高于典型的CI使用者。在音色识别（48.61%）、SRD（1.47纹波/倍频程）以及四个调制频率的TMTF方面，表现差异较小。这些发现表明，低频声学听力与更宽频率范围的电听力相结合，有助于提高小儿CI使用者的临床受益，并且关于对侧植入的决策应考虑这些因素。
