Cañete Oscar M, Purdy Suzanne C, Neeff Michel, Brown Colin R S, Thorne Peter R
a Speech Science, School of Psychology , The University of Auckland , New Zealand.
d Eisdell Moore Centre for Research in Hearing and Balance , Auckland , New Zealand.
Cochlear Implants Int. 2017 Nov;18(6):335-346. doi: 10.1080/14670100.2017.1373499. Epub 2017 Sep 19.
To study the changes in behavioural and cortical responses over time in a child with single-sided deafness fitted with a cochlear implant (CI).
Cortical auditory evoked potentials (CAEPs) in noise (+5 dB signal-to-noise ratio) were recorded and auditory skills were assessed using tests of sound localization, spatial speech perception in noise, and self-ratings of auditory abilities (Listening inventory for education, LIFE and Speech, spatial and qualities of hearing questionnaire, SSQ parental version). Measures were obtained prior to and after a CI fitting, including one, six, and 12 months after the CI switch on.
Spatial speech recognition improved over time. At 12 months post-CI, word recognition scores were similar to those of normal hearing children. Signal-to-noise ratios for sentences decreased (i.e. improved) over time post-CI. Sound localization markedly improved at 12 months post-CI compared to baseline. Self-perception of difficulty scores decreased over time. Parental ratings of hearing abilities improved compared to baseline for all subscales. There were changes in the P1-N1-P2 complex at 12 months post-CI, which were clearer frontally across stimuli. Further research is needed to understand the significance of such changes after CI fitting for single-sided deafness.
Although the changes observed could reflect maturational changes, the clinically significant improvement in recognition of speech in noise and improved questionnaire results suggest that the CI was beneficial, consistent with the feedback from the participant.
研究单侧耳聋儿童植入人工耳蜗(CI)后行为和皮层反应随时间的变化。
记录噪声环境(信噪比为+5 dB)下的皮层听觉诱发电位(CAEP),并通过声音定位测试、噪声环境下的空间语音感知测试以及听觉能力自评(教育用听力量表、LIFE和语音、空间及听力质量问卷家长版)来评估听觉技能。在植入人工耳蜗之前及之后进行测量,包括开机后1个月、6个月和12个月。
空间语音识别能力随时间提高。人工耳蜗植入后12个月,单词识别分数与正常听力儿童相似。人工耳蜗植入后,句子的信噪比随时间下降(即提高)。与基线相比,人工耳蜗植入后12个月声音定位明显改善。困难程度自我感知分数随时间下降。与基线相比,家长对所有子量表的听力能力评分均有所提高。人工耳蜗植入后12个月,P1-N1-P2复合波有变化,在额叶部位跨刺激更明显。需要进一步研究以了解单侧耳聋患者植入人工耳蜗后这种变化的意义。
尽管观察到的变化可能反映了发育成熟的变化,但噪声环境下语音识别的临床显著改善以及问卷结果的改善表明人工耳蜗是有益的,这与参与者的反馈一致。