Marsella Pasquale, Scorpecci Alessandro, Vecchiato Giovanni, Colosimo Alfredo, Maglione Anton Giulio, Babiloni Fabio
Cochlear Implants Int. 2014 May;15 Suppl 1:S68-71. doi: 10.1179/1467010014Z.000000000171.
To investigate by means of non-invasive neuroelectrical imaging the differences in the perceived pleasantness of music between children with cochlear implants (CI) and normal-hearing (NH) children.
5 NH children and 5 children who received a sequential bilateral CI were assessed by means of High-Resolution EEG with Source Reconstruction as they watched a musical cartoon. Implanted children were tested before and after the second implant. For each subject the scalp Power Spectral Density was calculated in order to investigate the EEG alpha asymmetry.
The scalp topographic distribution of the EEG power spectrum in the alpha band was different in children using one CI as compared to NH children (see figure). With two CIs the cortical activation pattern changed significantly, becoming more similar to the one observed in NH children.
The findings support the hypothesis that bilateral CI users have a closer-to-normal perception of the pleasantness of music than unilaterally implanted children.
通过非侵入性神经电成像技术，研究人工耳蜗植入（CI）儿童与听力正常（NH）儿童对音乐愉悦感的差异。
5名听力正常儿童和5名接受双侧序贯人工耳蜗植入的儿童在观看音乐卡通片时，采用高分辨率脑电图源重建技术进行评估。植入儿童在第二次植入前后进行测试。为研究脑电图α波不对称性，计算了每个受试者的头皮功率谱密度。
与听力正常儿童相比，使用单侧人工耳蜗的儿童在α波段脑电图功率谱的头皮地形图分布有所不同（见图）。使用双侧人工耳蜗时，皮层激活模式发生显著变化，变得更类似于听力正常儿童中观察到的模式。
这些发现支持了以下假设，即与单侧植入儿童相比，双侧人工耳蜗使用者对音乐愉悦感的感知更接近正常。
