Tanaka Shoji, Kirino Eiji
Department of Information and Communication Sciences, Sophia University, Tokyo 102-0081, Japan.
Department of Psychiatry, Juntendo University School of Medicine, Tokyo 113-8431, Japan; Juntendo Shizuoka Hospital, Shizuoka 410-2211, Japan.
Brain Cogn. 2018 Feb;120:43-47. doi: 10.1016/j.bandc.2017.11.001. Epub 2017 Nov 6.
Auditory-sensorimotor coupling is critical for musical performance, during which auditory and somatosensory feedback signals are used to ensure desired outputs. Previous studies reported opercular activation in subjects performing or listening to music. A functional connectivity analysis suggested the parietal operculum (PO) as a connector hub that links auditory, somatosensory, and motor cortical areas. We therefore examined whether this PO network differs between musicians and non-musicians. We analyzed resting-state PO functional connectivity with Heschl's gyrus (HG), the planum temporale (PT), the precentral gyrus (preCG), and the postcentral gyrus (postCG) in 35 musicians and 35 non-musicians. In musicians, the left PO exhibited increased functional connectivity with the ipsilateral HG, PT, preCG, and postCG, whereas the right PO exhibited enhanced functional connectivity with the contralateral HG, preCG, and postCG and the ipsilateral postCG. Direct functional connectivity between an auditory area (the HG or PT) and a sensorimotor area (the preCG or postCG) did not significantly differ between the groups. The PO's functional connectivity with auditory and sensorimotor areas is enhanced in musicians relative to non-musicians. We propose that the PO network facilitates musical performance by mediating multimodal integration for modulating auditory-sensorimotor control.
听觉-感觉运动耦合对于音乐表演至关重要，在此过程中，听觉和体感反馈信号被用于确保期望的输出。先前的研究报道了在进行音乐表演或聆听音乐的受试者中脑岛盖部的激活。一项功能连接性分析表明，顶叶岛盖部（PO）作为一个连接枢纽，连接着听觉、体感和运动皮层区域。因此，我们研究了音乐家和非音乐家之间这个PO网络是否存在差异。我们分析了35名音乐家和35名非音乐家静息状态下PO与颞横回（HG）、颞平面（PT）、中央前回（preCG）和中央后回（postCG）的功能连接性。在音乐家组中，左侧PO与同侧的HG、PT、preCG和postCG的功能连接性增强，而右侧PO与对侧的HG、preCG和postCG以及同侧的postCG的功能连接性增强。两组之间听觉区域（HG或PT）和感觉运动区域（preCG或postCG）之间的直接功能连接性没有显著差异。与非音乐家相比，音乐家组中PO与听觉和感觉运动区域的功能连接性增强。我们提出，PO网络通过介导多模态整合来调节听觉-感觉运动控制，从而促进音乐表演。
