Left hemispheric lateralization of brain activity during passive rhythm perception in musicians
Left hemispheric lateralization of brain activity during passive rhythm perception in musicians
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DOI：
10.1002/ar.a.20298
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发表时间：
2006-04-01
期刊：
影响因子：
--
通讯作者：
Braun, AR
中科院分区：
文献类型：
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作者：
Limb, CJ;Kemeny, S;Braun, AR
在节奏处理过程中大脑活动的半球专门化的性质仍然知之甚少。节奏处理的轨迹一直难以确定，有几个相互矛盾的研究结果。因此，我们使用功能性磁共振成像研究被动节奏知觉调查的假设，节奏处理的结果在左半球的大脑活动的偏侧化，并受到音乐训练。12名音乐家和12名非音乐家分别听有规律和随机的节奏模式。连接分析显示，一个共享的网络的神经结构（双边上级颞区，左下顶叶小叶，右额盖）负责独立的音乐背景的节奏感知。与此相反，随机效应分析表明，音乐家的大脑活动的左侧化比非音乐家在定期节奏感知，特别是在大脑外侧裂周皮质（左额盖，上级颞回，顶下小叶）。这些结果表明，音乐训练导致就业的左侧大脑外侧裂周区，通常活跃在语言理解，在被动节奏感知。
The nature of hemispheric specialization of brain activity during rhythm processing remains poorly understood. The locus for rhythmic processing has been difficult to identify and there have been several contradictory findings. We therefore used functional magnetic resonance imaging to study passive rhythm perception to investigate the hypotheses that rhythm processing results in left hemispheric lateralization of brain activity and is affected by musical training. Twelve musicians and 12 nonmusicians listened to regular and random rhythmic patterns. Conjunction analysis revealed a shared network of neural structures (bilateral superior temporal areas, left inferior parietal lobule, and right frontal operculum) responsible for rhythm perception independent of musical background. In contrast, random-effects analysis showed greater left lateralization of brain activity in musicians compared to nonmusicians during regular rhythm perception, particularly within the perisylvian cortices (left frontal operculum, superior temporal gyrus, inferior parietal lobule). These results suggest that musical training leads to the employment of left-sided perisylvian brain areas, typically active during language comprehension, during passive rhythm perception.