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2014-09-09 00:01:31
 图示：听觉皮层的示范度，整体效率和局部效率。
美国北卡罗莱纳大学等处的研究人员表明，听一首自己喜欢的歌曲似乎会触发一个共同的脑活动模式，而不管这首歌曲的风格是什么。这些发现也许可解释为什么在听他们喜欢的音乐(不管是贝多芬的还是艾米纳姆的)时，不同的人会有相似的情绪感觉和记忆反应。相关文章发表于2014年8月28日的《Scientific Reports》杂志上。 音乐喜好在很大程度上是因人而异的，不同音乐类型在其旋律、和声特征以及节奏复杂性上会有实质性差别。然而，当听自己喜欢的音乐时，人经常会提到相同的反应——勾起个人想法和记忆。 为了解为什么不同的人会有相似的体验，Jonathan Burdette及同事对21个人在听不同类型音乐、包括摇滚、说唱和古典音乐时功能性脑网络的差别进行了评估(他们所采用的是“功能性磁共振成像”、即fMRI数据)。他们识别出了与歌曲喜好相关的一致的脑连接模式。当听他们自称喜欢的歌曲时，该研究的参加者在一个与“心无旁骛”相关的脑回路中表现出连接增强，同时在听觉脑区域与负责记忆和社会化情绪之巩固的区域之间的联系显示被改变。 这些发现让我们对与听自己喜好和喜欢的音乐相关的情绪及认知状态背后的神经活动有所认识。(来源：生物帮) 原文摘要： R. W. Wilkins, D. A. Hodges, P. J. Laurienti, M. Steen & J. H. Burdette Most people choose to listen to music that they prefer or ‘like’ such as classical, country or rock. Previous research has focused on how different characteristics of music (i.e., classical versus country) affect the brain. Yet, when listening to preferred music—regardless of the type—people report they often experience personal thoughts and memories. To date, understanding how this occurs in the brain has remained elusive. Using network science methods, we evaluated differences in functional brain connectivity when individuals listened to complete songs. We show that a circuit important for internally-focused thoughts, known as the default mode network, was most connected when listening to preferred music. We also show that listening to a favorite song alters the connectivity between auditory brain areas and the hippocampus, a region responsible for memory and social emotion consolidation. Given that musical preferences are uniquely individualized phenomena and that music can vary in acoustic complexity and the presence or absence of lyrics, the consistency of our results was unexpected. These findings may explain why comparable emotional and mental states can be experienced by people listening to music that differs as widely as Beethoven and Eminem. The neurobiological and neurorehabilitation implications of these results are discussed. |
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