The neural substrates of musical memory revealed by fMRI and two semantic tasks
The neural substrates of musical memory revealed by fMRI and two semantic tasks
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DOI：
10.1016/j.neuroimage.2010.07.013
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发表时间：
2010-12-01
期刊：
影响因子：
5.7
通讯作者：
Platel, H.
中科院分区：
文献类型：
--
作者：
Groussard, M.;Rauchs, G.;Platel, H.
识别音乐摘录而不必检索其标题通常反映了专门用于检索音乐知识的记忆系统的存在。音乐语义记忆和言语语义记忆的功能区别很少被研究。在这项功能磁共振成像研究中，我们直接比较了20名非音乐家的音乐记忆和文字记忆。使用涉及自动语义检索的一致性任务和需要更彻底的语义检索的熟悉性任务。在前者中，参与者必须访问他们的语义存储，以检索他们听到的旋律或表达的音乐或语言表征，以便决定这些是否被给予正确的结尾。在后者中，他们必须判断音乐摘录和表达的熟悉程度。这两项任务显示激活左下额叶和后中颞叶皮质，这表明执行和选择过程是共同的口头和音乐检索。在左侧颞叶皮层内观察到不同的激活模式，音乐材料主要激活上级颞回，语言材料主要激活中回和下回。音乐和语言语义表征的皮层组织可以解释临床分离，其特征是对音乐或语言材料的选择性干扰。(C)2010年爱思唯尔公司All rights reserved.
Recognizing a musical excerpt without necessarily retrieving its title typically reflects the existence of a memory system dedicated to the retrieval of musical knowledge. The functional distinction between musical and verbal semantic memory has seldom been investigated. In this fMRI study, we directly compared the musical and verbal memory of 20 nonmusicians. using a congruence task involving automatic semantic retrieval and a familiarity task requiring more thorough semantic retrieval. In the former, participants had to access their semantic store to retrieve musical or verbal representations of melodies or expressions they heard, in order to decide whether these were then given the right ending or not. In the latter, they had to judge the level of familiarity of musical excerpts and expressions. Both tasks revealed activation of the left inferior frontal and posterior middle temporal cortices, suggesting that executive and selection processes are common to both verbal and musical retrievals. Distinct patterns of activation were observed within the left temporal cortex, with musical material mainly activating the superior temporal gyrus and verbal material the middle and inferior gyri. This cortical organization of musical and verbal semantic representations could explain clinical dissociations featuring selective disturbances for musical or verbal material. (C) 2010 Elsevier Inc. All rights reserved.