Neural correlates of binding lyrics and melodies for the encoding of new songs
Neural correlates of binding lyrics and melodies for the encoding of new songs
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DOI：
10.1016/j.neuroimage.2015.12.018
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发表时间：
2016-02-15
期刊：
影响因子：
5.7
通讯作者：
Samson, Severine
中科院分区：
文献类型：
--
作者：
Alonso, Irene;Davachi, Lila;Samson, Severine
歌曲自然地将歌词和旋律结合成一个统一的表现。使用随后的记忆范式，我们研究了在歌曲编码过程中与绑定歌词和旋律相关的神经过程。参与者在两种情况下呈现歌曲：一个统一的条件（与歌词一起唱的旋律）和一个单独的条件（与音节“la”一起唱的旋律）。在这两种情况下，都会展示书面歌词，并指示参与者通过秘密重复或在脑海中产生歌曲的图像来记住它们。我们期望统一的条件，以招募后上级颞回，已知参与知觉整合的歌曲，以及左额下回（IFG）。相反，我们假设，分离条件将涉及一个更大的网络，包括海马体，以绑定歌曲的歌词和旋律，基底神经节和小脑，以确保语言和音乐信息的正确顺序耦合。结合歌词和旋律在统一的条件下，激活左侧IFG，双边颞中回（MTG），和左运动皮层，这表明了强大的语言处理这种情况。与统一条件相比，单独条件下的结合显示右侧海马以及其他区域（包括左侧尾状核、左侧小脑和右侧IFG）的活性更高。这项研究为右侧海马体在歌曲中结合歌词和旋律的作用提供了新的证据。结果进行了讨论，结合在视觉领域的研究，并强调参与定时和同步，如基底神经节和小脑的区域的作用。(C)由Elsevier Inc.出版。
Songs naturally bind lyrics and melody into a unified representation. Using a subsequent memory paradigm, we examined the neural processes associated with binding lyrics and melodies during song encoding. Participants were presented with songs in two conditions: a unified condition (melodies sung with lyrics), and a separate condition (melodies sung with the syllable "la"). In both cases, written lyrics were displayed and participants were instructed to memorize them by repeating them covertly or by generating mental images of the songs. We expected the unified condition to recruit the posterior superior temporal gyrus, known to be involved in perceptual integration of songs, as well as the left inferior frontal gyrus (IFG). Conversely, we hypothesized that the separate condition would engage a larger network including the hippocampus to bind lyrics and melodies of songs, and the basal ganglia and the cerebellum to ensure the correct sequence coupling of verbal and musical information in time. Binding lyrics and melodies in the unified condition revealed activation of the left IFG, bilateral middle temporal gyrus (MTG), and left motor cortex, suggesting a strong linguistic processing for this condition. Binding in the separate compared to the unified condition revealed greater activity in the right hippocampus as well as other areas including the left caudate, left cerebellum, and right IFG. This study provides novel evidence for the role of the right hippocampus in binding lyrics and melodies in songs. Results are discussed in light of studies of binding in the visual domain and highlight the role of regions involved in timing and synchronization such as the basal ganglia and the cerebellum. (C) 2015 Published by Elsevier Inc.