Expertise-dependent motor somatotopy of music perception
Expertise-dependent motor somatotopy of music perception
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DOI：
10.1016/j.neulet.2017.04.033
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发表时间：
2017-05-22
影响因子：
2.5
通讯作者：
Furuya, Shinichi
中科院分区：
文献类型：
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作者：
Furukawa, Yuta;Uehara, Kazumasa;Furuya, Shinichi
声音和动作之间的精确映射是语音和音乐表演中成功沟通和信息传输的基础。地图的形成通常通过训练在听觉和运动区域之间的神经元网络中经历塑性变化。然而，在何种程度上的地图是somatotopically-tuned，使听觉信息可以专门调制负责相关的运动动作的皮质脊髓系统尚未阐明。在这里，我们解决了这个问题，通过评估皮质脊髓系统的兴奋性，包括初级运动皮层（M1）支配的手内在肌的经颅磁刺激，而训练有素的钢琴家和音乐未经训练的个人（非音乐家）正在听钢琴音调或噪音。M1兴奋性在两个解剖学上独立的肌肉的手进行了评价。结果表明，在钢琴家听钢琴音调时，除了一个特定的肌肉外，M1兴奋性并不是全部升高，但在非音乐家的两块肌肉中没有兴奋性变化。然而，听噪音并没有引起任何变化的M1兴奋性在这两个肌肉在钢琴家和非音乐家。这些研究结果表明，听觉信息表示的训练运动动作曲调M1兴奋性在一个不均匀的，somatotopically特定的方式，这是可能与多模态的经验，在音乐训练。(C)2017爱思唯尔B. V.保留所有权利。
Precise mapping between sound and motion underlies successful communication and information transmission in speech and musical performance. Formation of the map typically undergoes plastic changes in the neuronal network between auditory and motor regions through training. However, to what extent the map is somatotopically-tuned so that auditory information can specifically modulate the corticospinal system responsible for the relevant motor action has not been elucidated. Here we addressed this issue by assessing the excitability of corticospinal system including the primary motor cortex (M1) innervating the hand intrinsic muscles by means of transcranial magnetic stimulation while trained pianists and musically-untrained individuals (non-musicians) were listening to either piano tones or noise. M1 excitability was evaluated at two anatomically-independent muscles of the hand. The results demonstrated elevation of M1 excitability at not all but one specific muscle while listening to piano tones in the pianists, but no excitability change in both of the muscles in the non-musicians. However, listening to noise did not elicit any changes of M1 excitability at both muscles in both the pianists and the non-musicians. These findings indicate that auditory information representing the trained motor action tunes M1 excitability in a non-uniform, somatotopically-specific manner, which is likely associated with multimodal experiences in musical training. (C) 2017 Elsevier B.V. All rights reserved.