VERBAL MEMORY RETRIEVAL ENGAGES VISUAL CORTEX IN MUSICIANS
VERBAL MEMORY RETRIEVAL ENGAGES VISUAL CORTEX IN MUSICIANS
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言语记忆检索涉及音乐家的视觉皮层
DOI：
10.1016/j.neuroscience.2010.03.027
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发表时间：
2010-06-16
期刊：
影响因子：
3.3
通讯作者：
Weng, X.
中科院分区：
文献类型：
--
作者：
Huang, Z.;Zhang, J. X.;Weng, X.
作为大脑可塑性研究的一个重要方向，许多影像学研究已经被用来识别与音乐专长相关的功能和结构重组。本研究在前人行为学研究的基础上，运用功能性磁共振成像技术，对音乐家上级文字记忆表现的神经相关因素进行了研究。有音乐训练和没有音乐训练的参与者进行了一项口头记忆任务，首先对一系列错误的单词进行编码，然后默默地回忆尽可能多的单词。他们在单独的块中执行控制任务，包括纯音音高判断。扫描后再认测试显示，音乐家的记忆表现优于非音乐家。在记忆提取过程中，音乐家表现出显着更大的激活双边虽然左侧视觉皮层相对于音高判断基线。相比之下，在非音乐家中没有发现这种视觉皮层激活。在编码阶段没有观察到组间差异。研究结果与之前的一份报告相呼应，即在没有任何视觉感官刺激的情况下，盲人群体在言语记忆检索过程中视觉皮层激活，盲人群体也被认为具有上级言语记忆。这表明，视觉皮层可以被招募作为额外的记忆资源，并有助于在特殊情况下的上级言语记忆。而在盲人群体中，这种跨通道功能重组可能是由感觉剥夺引起的;在音乐家中，它可能是由音乐训练的长期性和要求性引起的，以尽可能多地使用可用的神经资源。(C)2010年IBRO。由爱思唯尔有限公司出版。保留所有权利。
As one major line of research on brain plasticity, many imaging studies have been conducted to identify the functional and structural reorganization associated with musical expertise. Based on previous behavioral research, the present study used functional magnetic resonance imaging to identify the neural correlates of superior verbal memory performance in musicians. Participants with and without musical training performed a verbal memory task to first encode a list of words auditorily delivered and then silently recall as many words as possible. They performed in separate blocks a control task involving pure tone pitch judgment. Post-scan recognition test showed better memory performance in musicians than non-musicians. During memory retrieval, the musicians showed significantly greater activations in bilateral though left-lateralized visual cortex relative to the pitch judgment baseline. In comparison, no such visual cortical activations were found in the non-musicians. No group differences were observed during the encoding stage. The results echo a previous report of visual cortical activation during verbal memory retrieval in the absence of any visual sensory stimulation in the blind population, who are also known to possess superior verbal memory. It is suggested that the visual cortex can be recruited to serve as extra memory resources and contributes to the superior verbal memory in special situations. While in the blind population, such cross-modal functional reorganization may be induced by sensory deprivation; in the musicians it may be induced by the long-term and demanding nature of musical training to use as much available neural resources as possible. (C) 2010 IBRO. Published by Elsevier Ltd. All rights reserved.