...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Learning new color names produces rapid increase in gray matter in the intact adult human cortex
【24h】

Learning new color names produces rapid increase in gray matter in the intact adult human cortex

机译：学习新的颜色名称会使完整的成年人类皮层中的灰质迅速增加

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The human brain has been shown to exhibit changes in the volume and density of gray matter as a result of training over periods of several weeks or longer. We show that these changes can be induced much faster by using a training method that is claimed to simulate the rapid learning of word meanings by children. Using whole-brain magnetic resonance imaging (MRI) we show that learning newly defined and named subcategories of the universal categories green and blue in a period of 2 h increases the volume of gray matter in V2/3 of the left visual cortex, a region known to mediate color vision. This pattern of findings demonstrates that the anatomical structure of the adult human brain can change very quickly, specifically during the acquisition of new, named categories. Also, prior behavioral and neuroimaging research has shown that differences between languages in the boundaries of named color categories influence the categorical perception of color, as assessed by judgments of relative similarity, by response time in alternative forced-choice tasks, and by visual search. Moreover, further behavioral studies (visual search) and brain imaging studies have suggested strongly that the categorical effect of language on color processing is left-lateralized, i.e., mediated by activity in the left cerebral hemisphere in adults (hence "lateralized Whor-fian" effects). The present results appear to provide a structural basis in the brain for the behavioral and neurophysiologically observed indices of these Whorfian effects on color processing.
机译：由于数周或更长时间的训练，人脑显示出灰质的体积和密度发生变化。我们表明，通过使用一种训练方法可以更快地诱发这些变化，该方法被称为模拟儿童对单词含义的快速学习。使用全脑磁共振成像（MRI），我们发现在2小时内学习新定义和命名的通用类别绿色和蓝色子类别会增加左视皮层V2 / 3（该区域）中灰质的体积已知能够介导色觉。这种发现模式表明，成人大脑的解剖结构可以非常快速地发生变化，特别是在获取新的命名类别的过程中。同样，先前的行为和神经影像学研究表明，在命名的颜色类别范围内，语言之间的差异会影响颜色的分类感知，这是通过相对相似性判断，通过替代性强制选择任务的响应时间以及通过视觉搜索来评估的。此外，进一步的行为研究（视觉搜索）和脑成像研究强烈表明，语言对颜色处理的分类作用是左偏的，即是由成人左脑半球的活动介导的（因此“偏偏的Who夫”效果）。目前的结果似乎为大脑中这些Whorfian效应对色彩处理的行为和神经生理学观察指标提供了结构基础。

著录项

  • 来源
  • 作者

    Veronica Kwok; Zhendong Niu; Paul Kay; Ke Zhou; Lei Mo; Zhen Jin; Kwok-Fai So; Li Hai Tan;

  • 作者单位

    State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong,China,Department of Linguistics, University of Hong Kong, Hong Kong,China;

    School of Computer Science and Technology, Beijing Institute of Technology, Beijing 100081, China;

    Department of Linguistics, University of California, Berkeley, CA 94720,International Computer Science Institute, Berkeley, CA 94704;

    State Key Laboratory of Brain and Cognitive Science,Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China;

    Center for the Study of Applied Psychology, South China Normal University,Guangzhou 510631, China;

    MRI Division, Beijing 306 Hospital, Beijing 100101, China;

    State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong,China,Department of Anatomy, University of Hong Kong, Hong Kong,China,State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong,China;

    State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong,China,Department of Linguistics, University of Hong Kong, Hong Kong,China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    neuro-plasticity; brain development; whorf hypothesis; anatomy;

    机译：神经可塑性;大脑发育;人假说;解剖学;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号