...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Neuroscience: The Official Journal of the Society for Neuroscience >Changes in brain activation during the acquisition of a multifrequency bimanual coordination task: from the cognitive stage to advanced levels of automaticity.
【24h】

Changes in brain activation during the acquisition of a multifrequency bimanual coordination task: from the cognitive stage to advanced levels of automaticity.

机译：在获取多频率的双向协调任务过程中大脑激活的变化：从认知阶段到高级自动化。

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

Little is known about activation changes reflecting overlearning, i.e., extensive motor training beyond asymptotic performance. Here we used functional magnetic resonance imaging to trace the neural shifts from an initial to a skilled (learning) and finally overlearned stage (automatization). Scanning occurred before training (PRE) and after 1 (MID) and 2 weeks (POST) of intensive practice on a new bimanual coordination task (>10,500 cycles). Kinematics revealed major improvements between PRE and MID sessions, whereas MID to POST session performance leveled off, indicative of learning and automatization, respectively. Imaging findings showed that activation decreased in bilateral opercular areas, bilateral ventrolateral prefrontal cortex, the right ventral premotor and supramarginal gyrus, and the anterior cingulate sulcus during the learning stage and in the supplementary motor area during the automatization stage. These changes are hypothesized to reflect decreases in attention-demanding sensory processing, as well as suppression of preferred coordination tendencies as a prelude to acquiring new coordination modes. Conversely, learning-related increases were observed in the primary motor cortex (M1), posterior cingulate zone (PCZ), putamen, and right anterior cerebellum. Importantly, both M1 and PCZ activation decreased again to initial level (PRE) during automated performance (POST). Only the putamen and anterior cerebellum remained more activated across both learning and automatization stages, supporting their crucial role in long-term motor memory formation for coordination tasks.
机译：关于反映过度学习的激活变化知之甚少，即超越渐进性能的广泛运动训练。在这里，我们使用功能磁共振成像来追踪从最初到熟练（学习）以及最终过度学习阶段（自动化）的神经转移。在一项新的双向协调任务（> 10,500个周期）的强化练习之前（PRE）以及强化训练后的1（MID）和2周（POST）之后进行扫描。运动学揭示了PRE和MID会话之间的重大改进，而MID到POST会话的性能趋于平稳，分别表示学习和自动化。影像学发现表明，在学习阶段以及在自动化阶段，在运动的辅助运动区，双侧腹侧前额叶皮层，双侧腹侧前额叶皮层，右腹前运动和上弓回以及前扣带回沟的激活减少。假设这些变化反映了注意注意力的感觉处理的减少，以及抑制了优选的协调倾向作为获得新的协调模式的前奏。相反，在初级运动皮层（M1），后扣带区（PCZ），壳状体和右前小脑中观察到与学习有关的增加。重要的是，在自动执行（POST）期间，M1和PCZ激活都再次降低到初始水平（PRE）。在学习和自动化阶段，只有壳核和小脑前部仍被激活，这支持了它们在协调任务的长期运动记忆形成中的关键作用。

著录项

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