Off-line learning of motor skill memory: A double dissociation of goal and movement
Off-line learning of motor skill memory: A double dissociation of goal and movement
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DOI：
10.1073/pnas.0506072102
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发表时间：
2005-12-13
影响因子：
11.1
通讯作者：
Robertson, EM
中科院分区：
文献类型：
--
作者：
Cohen, DA;Pascual-Leone, A;Robertson, EM
获得一项新技能需要同时学习一项任务的多个方面。例如，学习钢琴奏鸣曲需要学习音符，并能够通过学习手指运动的适当顺序来实现这一目标。在练习之后，技能在巩固期间继续离线发展。在这里，我们展示了程序性记忆的不同方面在巩固过程中被分开处理：只有运动序列在白天得到增强;而只有目标在晚上的睡眠中得到增强。这种双重分离表明，不同的系统，增强程序性记忆的不同方面，支持巩固过程中的改善。巩固并不是一个单一的过程;相反，离线学习有多种途径，这些不同机制的参与取决于何时进行巩固。
Acquiring a new skill requires learning multiple aspects of a task simultaneously. For example, learning a piano sonata requires learning the musical notes and being able to implement this goal by learning the appropriate sequence of finger movements. After practice, skill continues to develop off-line during a period of consolidation. Here we show that different aspects of a procedural memory are processed separately during consolidation: Only the movement sequence is enhanced over the day; whereas only the goal is enhanced over a night of sleep. This double dissociation suggests that distinct systems, enhancing different aspects of a procedural memory, support improvements during consolidation. Consolidation is not a single process; instead, there are multiple routes to off-line learning, and the engagement of these distinct mechanisms is determined by when consolidation takes place.