Cerebellum engages in automation of verb-generation skill.
Cerebellum engages in automation of verb-generation skill.
复制标题
小脑参与动词生成技能的自动化。
DOI：
10.1142/s0219635214500010
复制
发表时间：
2014
影响因子：
1.8
通讯作者：
Bandettini,PeterA
中科院分区：
文献类型：
--
作者：
Yang,Zhi;Wu,Paula;Weng,Xuchu;Bandettini,PeterA
许多研究表明，小脑参与了特定项目的关联，这是一种外显学习形式。然而，很少有人证明小脑参与非运动认知任务的自动化。应用功能磁共振成像的重复动词生成任务，我们试图区分小脑参与学习特定项目的名词-动词联想和自动化的动词生成技能。同一组名词在六个动词生成块中重复，以便受试者练习为名词生成动词。这种做法之后是一个新的块与不同的一套名词。小脑蚓部（IV/V）和右侧小脑小叶VI显示减少激活后的做法，激活在右侧小脑脚我是显着低于在新的挑战比在初始的动词生成任务。此外，在这个区域的激活过程中，良好的实践块与行为表现的改善，在良好的实践和新的块强烈相关，这表明它的作用，在一般的心理技能的学习，而不是具体的实践名词-动词对。因此，小脑既处理外显的言语联想学习，也处理认知任务的自动化。不同的小脑区域在这个过程中占主导地位：小叶VI在收购项目特定的协会，和脚I在自动化的动词生成技能，通过实践。
Numerous studies have shown cerebellar involvement in item-specific association, a form of explicit learning. However, very few have demonstrated cerebellar participation in automation of non-motor cognitive tasks. Applying fMRI to a repeated verb-generation task, we sought to distinguish cerebellar involvement in learning of item-specific noun–verb association and automation of verb generation skill. The same set of nouns was repeated in six verb-generation blocks so that subjects practiced generating verbs for the nouns. The practice was followed by a novel block with a different set of nouns. The cerebellar vermis (IV/V) and the right cerebellar lobule VI showed decreased activation following practice; activation in the right cerebellar Crus I was significantly lower in the novel challenge than in the initial verb-generation task. Furthermore, activation in this region during well-practiced blocks strongly correlated with improvement of behavioral performance in both the well-practiced and the novel blocks, suggesting its role in the learning of general mental skills not specific to the practiced noun–verb pairs. Therefore, the cerebellum processes both explicit verbal associative learning and automation of cognitive tasks. Different cerebellar regions predominate in this processing: lobule VI during the acquisition of item-specific association, and Crus I during automation of verb-generation skills through practice.