Corticolimbic mechanisms in the control of trial and error learning.
Corticolimbic mechanisms in the control of trial and error learning.
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DOI：
10.1016/j.brainres.2008.09.084
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发表时间：
2009-01-09
期刊：
影响因子：
2.9
通讯作者：
Tucker DM
中科院分区：
文献类型：
--
作者：
Luu P;Shane M;Pratt NL;Tucker DM
随着学习的进展，人类和动物的研究表明，在学习的早期，前额执行系统强烈参与其中，而后方的监控系统随着学习的进展而在线。在之前的一项研究中，我们使用密集阵列EEG方法来描述这两个系统的参与，因为人类参与者通过反复试验学习将手动反应与任意数字代码联系起来。结果与双系统学习模型基本一致，表明随着学习的进行，这两个系统都很重要。在本研究中，我们通过检查大脑对错误试验的反应以及这两个系统对反馈处理的反应来复制和扩展先前的发现。结果证实了这两个系统在学习中的作用，但它们也提供了对它们的组成和功能的更复杂的看法。额叶系统包括早期参与学习的腹侧(额下回、腹侧扣带回、前颞叶)皮质边缘结构，而后部系统包括参与学习较晚的背侧(前扣带回、后扣带回和内侧颞叶)皮质边缘环路。重要的是，每个系统在学习过程中的参与取决于学习任务中事件的性质。
As learning progresses, human and animal studies suggest that a frontal executive system is strongly involved early in learning, whereas a posterior monitoring and control system comes online as learning progress. In a previous study, we employed dense array EEG methodology to delineate the involvement of these two systems as human participants learn, through trial and error, to associate manual responses with arbitrary digit codes. The results were generally consistent with the dual-system learning model, pointing to the importance of both systems as learning progressed. In the present study, we replicate and extend the previous findings by examining the brain responses to error trials as well as examine the activity of these two systems’ response to feedback processing. The results confirmed the role of these two systems in learning but they also provide a more complex view of their makeup and function. The frontal system includes ventral (inferior frontal gyrus, ventral anterior cingulate cortex, anterior temporal lobe) corticolimbic structures that are involved early in learning whereas the posterior system includes dorsal (anterior and posterior cingulate and medial temporal lobe) corticolimbic circuits that are engaged later in learning. Importantly, the engagement of each system during the course of learning is dependent on the nature of the events within the learning task.
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