Interactions between frontal cortex and basal ganglia in working memory: A computational model
Interactions between frontal cortex and basal ganglia in working memory: A computational model
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DOI：
10.3758/cabn.1.2.137
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发表时间：
2001-06-01
影响因子：
2.9
通讯作者：
O'Reilly, Randall C.
中科院分区：
文献类型：
--
作者：
Frank, Michael J.;Loughry, Bryan;O'Reilly, Randall C.
额叶皮层和基底神经节通过一个相对较好理解和复杂的相互连接系统相互作用。在运动功能的背景下，这些相互联系可以被理解为对额叶运动行动计划的解除抑制或“释放制动器”：基底神经节检测执行运动动作的适当背景，并使额叶皮层能够在适当的时间执行这些动作。我们建立在这个想法的工作记忆域通过使用计算神经网络模型的电路。在我们的模型中，额叶皮层表现出强大的主动维护，而基底神经节贡献了一个选择性的，动态的门控功能，使额叶记忆表征快速更新的任务相关的方式。我们将该模型应用于一个新版本的连续性能任务，需要子程序样的选择性工作记忆更新和比较和对比我们的模型与其他现有的模型和理论的额皮质基底神经节的相互作用。
The frontal cortex and the basal ganglia interact via a relatively well understood and elaborate system of interconnections. In the context of motor function, these interconnections can be understood as disinhibiting, or "releasing the brakes," on frontal motor action plans: The basal ganglia detect appropriate contexts for performing motor actions and enable the frontal cortex to execute such actions at the appropriate time. We build on this idea in the domain of working memory through the use of computational neural network models of this circuit. In our model, the frontal cortex exhibits robust active maintenance, whereas the basal ganglia contribute a selective, dynamic gating function that enables frontal memory representations to be rapidly updated in a task-relevant manner. We apply the model to a novel version of the continuous performance task that requires subroutine-like selective working memory updating and compare and contrast our model with other existing models and theories of frontal-cortex-basal-ganglia interactions.