论文标题
额叶有效连通性随着任务需求和任务时间的增加而增加：猕猴电型的动态因果模型
Frontal effective connectivity increases with task demands and time on task: a Dynamic Causal Model of electrocorticogram in macaque monkeys
论文作者
论文摘要
我们将动态因果模型应用于来自两只猕猴的电皮质图记录，执行解决问题的任务，使工作记忆与工作记忆相关，并引起了任务效果。因此，我们提供了一个计算说明，以说明额叶网络的两个区域内有效连通性的变化，背外侧前额叶皮层和支撑前运动区域。我们发现，随着任务需求增加，随着实验会议的进行，两个区域之间的正相连接增加了强度。任务需求和时间对任务的影响的相似之处使我们能够以增加认知疲劳的注意力分配来解释正面连通性的变化。
We apply Dynamic Causal Models to electrocorticogram recordings from two macaque monkeys performing a problem-solving task that engages working memory, and induces time-on-task effects. We thus provide a computational account of changes in effective connectivity within two regions of the fronto-parietal network, the dorsolateral prefrontal cortex and the pre-supplementary motor area. We find that forward connections between the two regions increased in strength when task demands increased, and as the experimental session progressed. Similarities in the effects of task demands and time on task allow us to interpret changes in frontal connectivity in terms of increased attentional effort allocation that compensates cognitive fatigue.
