Hierarchical cognitive control deficits following damage to the human frontal lobe.

Hierarchical cognitive control deficits following damage to the human frontal lobe.
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DOI:
10.1038/nn.2277
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发表时间:
2009-04
影响因子:
25
通讯作者:
D'Esposito, Mark
D'Esposito, Mark
中科院分区:
医学1区
文献类型:
--
作者:
Badre, David;Hoffman, Joshua;Cooney, Jeffrey W.;D'Esposito, Mark

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认知控制使我们能够对抽象的行为做出决定,比如是否给朋友发电子邮件或打电话,并根据我们的目标和知识选择产生这些行为所需的具体运动程序。额叶对于所有抽象层次的认知控制都是必要的。最近的神经影像学数据激发了这样一种假设,即额叶是分层组织的,因此当在更具体的行动水平上做出决定时,控制是在渐进的尾侧区域得到支持的。我们发现,额叶损伤损害行动决策的抽象水平,这是依赖于病变的位置(喙病变影响更抽象的任务,而尾侧病变影响更具体的任务),除了损害任务需要更多,但不是更少,抽象的动作控制。此外,两个相邻区域的控制水平的基础上区分,与以前的功能磁共振成像结果一致。这些结果为额叶的喙尾分层组织提供了直接证据。
Cognitive control permits us to make decisions about abstract actions, such as whether to e-mail versus call a friend, and to select the concrete motor programs required to produce those actions, based on our goals and knowledge. The frontal lobes are necessary for cognitive control at all levels of abstraction. Recent neuroimaging data have motivated the hypothesis that the frontal lobes are organized hierarchically, such that control is supported in progressively caudal regions as decisions are made at more concrete levels of action. We found that frontal damage impaired action decisions at a level of abstraction that was dependent on lesion location (rostral lesions affected more abstract tasks, whereas caudal lesions affected more concrete tasks), in addition to impairing tasks requiring more, but not less, abstract action control. Moreover, two adjacent regions were distinguished on the basis of the level of control, consistent with previous functional magnetic resonance imaging results. These results provide direct evidence for a rostro-caudal hierarchical organization of the frontal lobes.
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