Multiple signals in anterior cingulate cortex.
Multiple signals in anterior cingulate cortex.
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DOI：
10.1016/j.conb.2015.12.007
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发表时间：
2016-04
影响因子：
5.7
通讯作者：
Rushworth M
中科院分区：
文献类型：
--
作者：
Kolling N;Behrens T;Wittmann MK;Rushworth M
前扣带皮层（ACC）有多种信号。即使在控制难度之后，ACC 活动也反映了行为改变的价值。即使在控制难度之后，ACC 活动也反映了内部模型的更新。前扣带皮层（ACC）的活动既与对行动方案的承诺（即使它与成本相关）也与探索或寻找替代行动方案有关。在这里，我们回顾了证据，证明这是由于 ACC 中存在多个信号，反映了信念和环境内部模型的更新以及选择价值的编码方面，包括环境提供的选择的平均值（“搜索价值”）。我们将此证据与有影响力的观点进行了对比，即 ACC 活动更好地描述为反映任务难度。对皮质神经网络特性的考虑解释了为什么 ACC 可能携带此类信号并且还表现出对任务难度的敏感性。
There are multiple signals in anterior cingulate cortex (ACC). ACC activity reflects value of behavioural change even after controlling for difficulty. ACC activity reflects updating of internal models even after controlling for difficulty. Activity in anterior cingulate cortex (ACC) has been linked both to commitment to a course of action, even when it is associated with costs, and to exploring or searching for alternative courses of action. Here we review evidence that this is due to the presence of multiple signals in ACC reflecting the updating of beliefs and internal models of the environment and encoding aspects of choice value, including the average value of choices afforded by the environment (‘search value’). We contrast this evidence with the influential view that ACC activity is better described as reflecting task difficulty. A consideration of cortical neural network properties explains why ACC may carry such signals and also exhibit sensitivity to task difficulty.