2013年7月29日月曜日

The Expected Value of Control: An Integrative Theory of Anterior Cingulate Cortex Function

Amitai Shenhav, Matthew M. Botvinick, Jonathan D. Cohen
Neuron, Volume 79, Issue 2, 217-240, 24 July 2013

背側前帯状皮質(dACC)の機能についての総説論文。
報酬処理、行動選択、行動結果のモニタリングなどに関わっているとされているが、結局は?
「何をどれくらいコントロールするのか?をそれぞれの期待報酬(expected value of control)を考慮したうえで決める」ことに関わっているとすると、先行研究の雑多な結果が統一的に解釈できる。

The dorsal anterior cingulate cortex (dACC) has a near-ubiquitous presence in the neuroscience of cognitive control. It has been implicated in a diversity of functions, from reward processing and performance monitoring to the execution of control and action selection. Here, we propose that this diversity can be understood in terms of a single underlying function: allocation of control based on an evaluation of the expected value of control (EVC). We present a normative model of EVC that integrates three critical factors: the expected payoff from a controlled process, the amount of control that must be invested to achieve that payoff, and the cost in terms of cognitive effort. We propose that dACC integrates this information, using it to determine whether, where and how much control to allocate. We then consider how the EVC model can explain the diverse array of findings concerning dACC function.

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