Orbitofrontal Cortex as a Cognitive Map of Task Space

Citation:

Wilson, R. C., Takahashi, Y. K., Schoenbaum, G., & Niv, Y. (2014). Orbitofrontal Cortex as a Cognitive Map of Task Space. D. D. Lee, U. V. Luxburg, I. Guyon, & R. Garnett (Ed.), Neuron , 81 (2), 267–279 . Salt Lake City, Utah, Elsevier Inc.

Date Published:

jan

ISSN:

08966273

ISBN Number:

9780123741769

Abstract:

Orbitofrontal cortex (OFC) has long been known to play an important role in decision making. However, the exact nature of that role has remained elusive. Here, we propose a unifying theory of OFC function. We hypothesize that OFC provides an abstraction of currently available information in the form of a labeling of the current task state, which is used for reinforcement learning (RL) elsewhere in the brain. This function is especially critical when task states include unobservable information, for instance, from working memory. We use this framework to explain classic findings in reversal learning, delayed alternation, extinction, and devaluation as well as more recent findings showing the effect of OFC lesions on the firing of dopaminergic neurons in ventral tegmental area (VTA) in rodents performing an RL task. In addition, we generate a number of testable experimental predictions that can distinguish our theory from other accounts of OFC function. ?? 2014 Elsevier Inc.

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DOI:

10.1016/j.neuron.2013.11.005
Last updated on 12/11/2019