Volatility Facilitates Value Updating in the Prefrontal Cortex
| Autor: | Bart Massi, Christopher H. Donahue, Daeyeol Lee |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine General Neuroscience Decision Making Prefrontal Cortex Macaca mulatta Article Dorsolateral prefrontal cortex 03 medical and health sciences Neural activity 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure Reward medicine Animals Learning Orbitofrontal cortex Volatility (finance) Psychology Prefrontal cortex Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Neuron. 99:598-608.e4 |
| ISSN: | 0896-6273 |
| Popis: | Adaptation of learning and decision-making might depend on the regulation of activity in the prefrontal cortex. Here, we examined how volatility of reward probabilities influences learning and neural activity in the primate prefrontal cortex. We found that animals selected recently rewarded targets more often when reward probabilities of different options fluctuated across trials than when they were fixed. Additionally, neurons in the orbitofrontal cortex displayed more sustained activity related to the outcomes of their previous choices when reward probabilities changed over time. Such volatility also enhanced signals in the dorsolateral prefrontal cortex related to the current, but not the previous, location of the previously rewarded target. These results suggest that prefrontal activity related to choice and reward is dynamically regulated by the volatility of the environment, and underscore the role of the prefrontal cortex in identifying aspects of the environment that are responsible for previous outcomes and should be learned. |
| Databáze: | OpenAIRE |
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