NDLI: Modeling the Value of Strategic Actions in the Superior Colliculus

Content Provider	PubMed Central
Author	Thevarajah, Dhushan Webb, Ryan Ferrall, Christopher Dorris, Michael C.
Copyright Year	2010
Abstract	In learning models of strategic game play, an agent constructs a valuation (action value) over possible future choices as a function of past actions and rewards. Choices are then stochastic functions of these action values. Our goal is to uncover a neural signal that correlates with the action value posited by behavioral learning models. We measured activity from neurons in the superior colliculus (SC), a midbrain region involved in planning saccadic eye movements, while monkeys performed two saccade tasks. In the strategic task, monkeys competed against a computer in a saccade version of the mixed-strategy game ”matching-pennies”. In the instructed task, saccades were elicited through explicit instruction rather than free choices. In both tasks neuronal activity and behavior were shaped by past actions and rewards with more recent events exerting a larger influence. Further, SC activity predicted upcoming choices during the strategic task and upcoming reaction times during the instructed task. Finally, we found that neuronal activity in both tasks correlated with an established learning model, the Experience Weighted Attraction model of action valuation (Camerer and Ho, 1999). Collectively, our results provide evidence that action values hypothesized by learning models are represented in the motor planning regions of the brain in a manner that could be used to select strategic actions.
Related Links	http://dx.doi.org/10.3389/neuro.08.057.2009
Starting Page	57
File Format	PDF
ISSN	16625153
e-ISSN	16625153
Journal	Frontiers in Behavioral Neuroscience
Volume Number	3
Language	English
Publisher	Frontiers Research Foundation
Publisher Date	2009-01-01
Access Restriction	Open
Rights Holder	Frontiers Research Foundation
Subject Keyword	Cognitive Neuroscience Behavioral Neuroscience Neuropsychology and Physiological Psychology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cognitive Neuroscience Behavioral Neuroscience Neuropsychology and Physiological Psychology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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