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Title:Reinforcement Learning and the Error -Related Negativity: A Computational and Neurophysiological Investigation
Author(s):Holroyd, Clay Brian
Doctoral Committee Chair(s):Coles, Michael G.H.
Department / Program:Neuroscience
Discipline:Neuroscience
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Psychology, Psychobiology
Abstract:This thesis presents a unified account of two neural systems concerned with the development and expression of adaptive behaviors: a mesencephalic dopamine system for reinforcement learning, and a "generic" error-processing system associated with anterior cingulate cortex. The existence of the error-processing system has been inferred from the "Error-Related Negativity," a component of the event-related brain potential elicited when human subjects commit errors in reaction-time tasks. It is proposed that the Error-Related Negativity is generated when a negative reinforcement learning signal is conveyed to anterior cingulate cortex via the mesencephalic dopamine system, and that this signal is utilized by anterior cingulate cortex to modify performance on the task at hand. Support for this proposal is provided using both computational modelling and psychophysiological experimentation.
Issue Date:2001
Type:Text
Language:English
Description:181 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
URI:http://hdl.handle.net/2142/82547
Other Identifier(s):(MiAaPQ)AAI9996640
Date Available in IDEALS:2015-09-25
Date Deposited:2001


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