A Bayesian formulation of behavioral control.
314 - 328.
Helplessness, a belief that the world is not subject to behavioral control, has long been central to our understanding of depression, and has influenced cognitive theories, animal models and behavioral treatments. However, despite its importance, there is no fully accepted definition of helplessness or behavioral control in psychology or psychiatry, and the formal treatments in engineering appear to capture only limited aspects of the intuitive concepts. Here, we formalize controllability in terms of characteristics of prior distributions over affectively charged environments. We explore the relevance of this notion of control to reinforcement learning methods of optimising behavior in such environments and consider how apparently maladaptive beliefs can result from normative inference processes. These results are discussed with reference to depression and animal models thereof. (C) 2009 Elsevier B.V. All rights reserved.
|Title:||A Bayesian formulation of behavioral control|
|Keywords:||Helplessness, Depression, Computational, Bayesian, Computational psychiatry, Animal behavior, Learned helplessness, Reinforcement learning, Controllability, Animal models of depression, DORSAL RAPHE NUCLEUS, LEARNED HELPLESSNESS, ANIMAL-MODELS, MAJOR DEPRESSION, STRESSOR CONTROLLABILITY, COMPUTATIONAL APPROACH, PREFRONTAL CORTEX, INESCAPABLE SHOCK, INDUCED ANHEDONIA, DOPAMINE|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Life Sciences > Gatsby Computational Neuroscience Unit|
Archive Staff Only