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Abstract:
The standard reinforcement learning view of the involvement of
neuromodulatory systems in instrumental conditioning includes a
rather straightforward conception of motivation as prediction of
sum future reward. Competition between actions is based on the
motivating characteristics of their consequent states in this
sense. Substantial, careful, experiments reviewed in Dickinson
& Balleine, [12,13] into the neurobiology and psychology of
motivation shows that this view is incomplete. In many cases,
animals are faced with the choice not between many different
actions at a given state, but rather whether a single response is
worth executing at all. Evidence suggests that the motivational
process underlying this choice has different psychological and
neural properties from that underlying action choice. We describe
and model these motivational systems, and consider the way they
interact.
References
[12] Dickinson, A., and Balleine, B. (1994). Motivational
control of goal-directed action.
Animal Learning and Behavior
22:1-18.
[13] Dickinson, A., and Balleine, B. (2001). The role of
learning in motivation. In CR Gallistel, editor,
Learning, Motivation and Emotion
, Volume 3 of Steven's
Handbook of Experimental Psychology
, Third Edition. New York, NY: Wiley.
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