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2002
Springer

Opponent interactions between serotonin and dopamine

10 years 3 months ago
Opponent interactions between serotonin and dopamine
Anatomical and pharmacological evidence suggests that the dorsal raphe serotonin system and the ventral tegmental and substantia nigra dopamine system may act as mutual opponents. In the light of the temporal difference model of the involvement of the dopamine system in reward learning, we consider three aspects of motivational opponency involving dopamine and serotonin. We suggest that a tonic serotonergic signal reports the long-run average reward rate as part of an average-case reinforcement learning model; that a tonic dopaminergic signal reports the long-run average punishment rate in a similar context; and finally speculate that a phasic serotonin signal might report an ongoing prediction error for future punishment. q 2002 Elsevier Science Ltd. All rights reserved.
Nathaniel D. Daw, Sham Kakade, Peter Dayan
Added 22 Dec 2010
Updated 22 Dec 2010
Type Journal
Year 2002
Where NN
Authors Nathaniel D. Daw, Sham Kakade, Peter Dayan
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