Dopamine Induced Bistability Enhances Signal Processing in Spiny Neurons

Aaron J. Gruber, Sara A. Solla, James Charles Houk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Single unit activity in the striatum of awake monkeys shows a marked dependence on the expected reward that a behavior will elicit. We present a computational model of spiny neurons, the principal neurons of the striatum, to assess the hypothesis that direct neuromodulatory effects of dopamine through the activation of D1 receptors mediate the reward dependency of spiny neuron activity. Dopamine release results in the amplification of key ion currents, leading to the emergence of bistability, which not only modulates the peak firing rate but also introduces a temporal and state dependence of the model's response, thus improving the detectability of temporally correlated inputs.

Original languageEnglish (US)
Title of host publicationNIPS 2002
Subtitle of host publicationProceedings of the 15th International Conference on Neural Information Processing Systems
EditorsSuzanna Becker, Sebastian Thrun, Klaus Obermayer
PublisherMIT Press Journals
Pages165-172
Number of pages8
ISBN (Electronic)0262025507, 9780262025508
StatePublished - 2002
Event15th International Conference on Neural Information Processing Systems, NIPS 2002 - Vancouver, Canada
Duration: Dec 9 2002Dec 14 2002

Publication series

NameNIPS 2002: Proceedings of the 15th International Conference on Neural Information Processing Systems

Conference

Conference15th International Conference on Neural Information Processing Systems, NIPS 2002
Country/TerritoryCanada
CityVancouver
Period12/9/0212/14/02

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications
  • Information Systems

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