The role of adenosine in the ventral striatal circuits regulating behavioral activation and effort-related decision making: Importance for normal and pathological aspects of motivation

John D. Salamone, Merce Correa, Patrick A. Randall, Eric J. Nunes, Marta Pardo, Laura Lopez-Cruz

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Abstract

Motivated behavior can be characterized by a high degree of activity, vigor, and persistence. Brain dopamine (DA), particularly in the nucleus accumbens, has been implicated in activational aspects of motivation and effort-related processes. Accumbens DA depletions reduce the tendency of rats to work for food, and alter effort-related decision making, but leave aspects of food motivation such as appetite intact. Recent evidence indicates that the purine neuromodulator adenosine, largely through actions on adenosine A2A receptors, also participates in regulating effort-related processes. Intra-accumbens injections of adenosine A2A agonists produce effects that are similar to those produced by accumbens DA depletion or antagonism. Furthermore, systemic or intra-accumbens injections of adenosine A2A receptor antagonists can reverse the effects of DA D2 antagonists on effort-related choice behavior. In contrast, adenosine A1 receptor antagonists fail to reverse these motivational effects of DA D2 antagonism. These studies have implications for understanding the potential role of adenosine in the development and treatment of energy-related motivational symptoms such as anergia and fatigue in depression and other disorders.

Original languageEnglish (US)
Title of host publicationAdenosine
Subtitle of host publicationA Key Link between Metabolism and Brain Activity
PublisherSpringer New York
Pages493-512
Number of pages20
ISBN (Electronic)9781461439035
ISBN (Print)1461439027, 9781461439028
DOIs
Publication statusPublished - Nov 1 2013

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All Science Journal Classification (ASJC) codes

  • Medicine(all)
  • Neuroscience(all)

Cite this

Salamone, J. D., Correa, M., Randall, P. A., Nunes, E. J., Pardo, M., & Lopez-Cruz, L. (2013). The role of adenosine in the ventral striatal circuits regulating behavioral activation and effort-related decision making: Importance for normal and pathological aspects of motivation. In Adenosine: A Key Link between Metabolism and Brain Activity (pp. 493-512). Springer New York. https://doi.org/10.1007/978-1-4614-3903-5_23