Cited by 1,106Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNeural and Behavioral Psychology Studies

Afferent modulation of dopamine neuron firing differentially regulates tonic and phasic dopamine transmission

Floresco, Stan B, West, Anthony R, Ash, Brian, Moore, Holly, Grace, Anthony A·2003·Nature Neuroscience

Abstract

The mesolimbic dopamine system is centrally involved in reward and goal-directed behavior, and it has been implicated in multiple psychiatric disorders. Understanding the mechanism by which dopamine participates in these activities requires comprehension of the dynamics of dopamine release. Here we report dissociable regulation of dopamine neuron discharge by two separate afferent systems in rats; inhibition of pallidal afferents selectively increased the population activity of dopamine neurons, whereas activation of pedunculopontine inputs increased burst firing. Only the increase in population activity increased ventral striatal dopamine efflux. After blockade of dopamine reuptake, however, enhanced bursting increased dopamine efflux three times more than did enhanced population activity. These results provide insight into multiple regulatory systems that modulate dopamine system function: burst firing induces massive synaptic dopamine release, which is rapidly removed by reuptake before escaping the synaptic cleft, whereas increased population activity modulates tonic extrasynaptic dopamine levels that are less influenced by reuptake.

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Crossref · 10.1038/nn1103

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40 of 40 references verified0 citation errors · 0 not checkable

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  • Burst firing in dopaminergic neurons is potently driven by the brainstem pedunculopontine tegmentum, which provides a glutamatergic input acting via NMDARs.

    “Burst firing in dopaminergic neurons is potently driven by the brainstem pedunculopontine tegmentum (PPTg), which provides a glutamatergic input that acts via NMDARs ([39, 40] see Box 3).”
  • The PPTg regulates burst firing of dopamine cells rather than their tonic resting activity.

    “The PPTg regulates burst firing of dopamine cells rather than their tonic resting activity [[39]].”

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Authors
Floresco, S. B., West, A. R., Ash, B., Moore, H., & Grace, A. A.
Affiliations
University of Pittsburgh (US)
Corresponding author
  • Floresco, Stan B
  • Grace, Anthony A
Venue
Nature Neuroscience
Published
2003-08-03
Volume
6
Issue
9
Pages
968-973
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1994984635
Cited by
1,106
References
40
Citations by year
2026: 23 · 2025: 33 · 2024: 37 · 2023: 33 · 2022: 49 · 2021: 43 · 2020: 46 · 2019: 50 · 2018: 67 · 2017: 44 · 2016: 61 · 2015: 54 · 2014: 73 · 2013: 55 · 2012: 60
FWCI
13.17
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (F32MH011305)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
dopaminergic neurons, mesolimbic dopamine system, pedunculopontine nucleus, burst firing, tonic dopamine release, dopamine reuptake, ventral striatum, dopamine efflux, population activity, reward
MeSH terms
Afferent Pathways, Animals, Dopamine, Male, Mesencephalon, Synaptic Transmission, Neurons, Nucleus Accumbens, Rats, Sprague-Dawley, Ventral Tegmental Area, GABA Antagonists, Rats

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