Cited by 131Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesNeuroscience and Neuropharmacology Research

Electrical stimulation of reward sites in the ventral tegmental area increases dopamine transmission in the nucleus accumbens of the rat

FIORINO, D, COURY, A, FIBIGER, H, PHILLIPS, A·1993·Behavioural Brain Research

Abstract

In vivo microdialysis with HPLC-ED was used to measure dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA) in the nucleus accumbens of the rat, prior, during, and after 15-min periods of electrical brain stimulation at sites in the ventral tegmental area (VTA) that supported intracranial self-stimulation (ICSS). In the first experiment, both ICSS and yoked stimulation of the VTA evoked significant increases in extracellular concentrations of DA, its metabolites, and 5-HIAA. Comparable results from ICSS and yoked groups were interpreted as evidence that the rewarding properties of VTA stimulation were a causal factor in the elevated DA transmission in the nucleus accumbens, rather than intense operant behavior. Further evidence for this hypothesis came from a second set of data in which changes in extracellular DA levels during the measurement of rate/intensity functions for ICSS were positively correlated. 5-HIAA concentrations also increased during ICSS but these changes were not correlated with either ICSS rate or current intensity, suggesting that changes in serotonin metabolism were unlikely to subserve brain stimulation reward in the VTA. These results add to the growing body of evidence linking changes in extracellular DA in the mesolimbic DA system with both brain stimulation reward and the conditioned and unconditioned rewarding effects of biologically relevant stimuli.

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Crossref · 10.1016/0166-4328(93)90109-4

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  • Electrical brain stimulation at the medial forebrain bundle/VTA is rewarding and triggers dopamine release in the ventral striatum and investigatory responses of sniffing.

    “Electrical brain stimulation at the medial forebrain bundle/VTA is rewarding and triggers dopamine release in the ventral striatum (Fiorino et al., 1993; Garris et al., 1999; Cheer et al., 2005; Hernandez et al., 2006) and investigatory responses of sniffing (Clarke and Trowill, 1971; Ikemoto and Panksepp, 1994).”

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Authors
FIORINO, D., COURY, A., FIBIGER, H., & PHILLIPS, A.
Affiliations
University of British Columbia (CA)
Corresponding author
PHILLIPS, A
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
1993-06-30
Volume
55
Issue
2
Pages
131-141
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2076287600
Cited by
131
References
27
Citations by year
2025: 3 · 2024: 1 · 2022: 2 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 1 · 2016: 2 · 2015: 5 · 2014: 3 · 2013: 2 · 2012: 3
FWCI
1.80
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
ventral tegmental area, nucleus accumbens, dopamine signaling, intracranial self-stimulation, electrical brain stimulation, reward, mesolimbic dopamine system, 5-hydroxyindoleacetic acid, serotonin metabolism, DOPAC, homovanillic acid, rate-intensity function
MeSH terms
Animals, Brain Mapping, Dominance, Cerebral, Dopamine, Electric Stimulation, Homovanillic Acid, Hydroxyindoleacetic Acid, Male, Motivation, Neural Pathways, Synaptic Transmission, Nucleus Accumbens, Reward, Self Stimulation, Serotonin, Tegmentum Mesencephali, 3,4-Dihydroxyphenylacetic Acid, Rats

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