Cited by 399Nicotinic Acetylcholine Receptors StudyNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Nicotinic effects on the firing pattern of midbrain dopamine neurons

GRENHOFF, J., ASTON‐JONES, G., SVENSSON, T. H.·1986·Acta Physiologica Scandinavica

Abstract

The effects of systemic administration of nicotine or the nicotinic antagonist mecamylamine on the midbrain dopamine (DA) systems of the rat were studied with single cell recording techniques. Dopamine cells of the zona compacta, substantia nigra (ZC-SN) and the ventral tegmental area (VTA) were identified by their characteristic action potentials, antidromic stimulation methodology and conventional histological procedures. Firing rates as well as firing patterns were determined from computer-generated interspike interval histograms describing burst-firing in relation to single-spike firing. A larger proportion of burst-firing DA cells was found in the VTA when compared with the ZC-SN area. (-)-Nicotine bitartrate (0.5 mg kg-1 i.p.) not only increased the firing rate of ZC-SN neurons but also the amount of burst firing of the ZC-SN neurons and VTA neurons, respectively. Mecamylamine HCl (4.0 mg kg-1 i.p.) decreased the firing rate of VTA cells which, in principle, indicates a tonic nicotinic input in this area. The increase in firing rate of central DA neurons following nicotine administration was found to be associated with increased bursting of the burst firing cells whereas, in contrast, the non-bursting neurons did not respond with burst-firing. Generally, the correlation between nicotine induced changes in firing rate and in burst-firing activity, respectively, was found to be low for midbrain DA neurons. These observations, in conjunction with the previous demonstration of nicotinic receptors in these areas, indicate the existence of a nicotinic input, specifically regulating the firing pattern of these central DA cells. This neuromodulatory effect of nicotine may be significant for its behavioural stimulant action.(ABSTRACT TRUNCATED AT 250 WORDS)

Integrity signals

Registry

Crossref · 10.1111/j.1748-1716.1986.tb07988.x

Cites

32 of 32 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
GRENHOFF, J., ASTON‐JONES, G., & SVENSSON, T. H.
Affiliations
Karolinska Institutet (SE)
Corresponding author
SVENSSON, T. H.
Venue
Acta Physiologica Scandinavica
Publisher
Wiley
Published
1986-11
Volume
128
Issue
3
Pages
351-358
ISSN
  • 0001-6772 (ISSN-L)
  • 1365-201X
OpenAlex
W1974840438
Cited by
399
References
32
Citations by year
2025: 1 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 4 · 2019: 8 · 2018: 7 · 2017: 4 · 2016: 12 · 2015: 6 · 2014: 10 · 2013: 9 · 2012: 9
FWCI
1.87
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Physiologica Scandinavica (publishedVersion)
  • PubMed (publishedVersion)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotine, nicotinic acetylcholine receptors, dopaminergic neurons, midbrain dopamine system, substantia nigra, ventral tegmental area, burst firing, neuronal firing rate, mecamylamine
MeSH terms
Animals, Behavior, Animal, Male, Mecamylamine, Mesencephalon, Neurons, Nicotine, Rats, Inbred Strains, Receptors, Dopamine, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review