Cited by 139Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNeurological disorders and treatments

Structural correlates of heterogeneous in vivo activity of midbrain dopaminergic neurons

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Henny, Pablo, Brown, Matthew T C, Northrop, Augustus, Faunes, Macarena, Ungless, Mark A, Magill, Peter J, Bolam, J Paul·2012·Nature Neuroscience

Abstract

Dopaminergic neurons of the substantia nigra pars compacta (SNc) exhibit functional heterogeneity that likely underpins their diverse roles in behavior. We examined how the functional diversity of identified dopaminergic neurons in vivo correlates with differences in somato-dendritic architecture and afferent synaptic organization. Stereological analysis of individually recorded and labeled dopaminergic neurons of rat SNc revealed that they received approximately 8,000 synaptic inputs, at least 30% of which were glutamatergic and 40-70% were GABAergic. The latter synapses were proportionally greater in number and denser on dendrites located in the substantia nigra pars reticulata (SNr) than on those located in SNc, revealing the existence of two synaptically distinct and region-specific subcellular domains. We also found that the relative extension of SNc neuron dendrites into the SNr dictated overall GABAergic innervation and predicted inhibition responses to aversive stimuli. We conclude that diverse wiring patterns determine the heterogeneous activities of midbrain dopaminergic neurons in vivo.

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  1. [20]Fallon JH Loughlin SE Paxinos G Substantia nigra The Rat Nervous System 1995 215 238 Academic Press London

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Authors
Henny, P., Brown, M. T. C., Northrop, A., Faunes, M., Ungless, M. A., Magill, P. J., & Bolam, J. P.
Affiliations
  • Pontificia Universidad Católica de Chile (CL)
  • Hammersmith Hospital (GB)
  • University of Oxford (GB)
Corresponding author
Henny, Pablo
Venue
Nature Neuroscience
Published
2012-02-12
Volume
15
Issue
4
Pages
613-619
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2075511856
Cited by
139
References
49
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 7 · 2022: 6 · 2021: 11 · 2020: 4 · 2019: 7 · 2018: 9 · 2017: 11 · 2016: 17 · 2015: 14 · 2014: 16 · 2013: 10 · 2012: 7
FWCI
6.19
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
Funders
Parkinson's UK (G-0601)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
midbrain dopaminergic neurons, substantia nigra pars compacta, substantia nigra pars reticulata, neuronal heterogeneity, dendritic ultrastructure, glutamatergic synaptic input, aversive stimuli, neuronal inhibition, juxtacellular labeling, stereology
MeSH terms
Action Potentials, Animals, Mesencephalon, Physical Stimulation, Synapses, Rats, Dopaminergic Neurons

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