Cited by 196Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Cooperative subnetworks of molecularly similar interneurons in mouse neocortex

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Karnani, Mahesh M., Jackson, Jesse, Ayzenshtat, Inbal, Tucciarone, Jason, Manoocheri, Kasra, Snider, William G., Yuste, Rafael·2016·Neuron

Abstract

Simultaneous co-activation of neocortical neurons is likely critical for brain computations ranging from perception and motor control to memory and cognition. While co-activation of excitatory principal cells (PCs) during ongoing activity has been extensively studied, that of inhibitory interneurons (INs) has received little attention. Here, we show in vivo and in vitro that members of two non-overlapping neocortical IN populations, expressing somatostatin (SOM) or vasoactive intestinal peptide (VIP), are active as populations rather than individually. We demonstrate a variety of synergistic mechanisms, involving population-specific local excitation, GABAergic disinhibition and excitation through electrical coupling, which likely underlie IN population co-activity. Firing of a few SOM or VIP INs recruits additional members within the cell type via GABAergic and cholinergic mechanisms, thereby amplifying the output of the population as a whole. Our data suggest that IN populations work as cooperative units, thus generating an amplifying nonlinearity in their circuit output.

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Crossref · 10.1016/j.neuron.2016.02.037

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  • GABA and Ach coreleased in cortex may act in parallel on different targets to achieve a common function, such as placing cortex in a more excitable and pro-plasticity state.

    “GABA and Ach coreleased in the cortex may act in parallel on different targets to achieve a single common function, such as placing the cortex in a more excitable and pro-plasticity state by simultaneously inhibiting Sst+ interneurons with GABA while using Ach release to excite disinhibitory interneurons and activate muscarinic receptors on pyramidal cells.90,97,98,140,141”

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Authors
Karnani, M. M., Jackson, J., Ayzenshtat, I., Tucciarone, J., Manoocheri, K., Snider, W. G., & Yuste, R.
Affiliations
  • Columbia University (US)
  • Cold Spring Harbor Laboratory (US)
Corresponding author
Karnani, Mahesh M.
Venue
Neuron
Publisher
Elsevier BV
Published
2016-04
Volume
90
Issue
1
Pages
86-100
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2304994747
Cited by
196
References
50
Citations by year
2026: 12 · 2025: 21 · 2024: 15 · 2023: 15 · 2022: 21 · 2021: 18 · 2020: 21 · 2019: 14 · 2018: 17 · 2017: 25 · 2016: 17
FWCI
13.69
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
  • National Institute of Mental Health (R01 MH100561, R01MH101218)
  • National Eye Institute (DP1EY024503, R01EY011787)
  • Army Research Office (W911NF-12-1-0594 MURI)
  • Defense Advanced Research Projects Agency (SIMPLEX N66001-15-C-4032)
  • Canadian Institutes of Health Research
  • Human Frontier Science Program
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
inhibitory interneurons, neocortex, somatostatin interneurons, vasoactive intestinal peptide interneurons, GABAergic disinhibition, electrical coupling, cholinergic modulation, localized excitations, nonlinear amplification, mice
MeSH terms
Acetylcholine, Animals, gamma-Aminobutyric Acid, Interneurons, Neural Inhibition, Neurons, Somatostatin, Vasoactive Intestinal Peptide, Pyramidal Cells, Patch-Clamp Techniques, Neocortex, Mice, In Vitro Techniques

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