Cited by 174Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionNeurogenesis and neuroplasticity mechanisms

Coordinated developmental recruitment of latent fast spiking interneurons in layer IV barrel cortex

Daw, Michael I, Ashby, Michael C, Isaac, John T R·2007·Nature Neuroscience

Abstract

Feedforward inhibitory GABAergic transmission is critical for mature cortical circuit function; in the neonate, however, GABA is depolarizing and believed to have a different role. Here we show that the GABAA receptor-mediated conductance is depolarizing in excitatory (stellate) cells in neonatal (postnatal day [P]3-5) layer IV barrel cortex, but GABAergic transmission at this age is not engaged by thalamocortical input in the feedforward circuit and has no detectable circuit function. However, recruitment occurs at P6-7 as a result of coordinated increases in thalamic drive to fast-spiking interneurons, fast-spiking interneuron-stellate cell connectivity and hyperpolarization of the GABAA receptor-mediated response. Thus, GABAergic circuits are not engaged by thalamocortical input in the neonate, but are poised for a remarkably coordinated development of feedforward inhibition at the end of the first postnatal week, which has profound effects on circuit function at this critical time in development.

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Crossref · 10.1038/nn1866

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  • Connections between PV+ basket cells and layer 4 excitatory neurons remain relatively weak until the second postnatal week, when PV+ basket cells begin receiving direct thalamic inputs.

    “However, the connectivity between these interneurons and excitatory neurons in layer 4 remains relatively weak until the second postnatal week, when PV+ basket cells begin receiving direct inputs from thalamic neurons (Chittajallu and Isaac, 2010; Daw et al., 2007).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Daw et al., 2007

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Authors
Daw, M. I., Ashby, M. C., & Isaac, J. T. R.
Affiliations
  • University of Bristol (GB)
  • National Institutes of Health (US)
Corresponding author
Isaac, John T R
Venue
Nature Neuroscience
Published
2007-03-11
Volume
10
Issue
4
Pages
453-461
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1964470295
Cited by
174
References
47
Citations by year
2026: 4 · 2025: 8 · 2024: 7 · 2023: 8 · 2022: 6 · 2021: 11 · 2020: 4 · 2019: 4 · 2018: 13 · 2017: 16 · 2016: 16 · 2015: 8 · 2014: 13 · 2013: 7 · 2012: 8
FWCI
4.63
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Explore Bristol Research (publishedVersion)
  • Bristol Research (University of Bristol) (submittedVersion)
Funders
  • Wellcome Trust
  • National Institutes of Health
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 › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
fast-spiking interneurons, stellate cells, feedforward inhibition, GABAA receptor, neonatal development, thalamocortical input, GABAergic neurotransmission, cortical circuit development, postnatal development
MeSH terms
Action Potentials, Age Factors, Animals, Animals, Newborn, Bicuculline, Cerebral Cortex, Dose-Response Relationship, Radiation, Electric Stimulation, Interneurons, Mice, Transgenic, Neural Pathways, Thalamus, Patch-Clamp Techniques, GABA Antagonists, Excitatory Postsynaptic Potentials, Green Fluorescent Proteins, Mice, In Vitro Techniques

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