Cited by 1,231Neural dynamics and brain functionNeuroscience and Neuropharmacology ResearchIon channel regulation and function

Influence of dendritic structure on firing pattern in model neocortical neurons

Mainen, Zachary F., Sejnowski, Terrence J.·1996·Nature

Abstract

Neocortical neurons display a wide range of dendritic morphologies, ranging from compact arborizations to highly elaborate branching patterns. In vitro electrical recordings from these neurons have revealed a correspondingly diverse range of intrinsic firing patterns, including non-adapting, adapting and bursting types. This heterogeneity of electrical responsivity has generally been attributed to variability in the types and densities of ionic channels. We show here, using compartmental models of reconstructed cortical neurons, that an entire spectrum of firing patterns can be reproduced in a set of neurons that share a common distribution of ion channels and differ only in their dendritic geometry. The essential behaviour of the model depends on partial electrical coupling of fast active conductances localized to the soma and axon and slow active currents located throughout the dendrites, and can be reproduced in a two-compartment model. The results suggest a causal relationship for the observed correlations between dendritic structure and firing properties and emphasize the importance of active dendritic conductances in neuronal function.

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Crossref · 10.1038/382363a0

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Authors
Mainen, Z. F., & Sejnowski, T. J.
Affiliations
Salk Institute for Biological Studies (US)
Venue
Nature
Published
1996-07
Volume
382
Issue
6589
Pages
363-366
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2004921550
Cited by
1,231
References
0
Citations by year
2026: 24 · 2025: 36 · 2024: 47 · 2023: 46 · 2022: 34 · 2021: 38 · 2020: 53 · 2019: 41 · 2018: 46 · 2017: 59 · 2016: 45 · 2015: 43 · 2014: 50 · 2013: 51 · 2012: 49
FWCI
13.50
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
dendritic morphology, neocortical neurons, neuronal firing patterns, compartmental neuron model, dendritic geometry, electrical coupling, burst firing, ion channels
MeSH terms
Action Potentials, Cerebral Cortex, Dendrites, Models, Neurological, Neurons, Calcium Channels, Potassium Channels

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