Evidence map›Paper›PMID 9254663›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1997

Slow recovery from inactivation of Na+ channels underlies the activity-dependent attenuation of dendritic action potentials in hippocampal CA1 pyramidal neurons.

C M Colbert, J C Magee, D A Hoffman, D Johnston

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 120 papers.

0numbers the graph read from it
0cells of the map it votes in
120citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

120 citing papers in PubMed.

  1. CaInternational journal of molecular sciences · 2026
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  7. Review
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  13. Modulation of neuronal excitability by binge alcohol drinking.Frontiers in molecular neuroscience · 2023
    Review
  14. Article
  15. Long-Term Inactivation of Sodium Channels as a Mechanism of Adaptation in CA1 Pyramidal Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review

60 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

C M ColbertDivision of Neuroscience, Baylor College of Medicine, Houston, Texas 77030, USA.
J C Magee
D A Hoffman
D Johnston

Funding

CELLULAR INFORMATION PROCESSING IN THE HIPPOCAMPUSR01MH048432 · NIMH · UNIVERSITY OF TEXAS AUSTIN · PI JOHNSTON, DANIEL · 1991 to 2012
$3.8M
PHARMACOLOGY OF MOSSY FIBER SYNAPTIC PLASTICITYR37MH044754 · NIMH · UNIVERSITY OF TEXAS AUSTIN · PI JOHNSTON, DANIEL · 1989 to 2008
$3.2M
MEMBRANE AND SYNAPTIC MECHANISMS IN EPILEPTOGENESISP01NS011535 · NINDS · BAYLOR COLLEGE OF MEDICINE · PI KELLAWAY, PETER A · 1993 to 1997
–
TIME MODULATION OF EPILEPTIC ACITVITY IN THE BRAINP50NS011535 · NINDS · BAYLOR COLLEGE OF MEDICINE · PI PLISKHER, GORDON A · 1985 to 1991
–
NIMH NIH HHS MH44754NIMH NIH HHS MH48432NINDS NIH HHS NS11535
6 · The paper itself

Abstract

Na+ action potentials propagate into the dendrites of pyramidal neurons driving an influx of Ca2+ that seems to be important for associative synaptic plasticity. During repetitive (10-50 Hz) firing, dendritic action potentials display a marked and prolonged voltage-dependent decrease in amplitude. Such a decrease is not apparent in somatic action potentials. We investigated the mechanisms of the different activity dependence of somatic and dendritic action potentials in CA1 pyramidal neurons of adult rats using whole-cell and cell-attached patch-clamp methods. There were three main findings. First, dendritic Na+ currents decreased in amplitude when repeatedly activated by brief (2 msec) depolarizations. Recovery was slow and voltage-dependent. Second, Na+ currents decreased much less in somatic than in dendritic patches. Third, although K+ currents remained constant during trains, K+ currents were necessary for dendritic action potential amplitude to decrease in whole-cell experiments. These results suggest that regional differences in Na+ and K+ channels determine the differences in the activity dependence of somatic and dendritic action potential amplitudes.

Indexed as

Action PotentialsAnimalsDendritesElectric ConductivityElectrophysiologyHippocampusMalePotassiumPyramidal CellsRatsRats, Sprague-DawleySodium ChannelsPotassiumSodium Channels

Identifiers

PMID9254663
PMCPMC6573147

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.