Evidence map›Paper›PMID 26333017›Full record

ArticleHippocampus2016

Mapping the electrophysiological and morphological properties of CA1 pyramidal neurons along the longitudinal hippocampal axis.

Ruchi Malik, Kelly Ann Dougherty, Komal Parikh, Connor Byrne, Daniel Johnston

Abstract read
In one paragraph

Article in Hippocampus, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed, 1 pooled it
–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

77 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  10. Excitatory glycine receptors control ventral hippocampus synaptic plasticity and anxiety-related behaviors.Proceedings of the National Academy of Sciences of the United States of America · 2025
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17 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

5 authors.

Ruchi MalikCenter for Learning and Memory, University of Texas at Austin, Austin, Texas.
Kelly Ann DoughertyCenter for Learning and Memory, University of Texas at Austin, Austin, Texas.
Komal ParikhCenter for Learning and Memory, University of Texas at Austin, Austin, Texas.
Connor ByrneCenter for Learning and Memory, University of Texas at Austin, Austin, Texas.
Daniel JohnstonCenter for Learning and Memory, University of Texas at Austin, Austin, Texas.

Funding

Cellular Information Processing in the HippocampusR01NS084473 · NINDS · UNIVERSITY OF TEXAS AT AUSTIN · PI JOHNSTON, DANIEL · 2013 to 2017
$1.7M
Calcium store-induced intrinsic plasticity in the hippocampusR21NS077477 · NINDS · UNIVERSITY OF TEXAS AT AUSTIN · PI JOHNSTON, DANIEL · 2011 to 2013
$395k
Ih-Dependent Regulation of Intrinsic Excitability in CA1 Pyramidal NeuronsF32MH090665 · NIMH · UNIVERSITY OF TEXAS AT AUSTIN · PI DOUGHERTY, KELLY ANN · 2010 to 2012
$146k
NIMH NIH HHS F32 MH090665NIMH NIH HHS SF32MH090665NINDS NIH HHS 9R01NS084473-21NINDS NIH HHS R01 NS084473NINDS NIH HHS R21 NS077477
6 · The paper itself

Abstract

Differences in behavioral roles, anatomical connectivity, and gene expression patterns in the dorsal, intermediate, and ventral regions of the hippocampus are well characterized. Relatively fewer studies have, however, focused on comparing the physiological properties of neurons located at different dorsoventral extents of the hippocampus. Recently, we reported that dorsal CA1 neurons are less excitable than ventral neurons. There is little or no information for how neurons in the intermediate hippocampus compare to those from the dorsal and ventral ends. Also, it is not known whether the transition of properties along the dorsoventral axis is gradual or segmented. In this study, we developed a statistical model to predict the dorsoventral position of transverse hippocampal slices. Using current clamp recordings combined with this model, we found that CA1 neurons in dorsal, intermediate, and ventral hippocampus have distinct electrophysiological and morphological properties and that the transition in most (but not all) of these properties from the ventral to dorsal end is gradual. Using linear and segmented regression analyses, we found that input resistance and resting membrane potential changed linearly along the V-D axis. Interestingly, the transition in resonance frequency, rebound slope, dendritic branching in stratum radiatum, and action potential properties was segmented along the V-D axis. Together, the findings from this study highlight the heterogeneity in CA1 neuronal properties along the entire longitudinal axis of hippocampus.

Indexed as

Brain MappingAnimalsBiophysical PhenomenaBiophysicsCA1 Region, HippocampalDendritesElectric StimulationExcitatory Amino Acid AgentsIn Vitro TechniquesLinear ModelsMaleMembrane PotentialsModels, NeurologicalNerve NetPatch-Clamp TechniquesPyramidal CellsExcitatory Amino Acid Agentsdendritic branchingdorsal hippocampusfiring outputintermediate hippocampusintrinsic excitabilityresonance frequencyventral hippocampus

Identifiers

PMID26333017
PMCPMC4760884

What OpenQuestion holds

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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.