Evidence map›Paper›PMID 27713470›Full record

ArticleScientific reports2016

In-vivo Dynamics of the Human Hippocampus across the Menstrual Cycle.

Claudia Barth, Christopher J Steele, Karsten Mueller, Vivien P Rekkas, Katrin Arélin, Andre Pampel, Inga Burmann, Jürgen Kratzsch, Arno Villringer, Julia Sacher

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 1 pooled it
9.4field-weighted citation impact, top 2% of its field
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

80 citing papers in PubMed, 1 synthesis or guideline pooled it, 164 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Single-cell map of the female brain across reproductive transitions.bioRxiv : the preprint server for biology · 2026
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  10. Lasting effects of oral contraceptives on fear responses to a safe context.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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20 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

10 authors at 5 institutions in 2 countries.

Claudia BarthDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Christopher J SteeleDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Karsten MuellerDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Vivien P RekkasCAMH Research Imaging Centre and Campbell Family Mental Health Research Institute at the Centre for Addiction and Mental Health and the Department of Psychiatry, University of Toronto, Toronto, Canada.
Katrin ArélinDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Andre PampelDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Inga BurmannDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Jürgen KratzschInstitute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Leipzig, Germany.
Arno VillringerDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Julia SacherDepartment of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Max Planck Institute for Human Cognitive and Brain Sciences · DEBrain (Germany) · DELeipzig University · DEUniversity Hospital Leipzig · DEUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sex hormones fluctuate during the menstrual cycle. Evidence from animal studies suggests similar subtle fluctuations in hippocampal structure, predominantly linked to estrogen. Hippocampal abnormalities have been observed in several neuropsychiatric pathologies with prominent sexual dimorphism. Yet, the potential impact of subtle sex-hormonal fluctuations on human hippocampal structure in health is unclear. We tested the feasibility of longitudinal neuroimaging in conjunction with rigorous menstrual cycle monitoring to evaluate potential changes in hippocampal microstructure associated with physiological sex-hormonal changes. Thirty longitudinal diffusion weighted imaging scans of a single healthy female subject were acquired across two full menstrual cycles. We calculated hippocampal fractional anisotropy (FA), a measure sensitive to changes in microstructural integrity, and investigated potential correlations with estrogen. We observed a significant positive correlation between FA values and estrogen in the hippocampus bilaterally, revealing a peak in FA closely paralleling ovulation. This exploratory, single-subject study demonstrates the feasibility of a longitudinal DWI scanning protocol across the menstrual cycle and is the first to link subtle endogenous hormonal fluctuations to changes in FA in vivo. In light of recent attempts to neurally phenotype single humans, our findings highlight menstrual cycle monitoring in parallel with highly sampled individual neuroimaging data to address fundamental questions about the dynamics of plasticity in the adult brain.

Indexed as

AdultAnisotropyBrainBrain MappingDiffusion Magnetic Resonance ImagingDiffusion Tensor ImagingEstrogensFemaleGonadal Steroid HormonesHippocampusHumansImage Processing, Computer-AssistedLongitudinal StudiesMagnetic Resonance ImagingMenstrual CycleOvulationEstrogensGonadal Steroid Hormones

Identifiers

PMID27713470
PMCPMC5054394
OpenAlexW2528977329

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.