Evidence map›Paper›PMID 31058404›Full record

ArticleHippocampus2019

Functional connectivity along the anterior-posterior axis of hippocampal subfields in the ageing human brain.

Marshall A Dalton, Cornelia McCormick, Flavia De Luca, Ian A Clark, Eleanor A Maguire

Erratum issuedAbstract read
In one paragraph

Article in Hippocampus, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Hippocampal contributions to novel spatial learning are both age-related and age-invariant.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Entorhinal-Hippocampal Circuit Integrity Is Related to Mnemonic Discrimination and Amyloid-β Pathology in Older Adults.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Characterising the hippocampal response to perception, construction and complexity.Cortex; a journal devoted to the study of the nervous system and behavior · 2021
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Marshall A DaltonWellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.
Cornelia McCormickWellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.
Flavia De LucaWellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.
Ian A ClarkWellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.
Eleanor A MaguireWellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK.ORCID 0000-0002-9470-6324

Funding

Wellcome 203147/Z/16/ZWellcome 210567/Z/18/ZWellcome Trust 210567/Z/18/Z
6 · The paper itself

Abstract

While age-related volumetric changes in human hippocampal subfields have been reported, little is known about patterns of subfield functional connectivity (FC) in the context of healthy ageing. Here we investigated age-related changes in patterns of FC down the anterior-posterior axis of each subfield. Using high resolution structural MRI we delineated the dentate gyrus (DG), CA fields (including separating DG from CA3), the subiculum, pre/parasubiculum, and the uncus in healthy young and older adults. We then used high resolution resting state functional MRI to measure FC in each group and to directly compare them. We first examined the FC of each subfield in its entirety, in terms of FC with other subfields and with neighboring cortical regions, namely, entorhinal, perirhinal, posterior parahippocampal, and retrosplenial cortices. Next, we analyzed subfield to subfield FC within different portions along the hippocampal anterior-posterior axis, and FC of each subfield portion with the neighboring cortical regions of interest. In general, the FC of the older adults was similar to that observed in the younger adults. We found that, as in the young group, the older group displayed intrinsic FC between the subfields that aligned with the tri-synaptic circuit but also extended beyond it, and that FC between the subfields and neighboring cortical areas differed markedly along the anterior-posterior axis of each subfield. We observed only one significant difference between the young and older groups. Compared to the young group, the older participants had significantly reduced FC between the anterior CA1-subiculum transition region and the transentorhinal cortex, two brain regions known to be disproportionately affected during the early stages of age-related tau accumulation. Overall, these results contribute to ongoing efforts to characterize human hippocampal subfield connectivity, with implications for understanding hippocampal function and its modulation in the ageing brain.

Indexed as

AdultAgedAgingBrainEntorhinal CortexHippocampusHumansMagnetic Resonance ImagingNerve NetYoung Adultageingfunctional connectivityhippocampal subfieldsperirhinal cortexsubiculumtau

Identifiers

PMID31058404
PMCPMC6849752

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.