Evidence map›Paper›PMID 31815940›Full record

ArticlePLoS biology2019

Spatial encoding in primate hippocampus during free navigation.

Hristos S Courellis, Samuel U Nummela, Michael Metke, Geoffrey W Diehl, Robert Bussell, Gert Cauwenberghs, Cory T Miller

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
4.7field-weighted citation impact, top 4% 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

61 citing papers in PubMed, 92 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Vision shapes neural maps of space through an ancient midbrain pathway.bioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Article
  8. Primate neuroethology: a new synthesis.Trends in cognitive sciences · 2026
    Review
  9. Article
  10. Understanding the Brain as a Mentalizing Machine with a Symbol Grounding Function.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Review
  11. Review
  12. The Map's Design: Evolution's Impact on Navigation and Spatial Cognition.Animals : an open access journal from MDPI · 2025
    Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Review
  20. Article

1 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

7 authors at 1 institution in 1 country.

Hristos S CourellisCortical Systems and Behavior Laboratory, University of California, San Diego, San Diego, California, United States of America.
Samuel U NummelaCortical Systems and Behavior Laboratory, University of California, San Diego, San Diego, California, United States of America.ORCID 0000-0002-2798-0307
Michael MetkeCortical Systems and Behavior Laboratory, University of California, San Diego, San Diego, California, United States of America.
Geoffrey W DiehlNeurosciences Graduate Program, University of California, San Diego, San Diego, United States of America.
Robert BussellCenter for Functional MRI, University of California, San Diego, San Diego, United States of America.
Gert CauwenberghsDepartment of Bioengineering, University of California, San Diego, San Diego, California, United States of America.ORCID 0000-0002-3166-5529
Cory T MillerCortical Systems and Behavior Laboratory, University of California, San Diego, San Diego, California, United States of America.ORCID 0000-0001-8345-2720
University of California San Diego · US

Funding

Neurosciences Graduate Training ProgramT32NS061847 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Brenda L Bloodgood · 2008 to 2026
$7.7M
Neural basis of vocal signal recognition during natural communicationR01DC012087 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CORY T MILLER · 2012 to 2026
$5.7M
Neural basis of memory in primate medial temporal lobeR01NS109294 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI LEUTGEB, JILL K, MILLER, CORY T · 2019 to 2023
$1.7M
Using Computation to Achieve Breakthroughs in NeuroscienceT32MH115886 · NIMH · UNIVERSITY OF MINNESOTA · PI REDISH, A DAVID · 2018 to 2022
$1.7M
NIDCD NIH HHS R01 DC012087NIMH NIH HHS T32 MH115886NINDS NIH HHS R01 NS109294NINDS NIH HHS T32 NS061847
6 · The paper itself

Abstract

The hippocampus comprises two neural signals-place cells and θ oscillations-that contribute to facets of spatial navigation. Although their complementary relationship has been well established in rodents, their respective contributions in the primate brain during free navigation remains unclear. Here, we recorded neural activity in the hippocampus of freely moving marmosets as they naturally explored a spatial environment to more explicitly investigate this issue. We report place cells in marmoset hippocampus during free navigation that exhibit remarkable parallels to analogous neurons in other mammalian species. Although θ oscillations were prevalent in the marmoset hippocampus, the patterns of activity were notably different than in other taxa. This local field potential oscillation occurred in short bouts (approximately .4 s)-rather than continuously-and was neither significantly modulated by locomotion nor consistently coupled to place-cell activity. These findings suggest that the relationship between place-cell activity and θ oscillations in primate hippocampus during free navigation differs substantially from rodents and paint an intriguing comparative picture regarding the neural basis of spatial navigation across mammals.

Indexed as

AnimalsCallithrixFemaleHippocampusLocomotionMagnetic Resonance ImagingMaleNeuronsSpace PerceptionSpatial Navigation

Identifiers

PMID31815940
PMCPMC6922474
OpenAlexW2994402776

What Socratic 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 Socratic graph.