Evidence map›Paper›PMID 33567253›Full record

ArticleNeuron2021

Frequency of theta rhythm is controlled by acceleration, but not speed, in running rats.

Emilio Kropff, James E Carmichael, Edvard I Moser, May-Britt Moser

Abstract read
In one paragraph

Article in Neuron, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing 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

55 citing papers in PubMed.

  1. Article
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  6. Review
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  8. Theta Activity Supports Landmark-Based Correction of Naturalistic Human Path Integration.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Theta Oscillons in Behaving Rats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
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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.

Emilio KropffKavli Institute for Systems Neuroscience and Centre for Neural Computation, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway; Leloir Institute-IIBBA-CONICET, Buenos Aires 1405BWE, Argentina. Electronic address: ekropff@leloir.org.ar.
James E CarmichaelKavli Institute for Systems Neuroscience and Centre for Neural Computation, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway.
Edvard I MoserKavli Institute for Systems Neuroscience and Centre for Neural Computation, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. Electronic address: edvard.moser@ntnu.no.
May-Britt MoserKavli Institute for Systems Neuroscience and Centre for Neural Computation, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The theta rhythm organizes neural activity across hippocampus and entorhinal cortex. A role for theta oscillations in spatial navigation is supported by half a century of research reporting that theta frequency encodes running speed linearly so that displacement can be estimated through theta frequency integration. We show that this relationship is an artifact caused by the fact that the speed of freely moving animals could not be systematically disentangled from acceleration. Using an experimental procedure that clamps running speed at pre-set values, we find that the theta frequency of local field potentials and spike activity is linearly related to positive acceleration, but not negative acceleration or speed. The modulation by positive-only acceleration makes rhythmic activity at theta frequency unfit as a code to compute displacement or any other kinematic variable. Temporally precise variations in theta frequency may instead serve as a mechanism for speeding up entorhinal-hippocampal computations during accelerated movement.

Indexed as

AccelerationAnimalsArtifactsEntorhinal CortexGrid CellsHippocampusMaleRatsRats, Long-EvansRunningSpatial NavigationTheta Rhythmaccelerationborder cellsentorhinal cortexgrid cellshead direction cellshippocampusspacespeedspeed cellstheta rhythm

Identifiers

PMID33567253
PMCPMC7980093

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.