Evidence map›Paper›PMID 24639484›Full record

ArticleThe Journal of physiology2014

Neural substrates underlying fear-evoked freezing: the periaqueductal grey-cerebellar link.

Stella Koutsikou, Jonathan J Crook, Emma V Earl, J Lianne Leith, Thomas C Watson, Bridget M Lumb, Richard Apps

Open access · hybridAbstract read
In one paragraph

Article in The Journal of physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 112 citations in OpenAlex.

  1. Pooled it
  2. Stretch-Induced Muscle Responses Under Threat Versus Safety.The European journal of neuroscience · 2026
    Article
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  6. Rostral Ventromedial Medulla (RVM) Projects to the Lateral Hypothalamic Area (LHA) to Drive Aversion and Anxiety.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Cognitive-Affective Functions of the Cerebellum.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  20. Article

6 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.

Stella KoutsikouSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK School of Biological Sciences, University of Bristol, Bristol, BS8 1UG, UK.
Jonathan J CrookSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK.
Emma V EarlSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK.
J Lianne LeithSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK.
Thomas C WatsonSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK.
Bridget M LumbSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK b.m.lumb@bristol.ac.uk.
Richard AppsSchool of Physiology and Pharmacology, Medical Sciences Building University of Bristol, Bristol, BS8 1TD, UK.
University of Bristol · GB

Funding

Biotechnology and Biological Sciences Research Council BB/G012717/1
6 · The paper itself

Abstract

The central neural pathways involved in fear-evoked behaviour are highly conserved across mammalian species, and there is a consensus that understanding them is a fundamental step towards developing effective treatments for emotional disorders in man. The ventrolateral periaqueductal grey (vlPAG) has a well-established role in fear-evoked freezing behaviour. The neural pathways underlying autonomic and sensory consequences of vlPAG activation in fearful situations are well understood, but much less is known about the pathways that link vlPAG activity to distinct fear-evoked motor patterns essential for survival. In adult rats, we have identified a pathway linking the vlPAG to cerebellar cortex, which terminates as climbing fibres in lateral vermal lobule VIII (pyramis). Lesion of pyramis input-output pathways disrupted innate and fear-conditioned freezing behaviour. The disruption in freezing behaviour was strongly correlated to the reduction in the vlPAG-induced facilitation of α-motoneurone excitability observed after lesions of the pyramis. The increased excitability of α-motoneurones during vlPAG activation may therefore drive the increase in muscle tone that underlies expression of freezing behaviour. By identifying the cerebellar pyramis as a critical component of the neural network subserving emotionally related freezing behaviour, the present study identifies novel neural pathways that link the PAG to fear-evoked motor responses.

Indexed as

AnimalsCerebellumFearFreezing Reaction, CatalepticMaleMovementNerve NetNeural PathwaysPeriaqueductal GrayRatsRats, WistarReflex

Identifiers

PMID24639484
PMCPMC4027863
OpenAlexW1890256625

What OpenQuestion holds

Textmetadata
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.