Evidence map›Paper›PMID 28966877›Full record

ReviewTremor and other hyperkinetic movements (New York, N.Y.)2017

The Olivary Hypothesis of Essential Tremor: Time to Lay this Model to Rest?

Elan D Louis, Abhishek Lenka

Open access · greenAbstract readReview
In one paragraph

Review in Tremor and other hyperkinetic movements (New York, N.Y.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 7% 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

37 citing papers in PubMed, 2 syntheses or guidelines pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Review
  6. Article
  7. Six Myths and Misconceptions about Essential Tremor.Tremor and other hyperkinetic movements (New York, N.Y.) · 2024
    Review
  8. Article
  9. Review
  10. Review
  11. Milestones in Tremor Research: 10 Years Later.Movement disorders clinical practice · 2022
    Review
  12. Essential Tremor: Five New Things.Neurology. Clinical practice · 2022
    Article
  13. Article
  14. Is the inferior olive central to essential tremor? Yes.International review of neurobiology · 2022
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review
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

2 authors at 2 institutions in 2 countries.

Elan D LouisDivision of Movement Disorders, Department of Neurology, Yale School of Medicine, Yale University, New Haven, CT, USA.
Abhishek LenkaDepartment of Clinical Neurosciences, National Institute of Mental Health and Neurosciences, Bangalore, India.
National Institute of Mental Health and Neurosciences · INYale University · US

Funding

ENVIRONMENTAL EPIDEMIOLOGY OF ESSENTIAL TREMORR01NS039422 · NINDS · YALE UNIVERSITY · PI LOUIS, ELAN D · 2000 to 2013
$7.7M
Identification of Susceptibility Genes for Essential TremorR01NS073872 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI CLARK, LORRAINE N, LOUIS, ELAN D · 2011 to 2019
$7.4M
Environmental Epidemiology of Essential TremorR01NS094607 · NINDS · YALE UNIVERSITY · PI LOUIS, ELAN D · 2016 to 2020
$3.9M
PATHOLOG-OMICS - ESSENTIAL TREMOR IN THE BROADER CONTEXT OF NEURODEGENERATIONR01NS088257 · NINDS · YALE UNIVERSITY · PI FAUST, PHYLLIS L, LOUIS, ELAN D · 2015 to 2019
$3.3M
in Vivo Quantification of Cerebellar GABA and NAA in Essential TremorR01NS085136 · NINDS · YALE UNIVERSITY · PI MATUSKEY, DAVID A · 2013 to 2017
$3.3M
NINDS NIH HHS R01 NS039422NINDS NIH HHS R01 NS073872NINDS NIH HHS R01 NS085136NINDS NIH HHS R01 NS088257NINDS NIH HHS R01 NS094607
6 · The paper itself

Abstract

backgroundAlthough essential tremor (ET) is the most common tremor disorder, its pathogenesis is not fully understood. The traditional model of ET, proposed in the early 1970s, posited that the inferior olivary nucleus (ION) was the prime generator of tremor in ET and that ET is a disorder of electrophysiological derangement, much like epilepsy. This article comprehensively reviews the origin and basis of this model, its merits and problems, and discusses whether it is time to lay this model to rest.

methodsA PubMed search was performed in March 2017 to identify articles for this review.

resultsThe olivary model gains support from the recognition of neurons with pacemaker property in the ION and the harmaline-induced tremor models (as the ION is the prime target of harmaline). However, the olivary model is problematic, as neurons with pacemaker property are not specific to the ION and the harmaline model does not completely represent the human disease ET. In addition, a large number of neuroimaging studies in ET have not detected structural or functional changes in the ION; rather, abnormalities have been reported in structures related to the cerebello-thalamo-cortical network. Moreover, a post-mortem study of microscopic changes in the ION did not detect any differences between ET cases and controls. DISCUSSION: The olivary model largely remains a physiological construct. Numerous observations have cast considerable doubt as to the validity of this model in ET. Given the limitations of the model, we conclude that it is time now to lay this model to rest.

Indexed as

AnimalsEssential TremorHumansModels, NeurologicalOlivary NucleuscerebellumEssential tremorharmalineinferior olivepathogenesis

Identifiers

PMID28966877
PMCPMC5618117
OpenAlexW2738786930

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.