Evidence map›Paper›PMID 34003422›Full record

ArticleJournal of computational neuroscience2021

Modeling the interaction among three cerebellar disorders of eye movements: periodic alternating, gaze-evoked and rebound nystagmus.

Ari A Shemesh, Koray Kocoglu, Gülden Akdal, Rahmi Tümay Ala, G Michael Halmagyi, David S Zee, Jorge Otero-Millan

Open access · greenAbstract read
In one paragraph

Article in Journal of computational neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.3field-weighted citation impact, top 45% 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

4 citing papers in PubMed, 6 citations in OpenAlex.

  1. Characteristics and Mechanisms of Aperiodic Alternating Nystagmus.Journal of clinical neurology (Seoul, Korea) · 2026
    Article
  2. Article
  3. Article
  4. Modeling the effect of gravity on periodic alternating nystagmus.Journal of the neurological sciences · 2022
    Article
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 3 institutions in 3 countries.

Ari A ShemeshDepartment of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Koray KocogluDepartment of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, İzmir, Turkey.ORCID 0000-0002-1778-4564
Gülden AkdalDepartment of Neurosciences, Institute of Health Sciences, Dokuz Eylül University, İzmir, Turkey.ORCID 0000-0002-2486-4490
Rahmi Tümay AlaDepartment of Neurology, Faculty of Medicine, Dokuz Eylül University, İzmir, Turkey.
G Michael HalmagyiDepartment of Neurology, Royal Prince Alfred Hospital and University of Sydney, Sydney, Australia.
David S ZeeDepartment of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.ORCID 0000-0003-3909-2494
Jorge Otero-MillanDepartment of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA. jom@berkeley.edu.ORCID 0000-0002-9789-8392
Dokuz Eylül University · TRJohns Hopkins University · USThe University of Sydney · AU

Funding

Perceptual stability during torsional eye movementsR00EY027846 · NEI · UNIVERSITY OF CALIFORNIA BERKELEY · PI OTERO-MILLAN, JORGE · 2020 to 2022
$739k
Perceptual stability during torsional eye movementsK99EY027846 · NEI · JOHNS HOPKINS UNIVERSITY · PI OTERO-MILLAN, JORGE · 2018 to 2019
$239k
NEI NIH HHS K99 EY027846NEI NIH HHS K99EY027846NEI NIH HHS R00 EY027846NEI NIH HHS R00EY027846
6 · The paper itself

Abstract

A woman, age 44, with a positive anti-YO paraneoplastic cerebellar syndrome and normal imaging developed an ocular motor disorder including periodic alternating nystagmus (PAN), gaze-evoked nystagmus (GEN) and rebound nystagmus (RN). During fixation there was typical PAN but changes in gaze position evoked complex, time-varying oscillations of GEN and RN. To unravel the pathophysiology of this unusual pattern of nystagmus, we developed a mathematical model of normal function of the circuits mediating the vestibular-ocular reflex and gaze-holding including their adaptive mechanisms. Simulations showed that all the findings of our patient could be explained by two, small, isolated changes in cerebellar circuits: reducing the time constant of the gaze-holding integrator, producing GEN and RN, and increasing the gain of the vestibular velocity-storage positive feedback loop, producing PAN. We conclude that the gaze- and time-varying pattern of nystagmus in our patient can be accounted for by superposition of one model that produces typical PAN and another model that produces typical GEN and RN, without requiring a new oscillator in the gaze-holding system or a more complex, nonlinear interaction between the two models. This analysis suggest a strategy for uncovering gaze-evoked and rebound nystagmus in the setting of a time-varying nystagmus such as PAN. Our results are also consistent with current ideas of compartmentalization of cerebellar functions for the control of the vestibular velocity-storage mechanism (nodulus and ventral uvula) and for holding horizontal gaze steady (the flocculus and tonsil).

Indexed as

Cerebellar DiseasesNystagmus, PathologicAdultCerebellumEye MovementsFemaleHumansModels, NeurologicalAdaptationCerebellumGaze-evoked nystagmusParaneoplasticPeriodic alternating nystagmusRebound nystagmusSuperposition

Identifiers

PMID34003422
PMCPMC9169448
OpenAlexW3161539507

What OpenQuestion holds

Textmetadata
LicenceTDM
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.