Evidence map›Paper›PMID 20467851›Full record

ArticleCerebellum (London, England)2010

Ocular motor fixation deficits in Friedreich ataxia.

Darren R Hocking, Joanne Fielding, Louise A Corben, Phillip D Cremer, Lynette Millist, Owen B White, Martin B Delatycki

Abstract read
PubMed Publisher
In one paragraph

Article in Cerebellum (London, England), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
1.2field-weighted citation impact, top 26% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Neuro-Ophthalmological Findings in Friedreich's Ataxia.Journal of personalized medicine · 2021
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Otoneurological Abnormalities in Patients with Friedreich's Ataxia.International archives of otorhinolaryngology · 2017
    Article
  14. Observational
  15. Article
  16. Review
  17. Clinical features of Friedreich ataxia.Journal of child neurology · 2012
    Review
  18. Ophthalmic features of Friedreich ataxia.Eye (London, England) · 2012
    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 5 institutions in 2 countries.

Darren R HockingBruce Lefroy Center for Genetic Health Research, Murdoch Children's Research Institute, Parkville, Victoria, Australia. Darren.Hocking@med.monash.edu.au
Joanne Fielding
Louise A Corben
Phillip D Cremer
Lynette Millist
Owen B White
Martin B Delatycki
Murdoch Children's Research Institute · AUThe Royal Melbourne Hospital · AUAustralian Regenerative Medicine Institute · AURoyal North Shore Hospital · AUThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Friedreich ataxia (FRDA) is the most common genetic cause of ataxia with a prevalence of approximately 1 in 29,000. Ocular motor abnormalities are common in FRDA and include fixation instability, saccadic dysmetria, and vestibular dysfunction. It has not yet been determined whether aspects of spatial attention, which are closely coupled to eye movements, are similarly compromised in FRDA. This study examined attentional engagement and disengagement of eye movements in FRDA using a gap overlap task. Thirteen individuals with genetically confirmed FRDA and 12 age-matched unaffected controls participated in the experiment. The gap overlap paradigm was used to examine the effect of early (gap condition), simultaneous (null condition), or late (overlap condition) removal of a central fixation on saccadic latency to a peripheral target stimulus. Although the FRDA group showed a larger gap effect (i.e., difference in saccadic latencies between the overlap and gap condition), these participants demonstrated a greater difference in latencies in the overlap relative to the null condition, suggestive of deficits within the disengagement process of attentional orienting. We propose a role for the cerebellum in these deficits in the disengagement of spatial attention based on evidence of cerebellar connectivity with regions involved in exogenous shifts of attention. The significant correlations between saccadic latency and disease severity as measured by the Friedreich Ataxia Rating Scale further support the proposal that saccadic latency might be useful as a surrogate marker of disease severity and progression in future clinical trials in FRDA.

Indexed as

AdolescentFixation, OcularFriedreich AtaxiaHumansOcular Motility Disorders

Identifiers

PMID20467851
OpenAlexW1991320628

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.