Evidence map›Paper›PMID 25670485›Full record

ArticleInvestigative ophthalmology & visual science2015

Quick phases of infantile nystagmus show the saccadic inhibition effect.

James J Harrison, Petroc Sumner, Matt J Dunn, Jonathan T Erichsen, Tom C A Freeman

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.7field-weighted citation impact, top 25% 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

5 citing papers in PubMed, 5 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

James J HarrisonSchool of Psychology, Cardiff University, Cardiff, United Kingdom.
Petroc SumnerSchool of Psychology, Cardiff University, Cardiff, United Kingdom Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom.
Matt J DunnSchool of Optometry and Vision Sciences, Cardiff University, Cardiff, United Kingdom.
Jonathan T ErichsenSchool of Optometry and Vision Sciences, Cardiff University, Cardiff, United Kingdom.
Tom C A FreemanSchool of Psychology, Cardiff University, Cardiff, United Kingdom.
Cardiff University · GB

Funding

Wellcome TrustWellcome Trust WT081581MA
6 · The paper itself

Abstract

purposeInfantile nystagmus (IN) is a pathological, involuntary oscillation of the eyes consisting of slow, drifting eye movements interspersed with rapid reorienting quick phases. The extent to which quick phases of IN are programmed similarly to saccadic eye movements remains unknown. We investigated whether IN quick phases exhibit 'saccadic inhibition,' a phenomenon typically related to normal targeting saccades, in which the initiation of the eye movement is systematically delayed by task-irrelevant visual distractors.

methodsWe recorded eye position from 10 observers with early-onset idiopathic nystagmus while task-irrelevant distractor stimuli were flashed along the top and bottom of a large screen at ±10° eccentricity. The latency distributions of quick phases were measured with respect to these distractor flashes. Two additional participants, one with possible albinism and one with fusion maldevelopment nystagmus syndrome, were also tested.

resultsAll observers showed that a distractor flash delayed the execution of quick phases that would otherwise have occurred approximately 100 ms later, exactly as in the standard saccadic inhibition effect. The delay did not appear to differ between the two main nystagmus types under investigation (idiopathic IN with unidirectional and bidirectional jerk).

conclusionsThe presence of the saccadic inhibition effect in IN quick phases is consistent with the idea that quick phases and saccades share a common programming pathway. This could allow quick phases to take on flexible, goal-directed behavior, at odds with the view that IN quick phases are stereotyped, involuntary eye movements.

Indexed as

AdultAgedAged, 80 and overAttentionFemaleHumansInfantMaleMiddle AgedNeural InhibitionNystagmus, OptokineticNystagmus, PathologicOculomotor NerveOrientationPhotic StimulationSaccadesinfantile nystagmusquick phasesaccadesaccadic inhibition effect

Identifiers

PMID25670485
PMCPMC4351650
OpenAlexW1968211454

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.