Evidence map›Paper›PMID 28097047›Full record

ArticleTranslational vision science & technology2017

Quantifying the ON and OFF Contributions to the Flash ERG with the Discrete Wavelet Transform.

Mathieu Gauvin, Maja Sustar, John M Little, Jelka Brecelj, Jean-Marc Lina, Pierre Lachapelle

Abstract read
In one paragraph

Article in Translational vision science & technology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
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

24 citing papers in PubMed.

  1. Article
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  4. A practical introduction to wavelet analysis in electroretinography.Documenta ophthalmologica. Advances in ophthalmology · 2026
    Review
  5. Article
  6. Article
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  11. Review
  12. Article
  13. Comparing the RETevalDocumenta ophthalmologica. Advances in ophthalmology · 2023
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Continuous wavelet transform analysis of ERG in patients with diabetic retinopathy.Documenta ophthalmologica. Advances in ophthalmology · 2021
    Article
  19. Article
  20. 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

6 authors.

Mathieu GauvinDepartment of Ophthalmology & Neurology-Neurosurgery, Research Institute of the McGill University Health Centre/Montreal Children's Hospital, Montreal, Quebec, Canada.
Maja SustarEye Hospital, University Medical Centre, Ljubljana, Slovenia.
John M LittleDepartment of Ophthalmology & Neurology-Neurosurgery, Research Institute of the McGill University Health Centre/Montreal Children's Hospital, Montreal, Quebec, Canada.
Jelka BreceljEye Hospital, University Medical Centre, Ljubljana, Slovenia.
Jean-Marc LinaDépartement de Génie Électrique, École de Technologie Supérieure, Montréal, Québec, Canada ; Centre de Recherches Mathématiques, Montréal, Québec, Canada.
Pierre LachapelleDepartment of Ophthalmology & Neurology-Neurosurgery, Research Institute of the McGill University Health Centre/Montreal Children's Hospital, Montreal, Quebec, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDiscrete wavelet transform (DWT) analyses suggest that the 20- and 40-Hz components of the short-flash photopic electroretinogram (ERG) are closely related to the ON and OFF pathways, respectively. With the DWT, we examined how the ERG ON and OFF components are modulated by the stimulus intensity and/or duration.

methodsDiscrete wavelet transform descriptors (20, 40 Hz and 40:20-Hz ratio) were extracted from ERGs evoked to 25 combinations of flash durations (150-5 ms) and strengths (0.8-2.8 log cd.m

resultsIn ERGs evoked to the 150-ms stimulus (to separate the ON and OFF ERGs), the 40:20-Hz ratio of ON ERGs (mean ± SD: 0.49 ± 0.04) was significantly smaller (

conclusionsDiscrete wavelet transform allows for an accurate determination of ON and OFF retinal pathways even in ERGs evoked to a short flash. To our knowledge, the significant OFF facilitatory effect evidenced with shorter stimuli has not previously been reported. TRANSLATIONAL RELEVANCE: The DWT approach should offer a rapid, easy, and reproducible approach to retrospectively and prospectively evaluate the function of the retinal ON and OFF pathways using the standard (short-flash duration) clinical ERG stimulus.

Indexed as

electroretinogramhumanON and OFFstimulus durationstimulus strengthwavelet transform

Identifiers

PMID28097047
PMCPMC5235331

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.