Evidence map›Paper›PMID 24959652›Full record

ArticleVision research2014

Ex vivo ERG analysis of photoreceptors using an in vivo ERG system.

Frans Vinberg, Alexander V Kolesnikov, Vladimir J Kefalov

Abstract read
In one paragraph

Article in Vision research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing 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

64 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. The physiology of dark adaptation: Progress and future directions.Progress in retinal and eye research · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Full-field electroretinogram recorded with skin electrodes in 6- to 12-year-old children.Documenta ophthalmologica. Advances in ophthalmology · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. The origins of the full-field flash electroretinogram b-wave.Frontiers in molecular neuroscience · 2023
    Review
  19. Article
  20. Article

4 more citing papers are in PubMed but not listed here.

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

3 authors.

Frans VinbergWashington University School of Medicine, Department of Ophthalmology and Visual Sciences, 660 S. Euclid Avenue, St. Louis, MO 63110, USA. Electronic address: vinbergf@vision.wustl.edu.
Alexander V KolesnikovWashington University School of Medicine, Department of Ophthalmology and Visual Sciences, 660 S. Euclid Avenue, St. Louis, MO 63110, USA.
Vladimir J KefalovWashington University School of Medicine, Department of Ophthalmology and Visual Sciences, 660 S. Euclid Avenue, St. Louis, MO 63110, USA.

Funding

WASHINGTON UNIVERSITY CENTER VISION RESEARCHP30EY002687 · NEI · WASHINGTON UNIVERSITY · PI Philip Raymond Williams · 1985 to 2026
$18.4M
Pharmacological Treatment of Retinal DiseasesR24EY021126 · NEI · CASE WESTERN RESERVE UNIVERSITY · PI PALCZEWSKI, KRZYSZTOF · 2010 to 2014
$12.8M
MECHANISMS OF ADAPTATION IN MAMMALIAN CONESR01EY019312 · NEI · WASHINGTON UNIVERSITY · PI KEFALOV, VLADIMIR JIVKOV · 2009 to 2017
$3.3M
NEI NIH HHS EY002687NEI NIH HHS EY019312NEI NIH HHS EY021126NEI NIH HHS P30 EY002687NEI NIH HHS R01 EY019312NEI NIH HHS R24 EY021126
6 · The paper itself

Abstract

The Function of the retina and effects of drugs on it can be assessed by recording transretinal voltage across isolated retina that is perfused with physiological medium. However, building ex vivo ERG apparatus requires substantial amount of time, resources and expertise. Here we adapted a commercial in vivo ERG system for transretinal ERG recordings from rod and cone photoreceptors and compared rod and cone signaling between ex vivo and in vivo environments. We found that the rod and cone a- and b-waves recorded with the transretinal ERG adapter and a standard in vivo ERG system are comparable to those obtained from live anesthetized animals. However, ex vivo responses are somewhat slower and their oscillatory potentials are suppressed as compared to those recorded in vivo. We found that rod amplification constant (A) was comparable between ex vivo and in vivo conditions, ∼10-30s(-2) depending on the choice of response normalization. We estimate that the A in cones is between 3 and 6s(-2) in ex vivo conditions and by assuming equal A in vivo we arrive to light funnelling factor of 3 for cones in the mouse retina. The ex vivo ERG adapter provides a simple and affordable alternative to designing a custom-built transretinal recordings setup for the study of photoreceptors. Our results provide a roadmap to the rigorous quantitative analysis of rod and cone responses made possible with such a system.

Indexed as

AnimalsDark AdaptationElectroretinographyMiceMice, Inbred C57BLPhotic StimulationRetinaRetinal Cone Photoreceptor CellsRetinal Rod Photoreceptor Cellsa-Waveb-WaveElectroretinogramPhotoreceptorTransretinal ERG

Identifiers

PMID24959652
PMCPMC4149224

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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.