Evidence map›Paper›PMID 39680393›Full record

ArticleTranslational vision science & technology2024

Refining Flash Visual Evoked Potential Analysis in Rats: A Novel Approach Using Bilateral Epidural Electrodes.

Kwang Min Woo, Yan Guo, Zara Mehrabian, Neil R Miller, Steven L Bernstein

Abstract read
In one paragraph

Article in Translational vision science & technology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

5 authors.

Kwang Min WooWeill Cornell Medical College, New York, NY, USA.
Yan GuoDepartment of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
Zara MehrabianDepartment of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
Neil R MillerWilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Steven L BernsteinDepartment of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.

Funding

The role of optic nerve lamina region stem cells in age-related optic nerve diseaseR01EY032519 · NEI · UNIVERSITY OF MARYLAND BALTIMORE · PI STEVEN L BERNSTEIN · 2022 to 2026
$2.1M
NEI NIH HHS R01 EY032519
6 · The paper itself

Abstract

Purpose: Visual evoked potentials (VEPs) are electrical signals generated at the visual cortex following visual stimulation. Flash VEPs (fVEPs) are produced by global retinal stimulation and are considered an objective measure of the integrity of the entire visual pathway. However, fVEP measurements are highly sensitive to external variables, making relative comparisons of the fVEP waveforms between the two eyes in the same individual challenging. Methods: We used the rodent non-arteritic anterior ischemic optic neuropathy (rNAION) model to induce unilateral ischemic optic neuropathy. The severity of optic disc edema was measured with spectral-domain optical coherence tomography, and visual acuity was measured using a virtual optokinetic system. We developed a procedure utilizing implanted bilateral epidural electrodes and derived a mathematical formula to accurately estimate functional differences between the optic nerves. Immunohistology was performed to quantify retinal ganglion cell (RGC) survival using stereology. Results: Compared to subcutaneous methods, the new approach significantly improves the signal-to-noise ratio and is more repeatable when comparing the two eyes. The derived formula accounts for asymmetry in the afferent inputs to the visual cortex. Visual function calculated using the formula correlates strongly with other recognized metrics of visual function, including RGC survival and visual acuity. Conclusions: We have developed a repeatable and accurate method to calculate the relative visual function of diseased optic nerves compared with a contralateral control eye. Translational Relevance: Our novel method improves fVEP measurement sensitivity and accuracy in rodent preclinical trials, reducing the number of animals needed to achieve statistical significance.

Indexed as

Disease Models, AnimalEvoked Potentials, VisualRetinal Ganglion CellsTomography, Optical CoherenceAnimalsElectrodes, ImplantedEpidural SpaceMaleOptic Neuropathy, IschemicPhotic StimulationRatsVisual AcuityVisual CortexVisual Pathways

Identifiers

PMID39680393
PMCPMC11654769

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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 Socratic graph.