Evidence map›Paper›PMID 32994535›Full record

ArticleScientific reports2020

Full-field flicker evoked changes in parafoveal retinal blood flow.

Raymond L Warner, Alberto de Castro, Lucie Sawides, Tom Gast, Kaitlyn Sapoznik, Ting Luo, Stephen A Burns

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

21 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Article
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  4. Vascular regeneration and blood flow recovery in glaucoma.Frontiers in cell and developmental biology · 2026
    Review
  5. Article
  6. Article
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  15. Review
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  19. Article
  20. Imaging the Retinal Vasculature.Annual review of vision science · 2021
    Review
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 1 institution in 1 country.

Raymond L WarnerSchool of Optometry, Indiana University, Bloomington, 47405, USA. raylwarn@iu.edu.
Alberto de CastroSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Lucie SawidesSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Tom GastSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Kaitlyn SapoznikSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Ting LuoSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Stephen A BurnsSchool of Optometry, Indiana University, Bloomington, 47405, USA.
Indiana University Bloomington · US

Funding

Adaptive Optics Imaging of Human Retinal Vascular Structure and FunctionR01EY024315 · NEI · TRUSTEES OF INDIANA UNIVERSITY · PI BURNS, STEPHEN A · 2015 to 2024
$4.3M
NEI NIH HHS R01 EY024315
6 · The paper itself

Abstract

When retinal activity is increased by exposure to dynamic visual stimuli, blood vessels dilate and the flow of blood within vessels increases to meet the oxygen and glucose demands of the neurons. This relationship is termed 'neurovascular coupling' and it is critical for regulating control of the human retinal vasculature. In this study, we used a recently developed technique based on a dual-beam adaptive optics scanning laser ophthalmoscope to measure changes in red blood cell velocities, vessel diameter, and flow in interconnected small parafoveal retinal vessels (< 50 µm) of nine healthy participants. A full-field flicker stimulus was presented onto the retina to induce a vascular response to neural activity. Flicker stimulation increased blood velocity, vessel diameter, and therefore flow in arterioles, capillaries, and venules in all nine subjects. ANOVA and post hoc t-test showed significant increases in velocity and flow in arterioles and venules. These measurements indicate that the mechanism of neurovascular coupling systematically affects the vascular response in small retinal vessels in order to maintain hemodynamic regulation in the retina when exposed to visual stimulation, in our case flicker. Our findings may provide insight into future investigations on the impairments of neurovascular coupling from vascular diseases such as diabetic mellitus.

Indexed as

AdultArteriolesBlood Flow VelocityFemaleHemodynamicsHumansLaser-Doppler FlowmetryMaleNeurovascular CouplingOxygenPhotic StimulationRegional Blood FlowRetinaRetinal ArteryRetinal VesselsVasodilationOxygen

Identifiers

PMID32994535
PMCPMC7524838
OpenAlexW3090538533

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.