Evidence map›Paper›PMID 33009001›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2020

Analysis of Parvocellular and Magnocellular Visual Pathways in Human Retina.

Rania A Masri, Ulrike Grünert, Paul R Martin

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Approaching a connectome of the human foveal retina.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
  6. Connectome of a human foveal retina.bioRxiv : the preprint server for biology · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
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  13. Article
  14. The Predictive and Explanatory Power of the Contrast Theory of Myopia.Translational vision science & technology · 2025
    Article
  15. Immunohistochemistry and Spatial Density of Müller Cells in the Human Fovea.Investigative ophthalmology & visual science · 2025
    Article
  16. Clinical anatomy of the macula.Medical hypothesis, discovery & innovation ophthalmology journal · 2025
    Review
  17. The role of RGC degeneration in the pathogenesis of glaucoma.International journal of biological sciences · 2025
    Review
  18. Article
  19. Review
  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

3 authors at 3 institutions in 1 country.

Rania A MasriFaculty of Medicine and Health, Save Sight Institute and Discipline of Clinical Ophthalmology, The University of Sydney, Sydney, New South Wales 2000, Australia.
Ulrike GrünertFaculty of Medicine and Health, Save Sight Institute and Discipline of Clinical Ophthalmology, The University of Sydney, Sydney, New South Wales 2000, Australia.
Paul R MartinFaculty of Medicine and Health, Save Sight Institute and Discipline of Clinical Ophthalmology, The University of Sydney, Sydney, New South Wales 2000, Australia prmartin@sydney.edu.au.
ARC Centre of Excellence for Integrative Brain Function · AUAustralian Research Council · AUUniversity of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Two main subcortical pathways serving conscious visual perception are the midget-parvocellular (P), and the parasol-magnocellular (M) pathways. It is generally accepted that the P pathway serves red-green color vision, but the relative contribution of P and M pathways to spatial vision is a long-standing and unresolved issue. Here, we mapped the spatial sampling properties of P and M pathways across the human retina. Data were obtained from immunolabeled vertical sections of six postmortem male and female human donor retinas and imaged using high-resolution microscopy. Cone photoreceptors, OFF-midget bipolar cells (P pathway), OFF-diffuse bipolar (DB) types DB3a and DB3b (M pathway), and ganglion cells were counted along the temporal horizontal meridian, taking foveal spatial distortions (postreceptoral displacements) into account. We found that the density of OFF-midget bipolar and OFF-midget ganglion cells can support one-to-one connections to 1.05-mm (3.6°) eccentricity. One-to-one connections of cones to OFF-midget bipolar cells are present to at least 10-mm (35°) eccentricity. The OFF-midget ganglion cell array acuity is well-matched to photopic spatial acuity measures throughout the central 35°, but the OFF-parasol array acuity is well below photopic spatial acuity, supporting the view that the P pathway underlies high-acuity spatial vision. Outside the fovea, array acuity of both OFF-midget and OFF-DB cells exceeds psychophysical measures of photopic spatial acuity. We conclude that parasol and midget pathway bipolar cells deliver high-acuity spatial signals to the inner plexiform layer, but outside the fovea, this spatial resolution is lost at the level of ganglion cells.

Indexed as

AdultFemaleFovea CentralisHumansMaleMiddle AgedRetinaRetinal Bipolar CellsRetinal Cone Photoreceptor CellsRetinal Ganglion CellsVisual AcuityVisual Pathwayshuman visionmagnocellularparvocellularprimate retinaspatial acuitysubcortical visual pathways

Identifiers

PMID33009001
PMCPMC7574660
OpenAlexW3091609777

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.