Evidence map›Paper›PMID 29907791›Full record

ArticleScientific reports2018

Foveal Crowding Resolved.

Daniel R Coates, Dennis M Levi, Phanith Touch, Ramkumar Sabesan

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Article
  2. Article
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  4. Looking for Details: Fine-Grained Visual Search at the Foveal Scale.bioRxiv : the preprint server for biology · 2025
    Article
  5. Article
  6. Article
  7. Oculomotor Contributions to Foveal Crowding.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  8. Article
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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

4 authors.

Daniel R CoatesCollege of Optometry, University of Houston, Houston, TX, USA. drcoates@uh.edu.
Dennis M LeviSchool of Optometry, Vision Science Graduate Group, Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA.ORCID 0000-0002-5350-8639
Phanith TouchDepartment of Ophthalmology, University of Washington School of Medicine, Seattle, WA, USA.
Ramkumar SabesanDepartment of Ophthalmology, University of Washington School of Medicine, Seattle, WA, USA.

Funding

Vision Research CoreP30EY001730 · NEI · UNIVERSITY OF WASHINGTON · PI MAUREEN E NEITZ · 1985 to 2026
$23.5M
A New Approach to Restoring Visual Acuity and Stereopsis in Adults with AmblyopiaR01EY020976 · NEI · UNIVERSITY OF CALIFORNIA BERKELEY · PI BANKS, MARTIN S, BAVELIER, DAPHNE I · 2010 to 2020
$4.7M
NEI NIH HHS P30 EY001730NEI NIH HHS R01 EY020976
6 · The paper itself

Abstract

Crowding is the substantial interference of neighboring items on target identification. Crowding with letter stimuli has been studied primarily in the visual periphery, with conflicting results for foveal stimuli. While a cortical locus for peripheral crowding is well established (with a large spatial extent up to half of the target eccentricity), disentangling the contributing factors in the fovea is more challenging due to optical limitations. Here, we used adaptive optics (AO) to overcome ocular aberrations and employed high-resolution stimuli to precisely characterize foveal lateral interactions with high-contrast letters flanked by letters. Crowding was present, with a maximal edge-to-edge interference zone of 0.75-1.3 minutes at typical unflanked performance levels. In agreement with earlier foveal contour interaction studies, performance was non-monotonic, revealing a recovery effect with proximal flankers. Modeling revealed that the deleterious effects of flankers can be described by a single function across stimulus sizes when the degradation is expressed as a reduction in sensitivity (expressed in Z-score units). The recovery, however, did not follow this pattern, likely reflecting a separate mechanism. Additional analysis reconciles multiple results from the literature, including the observed scale invariance of center-to-center spacing, as well as the size independence of edge-to-edge spacing.

Indexed as

AdultContrast SensitivityFemaleFovea CentralisHumansMalePattern Recognition, Visual

Identifiers

PMID29907791
PMCPMC6004009

What OpenQuestion holds

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Registered trials

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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.