Evidence map›Paper›PMID 32464426›Full record

ArticleVision research2020

Mechanisms underlying simultaneous brightness contrast: Early and innate.

Pawan Sinha, Sarah Crucilla, Tapan Gandhi, Dylan Rose, Amy Singh, Suma Ganesh, Umang Mathur, Peter Bex

Open access · greenAbstract read
In one paragraph

Article in Vision research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
3.9field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Reduced visual contrast suppression during major depressive episodes.Journal of psychiatry & neuroscience : JPN · 2021
    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

8 authors at 5 institutions in 2 countries.

Pawan SinhaDepartment of Brain and Cognitive Sciences, MIT, United States. Electronic address: psinha@mit.edu.
Sarah CrucillaDivision of Geological and Planetary Sciences, Caltech, United States.
Tapan GandhiDepartment of Electrical Engineering, Indian Inst. of Tech., New Delhi, India.
Dylan RoseDepartment of Psychology, Northeastern University, United States.
Amy SinghDivision of Human Factors, Google Inc., United States.
Suma GaneshDr. Shroff's Charity Eye Hospital, New Delhi, India.
Umang MathurDr. Shroff's Charity Eye Hospital, New Delhi, India.
Peter BexDepartment of Psychology, Northeastern University, United States.
Dr. Shroff’s Charity Eye Hospital · INNortheastern University · USCalifornia Institute of Technology · USGoogle (United States) · USMcGovern Institute for Brain Research · US

Funding

Project Prakash: Development of Object Perception After Late Sight OnsetR01EY020517 · NEI · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI SINHA, PAWAN · 2011 to 2025
$8.9M
NEI NIH HHS R01 EY020517
6 · The paper itself

Abstract

In the phenomenon of simultaneous brightness contrast, two patches, one on a dark background and the other on a light one, appear to have different brightness despite being physically equi-luminant. Elucidating the phenomenon's underlying mechanisms is relevant for the larger question of how the visual system makes photometric judgments in images. Accounts over the past century have spanned low-, mid- and high-level visual processes, but a definitive resolution has not emerged. We present three studies that collectively demonstrate that the computations underlying this phenomenon are low-level, instantiated prior to binocular fusion, and available innately, without need for inferential learning via an individual's visual experience. In our first two studies, we find that strong brightness induction is obtained even when observers are unaware of any luminance differences in the neighborhoods of the probe patches. Results with dichoptic displays reveal that eye of origin, although not evident consciously, has a marked influence on the eventual brightness percept of the probe patches, thereby localizing brightness estimation to a site preceding binocular fusion. The third study uses conventional simultaneous brightness contrast displays, but an unusual group of participants: Congenitally blind children whom we were able to treat surgically. The results demonstrate an immediate susceptibility to the simultaneous brightness illusion after sight onset. Together, these data strongly constrain the search for mechanisms underlying a fundamental brightness phenomenon.

Indexed as

LightAdolescentCataract ExtractionChildContrast SensitivityFemaleHumansIllusionsLens Implantation, IntraocularMalePseudophakiaVisual PerceptionBrightness perceptionDichoptic displaysLate sight onsetNature versus nurtureSimultaneous contrast illusion

Identifiers

PMID32464426
PMCPMC7310601
OpenAlexW3029538695

What OpenQuestion holds

Textmetadata
LicenceTDM
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.