Evidence map›Paper›PMID 23615546›Full record

ArticleJournal of neurophysiology2013

Compressive spatial summation in human visual cortex.

Kendrick N Kay, Jonathan Winawer, Aviv Mezer, Brian A Wandell

Open access · greenAbstract read
In one paragraph

Article in Journal of neurophysiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 203 papers.

0numbers the graph read from it
0cells of the map it votes in
203citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

203 citing papers in PubMed, 391 citations in OpenAlex.

  1. Unique semantic space in the brain of each beholder predicts perceived similarity.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Trial
  2. Article
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  5. Sulcal pleating captures functional boundaries in human visual cortex.bioRxiv : the preprint server for biology · 2026
    Article
  6. Article
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  8. Visual field map size constrains working memory precision.bioRxiv : the preprint server for biology · 2026
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  20. Spatial Frequency Tuning Follows Scale Invariance in the Human Visual Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article

143 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Kendrick N KayDepartment of Psychology, Stanford University, Stanford, CA, USA. kendrick@post.harvard.edu
Jonathan Winawer
Aviv Mezer
Brian A Wandell
Stanford University · US

Funding

WAVELENGTH DISCRIMINATION AT MODULATION THRESHOLDR01EY003164 · NEI · STANFORD UNIVERSITY · PI WANDELL, BRIAN A · 1985 to 2011
$3.9M
Multimodal Imaging of Spatiotemporal Integration in the Human Visual SystemK99EY022116 · NEI · STANFORD UNIVERSITY · PI WINAWER, JONATHAN A · 2012 to 2013
$222k
NEI NIH HHS K99 EY022116NEI NIH HHS K99-EY-022116NEI NIH HHS R01-EY-03164
6 · The paper itself

Abstract

Neurons within a small (a few cubic millimeters) region of visual cortex respond to stimuli within a restricted region of the visual field. Previous studies have characterized the population response of such neurons using a model that sums contrast linearly across the visual field. In this study, we tested linear spatial summation of population responses using blood oxygenation level-dependent (BOLD) functional MRI. We measured BOLD responses to a systematic set of contrast patterns and discovered systematic deviation from linearity: the data are more accurately explained by a model in which a compressive static nonlinearity is applied after linear spatial summation. We found that the nonlinearity is present in early visual areas (e.g., V1, V2) and grows more pronounced in relatively anterior extrastriate areas (e.g., LO-2, VO-2). We then analyzed the effect of compressive spatial summation in terms of changes in the position and size of a viewed object. Compressive spatial summation is consistent with tolerance to changes in position and size, an important characteristic of object representation.

Indexed as

Models, NeurologicalAdultHumansMagnetic Resonance ImagingMaleNeuronsPhotic StimulationVisual CortexfMRIhuman visual cortexpopulation receptive fieldspatial nonlinearityspatial summation

Identifiers

PMID23615546
PMCPMC3727075
OpenAlexW2084518818

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.