Evidence map›Paper›PMID 28739915›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Interactions between feedback and lateral connections in the primary visual cortex.

Hualou Liang, Xiajing Gong, Minggui Chen, Yin Yan, Wu Li, Charles D Gilbert

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing 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

51 citing papers in PubMed.

  1. Trial
  2. Effects of Expectation, Attention, and NMDA Receptor Blockade on Feedforward and Feedback Processing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  3. Article
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  8. Temporal Contour Integration Deficits in Children With Amblyopia.Investigative ophthalmology & visual science · 2025
    Article
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  12. Article
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  15. Article
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  20. Visual illusion susceptibility in autism: A neural model.The European journal of neuroscience · 2022
    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

6 authors.

Hualou LiangSchool of Biomedical Engineering, Drexel University, Philadelphia, PA 19104.
Xiajing GongSchool of Biomedical Engineering, Drexel University, Philadelphia, PA 19104.
Minggui ChenState Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
Yin YanState Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
Wu LiState Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China; gilbert@rockefeller.edu liwu@bnu.edu.cn.
Charles D GilbertThe Rockefeller University, New York, NY 10065 gilbert@rockefeller.edu liwu@bnu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Perceptual grouping of line segments into object contours has been thought to be mediated, in part, by long-range horizontal connectivity intrinsic to the primary visual cortex (V1), with a contribution by top-down feedback projections. To dissect the contributions of intraareal and interareal connections during contour integration, we applied conditional Granger causality analysis to assess directional influences among neural signals simultaneously recorded from visual cortical areas V1 and V4 of monkeys performing a contour detection task. Our results showed that discounting the influences from V4 markedly reduced V1 lateral interactions, indicating dependence on feedback signals of the effective connectivity within V1. On the other hand, the feedback influences were reciprocally dependent on V1 lateral interactions because the modulation strengths from V4 to V1 were greatly reduced after discounting the influences from other V1 neurons. Our findings suggest that feedback and lateral connections closely interact to mediate image grouping and segmentation.

Indexed as

contour integrationfeedback connectionGranger causalityhorizontal connectionperceptual grouping

Identifiers

PMID28739915
PMCPMC5559040

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.