Evidence map›Paper›PMID 27638209›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Absence of visual experience modifies the neural basis of numerical thinking.

Shipra Kanjlia, Connor Lane, Lisa Feigenson, Marina Bedny

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
–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

42 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Excitatory and inhibitory networks diverge following early blindness.Cerebral cortex (New York, N.Y. : 1991) · 2026
    Article
  3. Initial organization and progressive expansion of the math-responsive brain network during the first school years.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
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  9. Learning to Program "Recycles" Preexisting Frontoparietal Population Codes of Logical Algorithms.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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  15. Spatiotemporal Dynamics of Successive Activations across the Human Brain during Simple Arithmetic Processing.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  16. Article
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  19. Entropy, complexity, and maturity in children's neural responses to naturalistic video lessons.Cortex; a journal devoted to the study of the nervous system and behavior · 2023
    Article
  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

4 authors.

Shipra KanjliaDepartment of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218 skanjli1@jhu.edu.
Connor LaneDepartment of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218.
Lisa FeigensonDepartment of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218.
Marina BednyDepartment of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In humans, the ability to reason about mathematical quantities depends on a frontoparietal network that includes the intraparietal sulcus (IPS). How do nature and nurture give rise to the neurobiology of numerical cognition? We asked how visual experience shapes the neural basis of numerical thinking by studying numerical cognition in congenitally blind individuals. Blind (n = 17) and blindfolded sighted (n = 19) participants solved math equations that varied in difficulty (e.g., 27 - 12 = x vs. 7 - 2 = x), and performed a control sentence comprehension task while undergoing fMRI. Whole-cortex analyses revealed that in both blind and sighted participants, the IPS and dorsolateral prefrontal cortices were more active during the math task than the language task, and activity in the IPS increased parametrically with equation difficulty. Thus, the classic frontoparietal number network is preserved in the total absence of visual experience. However, surprisingly, blind but not sighted individuals additionally recruited a subset of early visual areas during symbolic math calculation. The functional profile of these "visual" regions was identical to that of the IPS in blind but not sighted individuals. Furthermore, in blindness, number-responsive visual cortices exhibited increased functional connectivity with prefrontal and IPS regions that process numbers. We conclude that the frontoparietal number network develops independently of visual experience. In blindness, this number network colonizes parts of deafferented visual cortex. These results suggest that human cortex is highly functionally flexible early in life, and point to frontoparietal input as a mechanism of cross-modal plasticity in blindness.

Indexed as

MathematicsThinkingAdultAgedBehaviorBlindnessBrainBrain MappingDemographyFemaleHumansLanguageMaleMiddle AgedOccipital LobeRestblindnessdevelopmentnumberplasticityvision

Identifiers

PMID27638209
PMCPMC5056030

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.