Evidence map›Paper›PMID 36603025›Full record

ArticlePLoS biology2023

Cortical representations of numbers and nonsymbolic quantities expand and segregate in children from 5 to 8 years of age.

Tomoya Nakai, Cléa Girard, Léa Longo, Hanna Chesnokova, Jérôme Prado

Abstract read
In one paragraph

Article in PLoS biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. 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
  2. Article
  3. Review
  4. Brain Representation of Numerosity across the Senses and Presentation Formats.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. 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

5 authors.

Tomoya NakaiLyon Neuroscience Research Center (CRNL), INSERM U1028-CNRS UMR5292, University of Lyon, Bron, France.ORCID 0000-0001-5225-0894
Cléa GirardLyon Neuroscience Research Center (CRNL), INSERM U1028-CNRS UMR5292, University of Lyon, Bron, France.
Léa LongoLyon Neuroscience Research Center (CRNL), INSERM U1028-CNRS UMR5292, University of Lyon, Bron, France.
Hanna ChesnokovaLyon Neuroscience Research Center (CRNL), INSERM U1028-CNRS UMR5292, University of Lyon, Bron, France.
Jérôme PradoLyon Neuroscience Research Center (CRNL), INSERM U1028-CNRS UMR5292, University of Lyon, Bron, France.ORCID 0000-0003-3548-5610

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Number symbols, such as Arabic numerals, are cultural inventions that have transformed human mathematical skills. Although their acquisition is at the core of early elementary education in children, it remains unknown how the neural representations of numerals emerge during that period. It is also unclear whether these relate to an ontogenetically earlier sense of approximate quantity. Here, we used multivariate fMRI adaptation coupled with within- and between-format machine learning to probe the cortical representations of Arabic numerals and approximate nonsymbolic quantity in 89 children either at the beginning (age 5) or four years into formal education (age 8). Although the cortical representations of both numerals and nonsymbolic quantities expanded from age 5 to age 8, these representations also segregated with learning and development. Specifically, a format-independent neural representation of quantity was found in the right parietal cortex, but only for 5-year-olds. These results are consistent with the so-called symbolic estrangement hypothesis, which argues that the relation between symbolic and nonsymbolic quantity weakens with exposure to formal mathematics in children.

Indexed as

Child DevelopmentParietal LobeAdaptation, PhysiologicalChildChild, PreschoolHumansMagnetic Resonance ImagingMathematics

Identifiers

PMID36603025
PMCPMC9815645

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.