Evidence map›Paper›PMID 34447935›Full record

ArticleCerebral cortex communications2021

Symbols Are Special: An fMRI Adaptation Study of Symbolic, Nonsymbolic, and Non-Numerical Magnitude Processing in the Human Brain.

H Moriah Sokolowski, Zachary Hawes, Lien Peters, Daniel Ansari

Abstract read
In one paragraph

Article in Cerebral cortex communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 3 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

12 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Pooled it
  4. Article
  5. Lesion-symptom mapping reveals differential relationships between language and precise versus approximate numeracy.Cortex; a journal devoted to the study of the nervous system and behavior · 2025
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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.

H Moriah SokolowskiRotman Research Institute, Baycrest Hospital, North York, ON M6A 2E1, Canada.ORCID https://orcid.org/0000-0002-8997-9061
Zachary HawesOntario Institute for Studies in Education, University of Toronto, Toronto, ON M5S1V6, Canada.
Lien PetersNumerical Cognition Laboratory, Department of Psychology & Brain and Mind Institute, University of Western Ontario, London, ON N6A 3K7, Canada.
Daniel AnsariNumerical Cognition Laboratory, Department of Psychology & Brain and Mind Institute, University of Western Ontario, London, ON N6A 3K7, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

How are different formats of magnitudes represented in the human brain? We used functional magnetic resonance imaging adaptation to isolate representations of symbols, quantities, and physical size in 45 adults. Results indicate that the neural correlates supporting the passive processing of number symbols are largely dissociable from those supporting quantities and physical size, anatomically and representationally. Anatomically, passive processing of quantities and size correlate with activation in the right intraparietal sulcus, whereas symbolic number processing, compared with quantity processing, correlates with activation in the left inferior parietal lobule. Representationally, neural patterns of activation supporting symbols are dissimilar from neural activation patterns supporting quantity and size in the bilateral parietal lobes. These findings challenge the longstanding notion that the culturally acquired ability to conceptualize symbolic numbers is represented using entirely the same brain systems that support the evolutionarily ancient system used to process quantities. Moreover, these data reveal that regions that support numerical magnitude processing are also important for the processing of non-numerical magnitudes. This discovery compels future investigations of the neural consequences of acquiring knowledge of symbolic numbers.

Indexed as

fMRIhuman uniquenessmagnitude processingneural adaptationnonsymbolicnumerical cognitionsymbolic

Identifiers

PMID34447935
PMCPMC8382912

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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.