Evidence map›Paper›PMID 42143030›Full record

ArticleNature communications2026

Precision fMRI reveals that the language network exhibits adult-like left-hemispheric lateralization by 4 years of age.

Ola Ozernov-Palchik, Amanda M O'Brien, Elizabeth Jiachen Lee, Hilary Richardson, Rachel Romeo, Moshe Poliak, Benjamin Lipkin, Hannah Small, Jimmy Capella, Alfonso Nieto-Castañón and 3 more

Abstract read
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. The Extended Language Network: Language-Responsive Brain Areas Whose Contributions to Language Remain To Be Discovered.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  3. Article
  4. Article
  5. The emergence of the language system in the toddler brain.bioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Ola Ozernov-Palchik *McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA. oozernov@mit.edu.ORCID http://orcid.org/0000-0003-0055-6642
Amanda M O'Brien *McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
Elizabeth Jiachen LeeMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
Hilary RichardsonSchool of Philosophy, Psychology, and Language Sciences, University of Edinburgh, Edinburgh, UK.ORCID http://orcid.org/0000-0003-3444-805X
Rachel RomeoDepartment of Human Development and Quantitative Methodology, University of Maryland, College Park, MD, USA.ORCID http://orcid.org/0000-0002-0315-4385
Moshe PoliakDepartment of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Benjamin LipkinMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
Hannah SmallDepartment of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA.
Jimmy CapellaDepartment of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Alfonso Nieto-CastañónMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
Rebecca SaxeMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.ORCID http://orcid.org/0000-0003-2377-1791
John D E GabrieliMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
Evelina FedorenkoMcGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, MA, USA. evelina9@mit.edu.ORCID http://orcid.org/0000-0003-3823-514X

Funding

TRAINING FOR SPEECH AND HEARING SCIENCEST32DC000038 · NIDCD · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI Gwenaelle S Geleoc · 1992 to 2026
$21.8M
Computational Neuroscience of Language Processing in the Human BrainU01NS121471 · NINDS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI FEDORENKO, EVELINA, RICHARDSON, ROBERT MARK · 2021 to 2025
$3.2M
Functional reorganization of the language and domain-general multiple demand systems in aphasiaR01DC016950 · NIDCD · BOSTON UNIVERSITY (CHARLES RIVER CAMPUS) · PI FEDORENKO, EVELINA, KIRAN, SWATHI · 2019 to 2023
$3.2M
The neural architecture of pragmatic processingR01DC016607 · NIDCD · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI FEDORENKO, EVELINA · 2018 to 2022
$2.4M
Impairments of Theory of Mind disrupt patterns of brain activityR01MH096914 · NIMH · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI SAXE, REBECCA R · 2012 to 2016
$1.6M
Neurocognitive Basis of Language Comprehension in Children with DyslexiaF32HD100064 · NICHD · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI OZERNOV-PALCHIK, OLA · 2019 to 2022
$238k
The Role of the Motor System in Speech and Language in AutismF31DC020864 · NIDCD · HARVARD MEDICAL SCHOOL · PI O'BRIEN, AMANDA · 2023 to 2024
$68k
NICHD NIH HHS F32 HD100064NIDCD NIH HHS F31 DC020864NIDCD NIH HHS R01 DC016607NIDCD NIH HHS R01 DC016950NIDCD NIH HHS T32 DC000038NIMH NIH HHS R01 MH096914NINDS NIH HHS U01 NS121471U.S. Department of Health & Human Services | NIH | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) HD100064
6 · The paper itself

Abstract

In adults, left hemisphere (LH) damage often leads to aphasia, but many cases of early damage leave linguistic processing intact, with a functional language system developing in the right hemisphere. To explain this early apparent equipotentiality of the two hemispheres for language, some have proposed that the language system is more bilateral during early development and becomes increasingly left-lateralized with age. We examined language lateralization using fMRI in two large developmental cohorts (total n = 273 children aged 4-16 years; n = 107 adults). Strong, adult-like LH lateralization (in response magnitude and activation volume) was evident by age 4, although other features of the LH language network showed protracted development, including the magnitude of language response and the strength of functional connectivity. Thus, although the RH can take over language function in some cases of early brain damage, this plasticity occurs in spite of adult-level LH bias present by age 4 years.

Indexed as

BrainFunctional LateralityLanguageLanguage DevelopmentMagnetic Resonance ImagingAdolescentBrain MappingChildChild, PreschoolFemaleHumansMale

Identifiers

PMID42143030
PMCPMC13376885

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.