Evidence map›Paper›PMID 32747661›Full record

ArticleScientific reports2020

A large-scale estimate on the relationship between language and motor lateralization.

Julian Packheiser, Judith Schmitz, Larissa Arning, Christian Beste, Onur Güntürkün, Sebastian Ocklenburg

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 21 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 3 pooled it
3.5field-weighted citation impact, top 6% of its field
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

21 citing papers in PubMed, 3 syntheses or guidelines pooled it, 70 citations in OpenAlex.

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  18. With childhood hemispherectomy, one hemisphere can support-but is suboptimal for-word and face recognition.Proceedings of the National Academy of Sciences of the United States of America · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Julian PackheiserDepartment of Biopsychology, Institute for Cognitive Neuroscience, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany. julian.packheiser@rub.de.
Judith SchmitzSchool of Medicine, University of St Andrews, St Andrews, UK.
Larissa ArningDepartment of Human Genetics, Ruhr University Bochum, Bochum, Germany.
Christian BesteCognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany.
Onur GüntürkünDepartment of Biopsychology, Institute for Cognitive Neuroscience, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany.
Sebastian OcklenburgDepartment of Biopsychology, Institute for Cognitive Neuroscience, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany.
Ruhr University Bochum · DEUniversity Hospital Carl Gustav Carus · DEUniversity of St Andrews · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human language is dominantly processed in the left cerebral hemisphere in most of the population. While several studies have suggested that there are higher rates of atypical right-hemispheric language lateralization in left-/mixed-handers, an accurate estimate of this association from a large sample is still missing. In this study, we comprised data from 1,554 individuals sampled in three previous studies in which language lateralization measured via dichotic listening, handedness and footedness were assessed. Overall, we found a right ear advantage indicating typical left-hemispheric language lateralization in 82.1% of the participants. While we found significantly more left-handed individuals with atypical language lateralization on the categorical level, we only detected a very weak positive correlation between dichotic listening lateralization quotients (LQs) and handedness LQs using continuous measures. Here, only 0.4% of the variance in language lateralization were explained by handedness. We complemented these analyses with Bayesian statistics and found no evidence in favor of the hypothesis that language lateralization and handedness are related. Footedness LQs were not correlated with dichotic listening LQs, but individuals with atypical language lateralization also exhibited higher rates of atypical footedness on the categorical level. We also found differences in the extent of language lateralization between males and females with males exhibiting higher dichotic listening LQs indicating more left-hemispheric language processing. Overall, these findings indicate that the direct associations between language lateralization and motor asymmetries are much weaker than previously assumed with Bayesian correlation analyses even suggesting that they do not exist at all. Furthermore, sex differences seem to be present in language lateralization when the power of the study is adequate suggesting that endocrinological processes might influence this phenotype.

Indexed as

LanguageAdolescentAdultAgedDichotic Listening TestsFemaleFunctional LateralityHumansMaleMiddle AgedYoung Adult

Identifiers

PMID32747661
PMCPMC7398911
OpenAlexW3046294523

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.