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  Functional neuroanatomy of language without speech: An ALE meta-analysis of sign language

Trettenbrein, P., Papitto, G., Friederici, A., & Zaccarella, E. (2020). Functional neuroanatomy of language without speech: An ALE meta-analysis of sign language. Human Brain Mapping. doi:10.1002/hbm.25254.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-32EE-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-4F70-3
Genre: Journal Article

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 Creators:
Trettenbrein, Patrick1, 2, Author              
Papitto, Giorgio1, 2, Author              
Friederici, Angela1, Author              
Zaccarella, Emiliano1, Author              
Affiliations:
1Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              
2International Max Planck Research School on Neuroscience of Communication: Function, Structure, and Plasticity, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_2616696              

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Free keywords: Sign language; Meta-analysis; Modality-independence; Broca’s area
 Abstract: Sign language (SL) conveys linguistic information using gestures instead of sounds. Here, we apply a meta-analytic estimation approach to neuroimaging studies (N = 23; subjects = 316) and ask whether SL comprehension in deaf signers relies on the same primarily left-hemispheric cortical network implicated in spoken and written language (SWL) comprehension in hearing speakers. We show that: (1) SL recruits bilateral fronto-temporo-occipital regions with strong left-lateralization in the posterior inferior frontal gyrus known as Broca’s area, mirroring functional asymmetries observed for SWL. (2) Within this SL network, Broca’s area constitutes a hub which attributes abstract linguistic information to gestures. (3) SL-specific voxels in Broca’s area are also crucially involved in SWL, as confirmed by meta-analytic connectivity modeling using an independent large-scale neuroimaging database. This strongly suggests that the human brain evolved a lateralized language network with a supramodal hub in Broca’s area which computes linguistic information independent of speech.

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Language(s): eng - English
 Dates: 2020-10-092020-10-29
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/hbm.25254
PMID: 33118302
Other: online ahead of print
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Title: Human Brain Mapping
Source Genre: Journal
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Publ. Info: New York : Wiley-Liss
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 1065-9471
CoNE: https://pure.mpg.de/cone/journals/resource/954925601686