Multi-level fMRI analysis applied to hemispheric specialization in the language network, functional areas, and their behavioral correlations in the ABCD sample

Day, Trevor K.M.; Hermosillo, Robert; Conan, Gregory; Randolph, Anita; Perrone, Anders; Earl, Eric; Byington, Nora; Hendrickson, Timothy J.; Elison, Jed T.; Fair, Damien A.; Feczko, Eric

doi:10.1016/j.dcn.2024.101355

Developmental Cognitive Neuroscience

2024

DOI: 10.1016/j.dcn.2024.101355

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Multi-level fMRI analysis applied to hemispheric specialization in the language network, functional areas, and their behavioral correlations in the ABCD sample

Trevor K.M. Day,

Robert Hermosillo,

Gregory Conan

et al.

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

Ozernov-Palchik,

O’Brien,

Lee

et al. 2024

Preprint

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Left hemisphere damage in adulthood often leads to linguistic deficits, but many cases of early damage leave linguistic processing preserved, and a functional language system can develop in the right hemisphere. To explain this early apparent equipotentiality of the two hemispheres for language, some have proposed that the language system is bilateral during early development and only becomes left-lateralized with age. We examined language lateralization using functional magnetic resonance imaging with two large pediatric cohorts (total n=273 children ages 4-16; n=107 adults). Strong, adult-level left-hemispheric lateralization (in activation volume and response magnitude) was evident by age 4. Thus, although the right hemisphere can take over language function in some cases of early brain damage, and although some features of the language system do show protracted development (magnitude of language response and strength of inter-regional correlations in the language network), the left-hemisphere bias for language is robustly present by 4 years of age.

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

Ozernov-Palchik,

O’Brien,

Lee

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

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Multi-level fMRI analysis applied to hemispheric specialization in the language network, functional areas, and their behavioral correlations in the ABCD sample

Cited by 1 publication

References 75 publications

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

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

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