How does hemispheric specialization contribute to human-defining cognition?

Hartwigsen, Gesa; Bengio, Yoshua; Bzdok, Danilo

doi:10.1016/j.neuron.2021.04.024

Cited by 75 publications

(64 citation statements)

References 197 publications

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“…In the light of present and previous research, there may be evolutionary advantages to increasingly sophisticated hemispheric specialization ( Hartwigsen et al. 2021 ), which may resurface as special relationships in how the left and brain hemisphere are associations with SES dimensions in the present study.…”

Section: Discussionmentioning

confidence: 46%

Pattern learning reveals brain asymmetry to be linked to socioeconomic status

Poeppl

Dimas

Sakreida

et al. 2022

Cerebral Cortex Communications

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Socioeconomic status (SES) anchors individuals in their social network layers. Our embedding in the societal fabric resonates with habitus, world view, opportunity, and health disparity. It remains obscure how distinct facets of SES are reflected in the architecture of the central nervous system. Here, we capitalized on multivariate multi-output learning algorithms to explore possible imprints of SES in gray and white matter structure in the wider population (n ≈ 10,000 UK Biobank participants). Individuals with higher SES, compared to those with lower SES, showed a pattern of increased region volumes in the left brain and decreased region volumes in the right brain. The analogous lateralization pattern emerged for the fiber structure of anatomical white matter tracts. Our multimodal findings suggest hemispheric asymmetry as an SES-related brain signature, which was consistent across six different indicators of SES: degree, education, income, job, neighborhood, and vehicle count. Hence, hemispheric specialization may have evolved in human primates in a way that reveals crucial links to socioeconomic status.

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Section: Discussionmentioning

confidence: 46%

Pattern learning reveals brain asymmetry to be linked to socioeconomic status

Poeppl

Dimas

Sakreida

et al. 2022

Cerebral Cortex Communications

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“…Overall, the current study indicates a clear distinction in developmental emphases for the left and right hemisphere from the onset of (restored) hearing: The left hemisphere, primarily the areas next from the auditory cortex in the ventral and dorsal streams of speech processing, appears to strive to acquire listening and speaking abilities concurrently, while the right hemisphere appears responsible for non-linguistic aspects of auditory processing. Thus, the current results provide longitudinal developmental evidence for theories of functional asymmetries of the brain (Perani, Saccuman et al 2010, Arimitsu, Uchida-Ota et al 2011, Bisiacchi and Cainelli 2021, Bourke and Todd 2021, Hartwigsen, Bengio et al 2021).…”

Section: Discussionsupporting

confidence: 53%

Anti-phasic oscillatory development for speech and noise processing in cochlear implanted toddlers

Wang

Zhao

et al. 2022

Preprint

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Human brain demonstrates amazing readiness for speech and language learning at birth, but the auditory development preceding such readiness remains unknown. Cochlear implanted (CI) children with prelingual deafness provide a unique opportunity to study this developmental stage. Using functional near-infrared spectroscopy, we revealed that the brain of CI children was nearly irresponsive to sounds at CI hearing onset. With increasing CI experiences up to 32 months, the brain demonstrated function, region and hemisphere specific development. Most strikingly, the left anterior temporal lobe showed an oscillatory trajectory, changing in opposite phases for speech and noise. In addition, speech responses increased linearly in left sylvian parieto-temporal area and right inferior frontal gyrus, and noise responses changed in U shape in right supramarginal gyrus. Such cortical development predicted behavioral improvement. The study provides the first longitudinal brain imaging evidence for early auditory development preceding speech acquisition in the human brain.

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“…For social club members, dorsal and ventral volume effects for cingulate cortex differed between the two hemispheres. Given that social behaviour is potentially most uniquely developed in the human species (Frith & Frith, 2010) it may come as no surprise to find brain asymmetry features, as hemispheric asymmetry is also exceptionally well developed in the human brain (Hartwigsen et al, 2021). The regional findings match the notable interindividual variability of the limbictrait associations at the network-level of our Bayesian hierarchical analyses.…”

Section: Demographic Profiling Analyses Of Social Participationmentioning

confidence: 99%

Social belonging: Brain structure and function is linked to membership in sports teams, religious groups and social clubs

Kieckhaefer

Schilbach

Bzdok

2021

Preprint

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Human behaviour across the life span is driven by the psychological need to belong, from kindergarten to bingo nights. Being part of social groups constitutes a backbone for communal life, and confers many benefits for physical and mental health. Capitalizing on neuroimaging and behavioural data from ~40.000 participants from the UK Biobank population cohort, we used structural and functional analyses to explore how social participation is reflected in the human brain. Across three different types of social groups, structural analyses point towards variance in ventromedial prefrontal cortex, fusiform gyrus and anterior cingulate cortex as structural substrates tightly linked to social participation. Functional connectivity analyses emphasized the importance of default mode and limbic network, but also showed differences for sports teams and religious groups as compared to social clubs. Taken together, our findings establish the structural and functional integrity of the default mode network as a neural signature of social belonging.

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How does hemispheric specialization contribute to human-defining cognition?

Cited by 75 publications

References 197 publications

Pattern learning reveals brain asymmetry to be linked to socioeconomic status

Pattern learning reveals brain asymmetry to be linked to socioeconomic status

Anti-phasic oscillatory development for speech and noise processing in cochlear implanted toddlers

Social belonging: Brain structure and function is linked to membership in sports teams, religious groups and social clubs

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