ArticleProceedings. Biological sciences2018
Social brain volume is associated with in-degree social network size among older adults.
Article in Proceedings. Biological sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
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Who cites it
43 citing papers in PubMed.
- Contextualizing the adolescent social brain: Links to social health using data from the Adolescent Brain Cognitive Development Study.Developmental cognitive neuroscience · 2026Article
- The brain network underlying social participation: a multimodal, data-driven investigation.Brain imaging and behavior · 2026Article
- Associations between self-reported change in lifestyle behaviors and brain health: Findings from the Healthy Brain Initiative.Journal of Alzheimer's disease : JAD · 2026Article
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- Why friendship and loneliness affect our health.Annals of the New York Academy of Sciences · 2025Review
- Stress, hypothalamic-pituitary-adrenal axis, hypothalamic-pituitary-gonadal axis, and aggression.Metabolic brain disease · 2024Review
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- "GO" to move toward dementia-friendly communities: A pilot study.Brain and behavior · 2024Article
- Social Brain Perspectives on the Social and Evolutionary Neuroscience of Human Language.Brain sciences · 2024Review
- Associations Between Social Network Characteristics and Brain Structure Among Older Adults.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024Article
- Salience Network Functional Connectivity Mediates Association Between Social Engagement and Cognition in Non-Demented Older Adults: Exploratory Investigation.Journal of Alzheimer's disease reports · 2024Article
- Neural signatures of social inferences predict the number of real-life social contacts and autism severity.Nature communications · 2023Article
- Social enrichment on the job: Complex work with people improves episodic memory, promotes brain reserve, and reduces the risk of dementia.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2023Article
- Review
- Neuropsychiatric correlates of olfactory identification and traumatic brain injury in a sample of impulsive violent offenders.Frontiers in psychology · 2023Article
- Social isolation and the brain in the pandemic era.Nature human behaviour · 2022Review
- Amygdala but not hippocampal damage associated with smaller social network size.Neuropsychologia · 2022Article
- Motion, Relation, and Passion in Brain Physiological and Cognitive Aging.Brain sciences · 2022Article
- Social Networks and Cognitive Reserve: Network Structure Moderates the Association Between Amygdalar Volume and Cognitive Outcomes.The journals of gerontology. Series B, Psychological sciences and social sciences · 2022Article
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The social brain hypothesis proposes that large neocortex size evolved to support cognitively demanding social interactions. Accordingly, previous studies have observed that larger orbitofrontal and amygdala structures predict the size of an individual's social network. However, it remains uncertain how an individual's social connectedness reported by other people is associated with the social brain volume. In this study, we found that a greater in-degree network size, a measure of social ties identified by a subject's social connections rather than by the subject, significantly correlated with a larger regional volume of the orbitofrontal cortex, dorsomedial prefrontal cortex and lingual gyrus. By contrast, out-degree size, which is based on an individual's self-perceived connectedness, showed no associations. Meta-analytic reverse inference further revealed that regional volume pattern of in-degree size was specifically involved in social inference ability. These findings were possible because our dataset contained the social networks of an entire village, i.e. a global network. The results suggest that the in-degree aspect of social network size not only confirms the previously reported brain correlates of the social network but also shows an association in brain regions involved in the ability to infer other people's minds. This study provides insight into understanding how the social brain is uniquely associated with sociocentric measures derived from a global network.
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