Brain functional connectivity difference in the complete network of an entire village: The role of social network size and embeddedness

Won Tak Joo, Seyul Kwak, Yoosik Youm, Jeanyung Chey

Research output: Contribution to journalArticle

5 Citations (Scopus)


Social networks are known to protect cognitive function in old age. For the first time, this study examines how social network size and social network embeddedness measured by k-core score are associated with functional connectivity in the brain using the complete social network of an entire village. According to the results, social network size has both positive and negative associations with functional connectivity; showing no meaningful pattern relative to distance among brain regions. However, older adults deeply embedded in the complete network tend to maintain functional connectivity between long-distance regions even after controlling for other covariates such as age, gender, education, and Mini-Mental State Examination score. Network Based Statistics (NBS) also revealed strong and consistent evidence that social network embeddedness has component-level associations with functional connectivity among brain regions, especially between inferior prefrontal and occipital/parietal lobes.

Original languageEnglish
Article number4465
JournalScientific reports
Issue number1
Publication statusPublished - 2017 Dec 1


All Science Journal Classification (ASJC) codes

  • General

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