Cited by 236Functional Brain Connectivity StudiesHealth disparities and outcomesAdvanced Neuroimaging Techniques and Applications

The default network of the human brain is associated with perceived social isolation

Open access
Spreng, R. Nathan, Dimas, Emile, Mwilambwe-Tshilobo, Laetitia, Dagher, Alain, Koellinger, Philipp, Nave, Gideon, Ong, Anthony, Kernbach, Julius M. +8 more·2020·Nature Communications

Abstract

Humans survive and thrive through social exchange. Yet, social dependency also comes at a cost. Perceived social isolation, or loneliness, affects physical and mental health, cognitive performance, overall life expectancy, and increases vulnerability to Alzheimer’s disease-related dementias. Despite severe consequences on behavior and health, the neural basis of loneliness remains elusive. Using the UK Biobank population imaging-genetics cohort (n = ~40,000, aged 40–69 years when recruited, mean age = 54.9), we test for signatures of loneliness in grey matter morphology, intrinsic functional coupling, and fiber tract microstructure. The loneliness-linked neurobiological profiles converge on a collection of brain regions known as the ‘default network’. This higher associative network shows more consistent loneliness associations in grey matter volume than other cortical brain networks. Lonely individuals display stronger functional communication in the default network, and greater microstructural integrity of its fornix pathway. The findings fit with the possibility that the up-regulation of these neural circuits supports mentalizing, reminiscence and imagination to fill the social void.

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Authors
Spreng, R. N., Dimas, E., Mwilambwe-Tshilobo, L., Dagher, A., Koellinger, P., Nave, G., Ong, A., Kernbach, J. M., Wiecki, T. V., Ge, T., Li, Y., Holmes, A. J., Yeo, B. T. T., Turner, G. R., Dunbar, R. I. M., & Bzdok, D.
Affiliations
  • Montreal Neurological Institute and Hospital (CA)
  • McGill University (CA)
  • Vrije Universiteit Amsterdam (NL)
  • University of Pennsylvania (US)
  • Cornell University (US)
  • Universitätsklinikum Aachen (DE)
  • Broad Institute (US)
  • Yale University (US)
  • National University of Singapore (SG)
  • York University (CA)
  • University of Oxford (GB)
Corresponding author
  • Spreng, R. Nathan
  • Bzdok, Danilo
Venue
Nature Communications
Published
2020-12-15
Volume
11
Issue
1
Pages
6393-6393
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3111446413
Cited by
236
References
83
Citations by year
2026: 33 · 2025: 43 · 2024: 38 · 2023: 31 · 2022: 63 · 2021: 27 · 2020: 1
FWCI
16.39
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship@McGill (McGill) (submittedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion, other-oa)
  • VU Research Portal (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
  • RWTH Publications (RWTH Aachen)
Funders
U.S. Department of Health & Human Services | National Institutes of Health (R01AG068563A)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Social Sciences › Health › Health disparities and outcomes
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
loneliness, perceived social isolation, default mode network, gray matter volume, functional connectivity, fornix, white matter microstructure, neuroimaging genetics, social cognition, mentalization, UK Biobank
MeSH terms
Adult, Aged, Alzheimer Disease, Brain, Brain Mapping, Female, Humans, Loneliness, Male, Mental Health, Middle Aged, Models, Biological, Social Isolation, Fornix, Brain, Social Networking, Gray Matter

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