Related Experiment Video
Updated: May 23, 2025
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Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy
Published on: August 5, 2014
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Shared genetics and causal relationship between sociability and the brain's default mode network.
Giuseppe Fanelli1,2, Jamie Robinson3, Chiara Fabbri1
1Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Psychological Medicine
|May 22, 2025
Summary
This study explored the genetic links between sociability and the brain's default mode network (DMN) using advanced genomic methods. Findings reveal shared genetic factors and potential causal relationships, identifying key genes for future research in neuropsychiatric disorders.
Area of Science:
- Neurogenetics
- Cognitive Neuroscience
- Psychiatric Genetics
Background:
- The default mode network (DMN) is crucial for social cognition and is implicated in neuropsychiatric disorders.
- Altered DMN function is linked to social impairments, but its genetic underpinnings with sociability are not well understood.
Purpose of the Study:
- To investigate the shared genetic architecture between sociability and DMN-related functional MRI (fMRI) traits.
- To determine the causal relationship between sociability and DMN function.
Main Methods:
- Utilized large-scale genome-wide association study (GWAS) summary statistics for sociability and DMN fMRI traits.
- Performed genetic correlation analyses and bi-directional Mendelian randomization (MR).
- Integrated multi-omics data (eQTLs, snRNA-seq, PPI networks) for gene prioritization.
Main Results:
- Identified significant genetic correlations between sociability and DMN activity/connectivity in specific brain regions.
- MR analyses indicated potential causal effects of sociability on 12 DMN fMRI traits.
- Prioritized 17 genes, including LINGO1, ELAVL2, CTNND1, and DRD2, as key candidates.
Conclusions:
- The study presents a novel gene prioritization strategy combining genomic and transcriptomic data.
- Findings offer insights into the biological mechanisms of sociability and its relevance to neuropsychiatric disorders.
- Results can inform future research on the development, prognosis, and treatment of these conditions.
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