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Extraversion and Neuroticism Related to Topological Efficiency in White Matter Network: An Exploratory Study Using
Yajing Pang1,2, Heng Chen1,2, Yuyan Chen1,2
1The Clinical Hospital of Chengdu Brain Science Institute, MOE Key Lab for Neuroinformation, University of Electronic Science and Technology of China, Chengdu, China.
Brain Topography
|July 27, 2018
Summary
Brain white matter (WM) network connectivity links to personality traits. Specific WM network efficiencies in the medial prefrontal cortex (MPFC) and hippocampus correlate with extraversion and neuroticism.
Area of Science:
- Neuroscience
- Psychology
- Brain Imaging
Background:
- Individual differences in personality, specifically extraversion and neuroticism, are linked to white matter (WM) fiber integrity.
- These personality traits are crucial for integrating emotion, cognition, and behavior, functions reliant on large-scale brain networks.
Purpose of the Study:
- To investigate the neural underpinnings of extraversion and neuroticism at the brain network level.
- To characterize the relationship between white matter network connectivity and these two personality dimensions.
Main Methods:
- Diffusion tensor imaging (DTI) was conducted on 68 healthy participants.
- Graph theory analysis was applied to a white matter (WM) network to assess whole-brain and regional connectivity.
Main Results:
- Extraversion showed a negative association with local efficiency in the medial prefrontal cortex (MPFC).
- Neuroticism was positively associated with local efficiency in the hippocampus and global efficiency in the MPFC.
- These regions exhibited connectivity with other cortical and subcortical areas.
Conclusions:
- Specific personality dimensions, extraversion and neuroticism, are associated with altered information transfer efficiency in prefrontal-limbic brain regions.
- These findings offer insights into the neural mechanisms underlying personality traits.
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