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Related Experiment Video

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Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging
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Every individual makes a difference: A trinity derived from linking individual brain morphometry, connectivity and

Zhaoning Li1, Qunxi Dong2, Bin Hu2

  • 1Centre for Cognitive and Brain Sciences and Department of Psychology, University of Macau, Taipa, China.

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|April 13, 2023
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Summary

This study reveals a strong link between brain structure, connectivity, and individual differences in mentalising ability. Brain morphometry and functional connectivity patterns are interconnected with how people understand others' thoughts and feelings.

Keywords:
dyadic regression analysisinter-subject representational similarity analysisinteractive mentalisation questionnairementalisingresting-state functional connectivitysurface-based multivariate morphometry statistics

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Area of Science:

  • Neuroscience
  • Social Cognition
  • Individual Differences

Background:

  • Mentalising ability is crucial for social cognition but individual differences are understudied.
  • The roles of the amygdala and hippocampus in these differences are not well understood.
  • Research has not sufficiently explored the link between brain structure/function and mentalising variability.

Purpose of the Study:

  • To investigate the relationship between brain morphometry, functional connectivity, and individual differences in mentalising ability.
  • To explore how amygdala and hippocampus patterns relate to variations in mentalising.
  • To establish a link between brain structure, connectivity, and social cognition.

Main Methods:

  • Used inter-subject representational similarity analysis (IS-RSA) to analyze data from participants.
  • Developed a novel pipeline (CPP-SD) for high-dimensional morphometry data.
  • Assessed relationships between brain morphometry (MMS), resting-state functional connectivity (rs-FC), and mentalising scores (IMQ).

Main Results:

  • Found significant correlations between brain morphometry, connectivity, and mentalising ability, indicating a 'trinity' of individual patterns.
  • Identified region-specific mentalising associations: hippocampus linked to self-self/self-other, amygdala to other-self.
  • Observed that similar morphometry and connectivity in pairs amplified mentalising similarity.

Conclusions:

  • Demonstrated the feasibility of IS-RSA for studying individual differences in mentalising.
  • Highlighted the interconnectedness of brain structure, function, and social cognitive abilities.
  • Provided insights into how individual brain variations contribute to mentalising capacity.