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Individual differences in brain structure and resting-state functional connectivity associated with type A behavior

Y Wang1, D Wei1, W Li1

  • 1Key Laboratory of Cognition and Personality (SWU), Ministry of Education, Chongqing 400715, PR China; School of Psychology, Southwest University, Chongqing 400715, PR China.

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Summary
This summary is machine-generated.

Type A behavior pattern (TABP) is linked to increased gray matter in the brain's left sgACC and altered functional connectivity in fronto-striatal networks, offering new insights into its neural basis.

Keywords:
Type A behavior pattern (TABP)resting-state functional connectivity (rsFC)subgenual anterior cingulate cortex (sgACC)voxel-based morphometry (VBM)

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Area of Science:

  • Neuroscience
  • Psychology
  • Behavioral Science

Background:

  • Type A behavior pattern (TABP) involves competitiveness, hostility, time urgency, and impatience.
  • These traits significantly impact physical and mental health.
  • Neural correlates of individual differences in TABP remain understudied.

Purpose of the Study:

  • To investigate the neural correlates of TABP using neuroimaging techniques.
  • To examine associations between TABP and brain structure (gray matter volume) and function (resting-state functional connectivity).

Main Methods:

  • Voxel-based morphometry (VBM) was used to analyze regional gray matter volume (rGMV).
  • Resting-state functional connectivity (rsFC) analysis examined neural network activity.
  • Correlations between TABP traits and neuroimaging measures were assessed.

Main Results:

  • TABP positively correlated with rGMV in the left subgenual anterior cingulate cortex (sgACC).
  • TABP positively correlated with rsFC between the left ventral striatum and left ventromedial prefrontal cortex (vmPFC) and right rostral anterior cingulate cortex (rACC).
  • These findings implicate fronto-striatal networks in TABP.

Conclusions:

  • Increased rGMV in the left sgACC may indicate immature functioning related to impatience in TABP.
  • Altered rsFC in fronto-striatal regions is associated with achievement striving, aggressiveness, and worry under pressure in TABP.
  • These structural and functional findings provide a basis for understanding the neural circuitry of TABP.