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Amygdala-frontoparietal effective connectivity in creativity and humor processing.

Yu-Chen Chan1, Daniel C Zeitlen2, Roger E Beaty2

  • 1Department of Educational Psychology and Counseling, National Tsing Hua University, Hsinchu, Taiwan.

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Summary

The amygdala and frontoparietal network are crucial for processing both creativity and humor. Specific pathways within this circuitry are involved in expectation violation, appreciation, and evaluating typical and atypical forms of both cognitive processes.

Keywords:
alternate usesamygdalaexpectation violationincongruity-resolution humorneuroaestheticsnonsense humortwo-stage processing

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Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Creativity and humor evoke surprise and appreciation, but their neural underpinnings, particularly effective connectivity, are not fully understood.
  • The role of the amygdala and frontoparietal network in processing these complex cognitive functions requires further investigation.

Purpose of the Study:

  • To investigate the shared and distinct patterns of effective connectivity between the amygdala and frontoparietal network during creativity and humor processing.
  • To examine the role of the mesolimbic pathway in the appreciation stages of creativity and humor.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed to study brain activity.
  • Dynamic causal modeling and empirical Bayes analysis were used to assess effective connectivity patterns.

Main Results:

  • The amygdala is central to processing expectation violations and appreciation in both creativity and humor.
  • Amygdala-to-Inferior Frontal Gyrus (IFG) connectivity is vital for evaluating typical and atypical forms of creativity and humor.
  • Amygdala-to-precuneus connectivity supports the evaluation of typical creativity and humor, including novelty, usefulness, and intention understanding.

Conclusions:

  • The amygdala and frontoparietal circuitry play a critical role in the neural processing of both creativity and humor.
  • Distinct connectivity patterns involving the amygdala, IFG, precuneus, and Ventral Tegmental Area (VTA) underpin specific aspects of creativity and humor appreciation.