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White matter integrity, creativity, and psychopathology: disentangling constructs with diffusion tensor imaging.

Rex E Jung1, Rachael Grazioplene, Arvind Caprihan

  • 1Mind Research Network, University of New Mexico, Albuquerque, New Mexico, United States of America. rjung@mrn.org

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|March 27, 2010
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Summary
This summary is machine-generated.

White matter integrity, measured by Fractional Anisotropy (FA), shows inverse correlations with creativity measures. This suggests shared white matter architecture underlies creativity and psychosis-spectrum traits, supporting a continuum model.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Psychiatry

Background:

  • The link between creativity and psychopathology is a debated topic in neuroscience.
  • Previous research indicated relationships between divergent thinking (DT) ability and frontal lobe characteristics (cortical thickness, N-acetyl-aspartate).
  • These findings suggest creativity might exist on a continuum with psychopathology.

Purpose of the Study:

  • To investigate the relationship between white matter integrity and creativity.
  • To examine if Fractional Anisotropy (FA) is associated with measures of creativity, specifically Divergent Thinking (DT) and Openness to Experience.
  • To explore potential overlaps in neural architecture between creativity and psychosis-spectrum traits.

Main Methods:

  • Seventy-two healthy young adults (18-29 years) underwent Diffusion Tensor Imaging (DTI) on a 3 Tesla scanner.
  • Divergent Thinking (DT) ability was assessed using a composite creativity index (CCI) derived from measures scored by four raters.
  • White matter integrity was evaluated using Fractional Anisotropy (FA) values derived from DTI scans.

Main Results:

  • A significant inverse correlation was found between the composite creativity index (CCI) and FA in the left inferior frontal white matter.
  • Openness to Experience showed a significant inverse relationship with FA in the right inferior frontal white matter.
  • These results indicate an overlap in white matter architecture related to creativity and traits associated with the psychotic spectrum.

Conclusions:

  • The study demonstrates an association between white matter integrity in specific frontal regions and creativity measures (DT and Openness).
  • These findings support the hypothesis of shared neural underpinnings for creativity and psychosis-spectrum traits, consistent with a continuum model.
  • The research highlights the role of white matter architecture in the normal variation of creative cognitive traits.