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Cognitive learning is associated with gray matter changes in healthy human individuals: a tensor-based morphometry

Antonia Ceccarelli1, Maria Assunta Rocca, Elisabetta Pagani

  • 1Neuroimaging Research Unit, Institute of Experimental Neurology, Scientific Institute and University Ospedale San Raffaele, Milan, Italy.

Neuroimage
|July 21, 2009
PubMed
Summary

Cognitive learning causes short-term brain gray matter changes in specific cortical regions. Tensor-based morphometry revealed increased gray matter volume in the frontal cortex and precuneus after two weeks of cognitive training.

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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Cognitive Science

Background:

  • Longitudinal voxel-based morphometry studies show brain changes after learning.
  • Previous research focused on motor learning, with less known about cognitive learning's short-term effects.

Purpose of the Study:

  • To investigate short-term structural brain gray matter changes linked to cognitive learning using tensor-based morphometry (TBM).
  • To assess if cognitive training induces measurable gray matter alterations in healthy subjects over a two-week period.

Main Methods:

  • Applied tensor-based morphometry (TBM) to analyze 3D T1-weighted MRI scans from 32 students at baseline and after two weeks.
  • Compared gray matter volume changes between a group undergoing cognitive training and a control group not in training.
  • Utilized statistical parametric mapping to identify significant regional gray matter differences.

Main Results:

  • No significant baseline differences in regional gray matter volume between the two groups.
  • The cognitive training group showed significant gray matter volume increases in the dorsomedial frontal cortex, orbitofrontal cortex, and precuneus compared to the control group (p<0.001).

Conclusions:

  • Cognitive learning induces short-term structural gray matter changes in specific brain regions involved in cognition.
  • These findings suggest potential applications for developing rehabilitation strategies in neurological disease patients.
  • TBM is a viable method for detecting subtle, short-term structural brain changes associated with cognitive processes.