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Related Experiment Video

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
17:06

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

Structure-function relationships underlying calculation: a combined diffusion tensor imaging and fMRI study.

L van Eimeren1, R H Grabner, K Koschutnig

  • 1Department of Psychology, University of Western Ontario, Ontario, Canada.

Neuroimage
|April 13, 2010
PubMed
Summary
This summary is machine-generated.

This study links white matter integrity in the left superior corona radiata (SCR) to brain activity in the left angular gyrus (lAG) during arithmetic calculations. This reveals a key structure-function relationship in the brain's calculation network.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • The left angular gyrus (lAG) is crucial for arithmetic problem-solving, particularly fact retrieval.
  • Understanding the relationship between functional brain activation and underlying white matter structure in calculation remains limited.

Purpose of the Study:

  • To investigate the relationship between white matter structure and grey matter function in arithmetic processing.
  • To identify specific white matter tracts associated with neural activity in the left angular gyrus during calculation.

Main Methods:

  • Collected diffusion tensor imaging (DTI) and functional magnetic resonance imaging (fMRI) data during a mental arithmetic task.
  • Correlated fractional anisotropy (FA) values from white matter regions with fMRI activation in grey matter regions.

Main Results:

  • Observed a significant link between the integrity of the left superior corona radiata (SCR) and lAG activation during calculation.
  • This structure-function relationship was strongest for arithmetic problems solved via fact retrieval (small problem size).

Conclusions:

  • Demonstrated a connection between the structural integrity of the SCR and functional activation in the lAG.
  • Provided evidence for a structure-function relationship in the left temporoparietal cortex crucial for calculation.