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Related Experiment Videos

Structure--function spatial covariance in the human visual cortex.

M K Hasnain1, P T Fox, M G Woldorff

  • 1Research Imaging Center, The University of Texas Health Science Center at San Antonio, TX 78229-3900, USA.

Cerebral Cortex (New York, N.Y. : 1991)
|July 19, 2001
PubMed
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Sulcal landmarks help predict brain

Area of Science:

  • Neuroscience
  • Neuroimaging
  • Brain Anatomy

Background:

  • Sulcal landmarks are used to predict functional brain areas.
  • Previous methods lacked quantitative analysis of this relationship.

Purpose of the Study:

  • To quantitatively examine the predictive value of sulcal landmarks for functional brain areas.
  • To investigate structure-function spatial covariance in the human brain.

Main Methods:

  • Anatomical MRI and positron emission tomography (PET) were used to create cortical models and identify visual areas.
  • Sulcal landmarks and functional areas were projected into standardized stereotaxic space to compute spatial covariances.
  • Statistical analysis determined significant correlations (P < 0.05) between geometric centers of landmarks and areas.

Related Experiment Videos

Main Results:

  • Significant spatial covariances were found between some sulci and functional areas, and among functional areas.
  • Standardized spatial normalization does not fully capture the predictive value of structural or functional locations.
  • The strength of structure-function spatial covariance was quantified.

Conclusions:

  • Selected sulcal and functional landmarks can improve spatial normalization accuracy.
  • Findings provide quantitative insights into the etiology of structure-function correspondence in brain development.