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Related Experiment Videos

Human cingulate and paracingulate sulci: pattern, variability, asymmetry, and probabilistic map

T Paus1, F Tomaiuolo, N Otaky

  • 1Montreal Neurological Institute, McGill University, Canada.

Cerebral Cortex (New York, N.Y. : 1991)
|March 1, 1996
PubMed
Summary
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This study mapped the variability of the cingulate sulcus (CS) and paracingulate sulcus (PCS) in 247 healthy brains using MRI. Findings highlight significant anatomical differences and hemispheric asymmetry, crucial for functional neuroimaging interpretation.

Area of Science:

  • Neuroimaging
  • Human Cerebral Cortex Morphology
  • Neuroanatomy

Background:

  • Functional neuroimaging advances necessitate detailed cortical morphology studies.
  • Understanding macro- and microscopic anatomical variations is key for accurate functional mapping.

Purpose of the Study:

  • To investigate the variability in occurrence and location of the cingulate sulcus (CS) and paracingulate sulcus (PCS).
  • To create a probabilistic map of CS and PCS.
  • To correlate morphological findings with functional neuroimaging data.

Main Methods:

  • Acquired high-resolution MRI scans from 247 healthy volunteers.
  • Transformed brain MRIs into standardized stereotaxic space.
  • Marked CS and PCS in 494 hemispheres using 3-D volume software to generate probabilistic maps.

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Main Results:

  • Revealed considerable variability in the location of specific morphological features.
  • Demonstrated striking hemispheric asymmetry in the prominence of the paracingulate sulcus (PCS).
  • Identified variations in CS continuity, branching, PCS presence, and intralimbic sulcus.

Conclusions:

  • Significant anatomical variability exists in the cingulate sulcus and paracingulate sulcus.
  • Hemispheric asymmetry in PCS prominence is a key finding.
  • These morphological insights are vital for interpreting functional neuroimaging of the anterior cingulate cortex.