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Related Experiment Videos

Neuroscience. Regional differences in cortical organization.

M S Gazzaniga1

  • 1Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH 03755, USA. michael.s.gazzaniga@visen.dartmouth.edu

Science (New York, N.Y.)
|September 30, 2000
PubMed
Summary

New research reveals significant brain hemisphere asymmetry in area 22, crucial for language processing. Neuronal clusters in the left hemisphere are spaced farther apart with longer axons compared to the right.

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Editor's Note:.

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Brainprints: Computer-Generated Two-Dimensional Maps of the Human Cerebral Cortex in vivo.

Journal of cognitive neuroscience·2013

Area of Science:

  • Neuroscience
  • Brain Anatomy
  • Hemispheric Specialization

Background:

  • Existing brain maps detail regional cellular differences but lack interhemispheric comparisons.
  • Understanding hemispheric variations is crucial for comprehending brain function.

Discussion:

  • This study investigates cellular architecture differences in corresponding cortical regions between the left and right brain hemispheres.
  • Focuses on area 22, a region vital for language processing, to uncover potential asymmetries.

Key Insights:

  • Reveals significant structural asymmetry in area 22 between the left and right hemispheres.
  • Left hemisphere area 22 exhibits neuronal clusters spaced farther apart with longer axonal connections compared to the right hemisphere.

Outlook:

  • These findings challenge the assumption of symmetrical brain structures in functionally specialized areas.
  • Further research is needed to explore the functional implications of this observed hemispheric asymmetry in area 22.

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