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Variability: Analysis01:11

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In Vivo Targeting of Neural Progenitor Cells in Ferret Neocortex by In Utero Electroporation
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The macro-structural variability of the human neocortex.

Frithjof Kruggel1

  • 1Department of Biomedical Engineering, University of California, Irvine, USA.

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|February 8, 2018
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Summary
This summary is machine-generated.

Human neocortex structure varies greatly between individuals. This study identified seven cortical "communities" that group common structural features, suggesting early brain development segregation and a more meaningful anatomical division than traditional lobes.

Keywords:
Cortical communitiesNeocortexStructural variabilitySulcal roots

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Area of Science:

  • Neuroscience
  • Human Anatomy
  • Brain Imaging

Background:

  • The human neocortex exhibits significant individual structural variability, particularly in secondary gyri and sulci.
  • This variability complicates comparisons in neuroimaging studies and limits precise anatomical localization.
  • Primary cortical structures are consistent, but individual differences in secondary structures pose challenges for research.

Purpose of the Study:

  • To quantify structural variability within the human neocortex.
  • To investigate the spatial relationship between common and individual cortical structures.
  • To propose a novel, anatomically meaningful subdivision of the neocortex.

Main Methods:

  • Utilized structural magnetic resonance imaging (MRI) data from the Human Connectome Project (900 Subjects Release).
  • Employed a data-driven analytical approach to identify patterns of cortical structure.
  • Defined seven distinct cortical 'communities' based on structural similarities.

Main Results:

  • Identified seven cortical 'communities' representing common structural features.
  • Found that individual variability is largely confined within these communities.
  • Observed similarities between community structure and brain development at 32 weeks gestation, suggesting early segregation.

Conclusions:

  • Cortical 'communities' represent anatomically meaningful groupings of common neocortical structures.
  • These communities may segregate early in brain development.
  • Subdividing the neocortex into these communities offers a more precise anatomical framework than traditional lobar divisions.