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Related Experiment Videos

Getting there and being there in the cerebral cortex

M Götz1

  • 1SmithKline Beecham, Harlow, Essex, England, UK.

Experientia
|April 15, 1995
PubMed
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Positional information guides mammalian neocortex development. Despite cell migration, early cues specify functional areas, with some dispersed cells respecified to maintain organization.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • The mammalian neocortex comprises functional areas for specific information processing.
  • Understanding the developmental mechanisms of this functional specification is crucial.
  • Cellular migration plays a key role in establishing the developing nervous system's architecture.

Purpose of the Study:

  • To investigate the relationship between cellular migration and positional information in cortical development.
  • To review evidence for early positional specification and cellular dispersion during migration.
  • To propose a model explaining how positional information is relayed during neocortex development.

Main Methods:

  • Review of existing literature on cortical development, cellular migration, and positional cues.

Related Experiment Videos

  • Synthesis of evidence for early specification and cell dispersion.
  • Comparative analysis with other central nervous system (CNS) regions.

    • Main Results:

    • Positional specification occurs early in cortical development.
    • Cellular dispersion during migration is a common phenomenon across the CNS.
    • A model is proposed where stable cues provide positional information, and displaced cells are respecified.

    Conclusions:

    • Positional cues are essential for specifying functional areas in the mammalian neocortex.
    • Mechanisms relaying positional specification must account for widespread cellular dispersal.
    • Radial glial cells are suggested as potential providers of positional information in the developing nervous system.