Cortical neurons arise in symmetric and asymmetric division zones and migrate through specific phases. Noctor, S. C, Martı́nez-Cerdeño, Verónica, Ivic, L., & Kriegstein, A. R Nat Neurosci, 7(2):136–144, United States, January, 2004.
abstract   bibtex   
Precise patterns of cell division and migration are crucial to transform the neuroepithelium of the embryonic forebrain into the adult cerebral cortex. Using time-lapse imaging of clonal cells in rat cortex over several generations, we show here that neurons are generated in two proliferative zones by distinct patterns of division. Neurons arise directly from radial glial cells in the ventricular zone (VZ) and indirectly from intermediate progenitor cells in the subventricular zone (SVZ). Furthermore, newborn neurons do not migrate directly to the cortex; instead, most exhibit four distinct phases of migration, including a phase of retrograde movement toward the ventricle before migration to the cortical plate. These findings provide a comprehensive and new view of the dynamics of cortical neurogenesis and migration.
@ARTICLE{Noctor2004-il,
  title    = "Cortical neurons arise in symmetric and asymmetric division zones
              and migrate through specific phases",
  author   = "Noctor, Stephen C and Mart{\'\i}nez-Cerde{\~n}o, Ver{\'o}nica and
              Ivic, Lidija and Kriegstein, Arnold R",
  abstract = "Precise patterns of cell division and migration are crucial to
              transform the neuroepithelium of the embryonic forebrain into the
              adult cerebral cortex. Using time-lapse imaging of clonal cells
              in rat cortex over several generations, we show here that neurons
              are generated in two proliferative zones by distinct patterns of
              division. Neurons arise directly from radial glial cells in the
              ventricular zone (VZ) and indirectly from intermediate progenitor
              cells in the subventricular zone (SVZ). Furthermore, newborn
              neurons do not migrate directly to the cortex; instead, most
              exhibit four distinct phases of migration, including a phase of
              retrograde movement toward the ventricle before migration to the
              cortical plate. These findings provide a comprehensive and new
              view of the dynamics of cortical neurogenesis and migration.",
  journal  = "Nat Neurosci",
  volume   =  7,
  number   =  2,
  pages    = "136--144",
  month    =  jan,
  year     =  2004,
  address  = "United States",
  language = "en"
}

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