This e-book info the speedily advancing study at the improvement of the cerebral cortex. subject matters lined comprise: new physiological info exhibiting styles in constructing cortical association; abnormalities of cortical improvement linked to psychiatric issues; and learn on telephone id and regionalization of the cortex.
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Extra resources for Ciba Foundation Symposium 193 - Development of the Cerebral Cortex
This rostrocaudal movement is possible if an exception to random movement occurs when the cells encounter the border between the cortex and striatum. Movement then seems to be directed rostrocaudally. Basically, the periodic spacing that we observe requires a constant cell cycle length and directed migration at the border. That’s one way of reconciling the results but there may be others. Levitt: It may not be possible to compare these two sets of results. Chris Walsh looked at a broad zone, whereas Fishell et a1(1993) looked at a discrete area in the lateral region of the ventricular zone, next to the lateral ganglioniceminence.
IN: Development of the cerebral cortex. Wiley, Chichester (Ciba Found Symp 193) p85-99 Bayer SA, Altman J 1991 Neocortical development. Raven Press, New York. Crandall J, H e m p K 1990 Patterns of cell lineage in the cerebral cortex reveal evidence for developmental boundaries. Exp Neurol 109:131-139 Davis AA, Temple S 1994 A self-renewing multipotential stem cell in embryonic rat cerebral cortex. Nature 372:263-266 Fields-Berry SC, Halliday AL, Cepko CL 1992 A recombinant retrovirus encoding alkaline phosphatase confirms clonal boundary assignments in lineage analysis of murine retina.
36 Discussion LaMuntiu: The Fishell paper raises a different issue. They studied the specification of major functional regions of the telencephalon, but not of cortical areas. Different mechanisms may be operating in these different areas. Chris Walsh, you showed how varying numbers of El 5-labelled, restricted and non-restricted clones fitted your model. These results suggest that most progenitor cells stay in the same area and only a small population of them migrate. At a particular time, 48% of the clones are generated from the original progenitor cells.