Titlebook: Space Physics; An Introduction to P May-Britt Kallenrode Textbook 2004Latest edition Springer-Verlag Berlin Heidelberg 2004 Heliosphere.Mag

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May-Britt Kallenrodem (CNS) (Aguayo et al. 1979, 1982, 1983, 1984, Richardson et al. 1980, 1981, 1984, Benfey and Aguayo 1982). However, peripheral axons poorly penetrate grafts of CNS tissue implanted between the cut ends of a peripheral nerve (Aguayo et al 1978, Weinberg and Spencer 1979, Perkins et al 1980), and few

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May-Britt Kallenrodem (CNS) (Aguayo et al. 1979, 1982, 1983, 1984, Richardson et al. 1980, 1981, 1984, Benfey and Aguayo 1982). However, peripheral axons poorly penetrate grafts of CNS tissue implanted between the cut ends of a peripheral nerve (Aguayo et al 1978, Weinberg and Spencer 1979, Perkins et al 1980), and few

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May-Britt Kallenrodelt CNS is confined to compensatory fiber sprouting and not mitotic divisions of nerve cells.. Therefore, neurons that die as a result of regressive processes can only be replaced by implantation after harvesting from an external source. Intracerebral grafting of developing neuroblasts into the adult

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May-Britt Kallenrodetance. Recent investigations have shown that grafts can produce a relatively normal cellular pattern in the cerebellum. and can make functional connections in the rat visual system,. hippocampus,. basal ganglia,. or hypothalamic system.. A common thread throughout such experiments is that the neural

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n understanding of the mechanisms regulating neural ontogeny cannot simply come from descriptive anatomy or physiology. As the early experimental embryologists realized, hypotheses about development may be born of observations on normal embryos, but experimental manipulations are necessary to prove

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May-Britt Kallenrode science standpoint, namely results on computing capabilities of Automata Networks and, as a particular case, of Neural Networks. The complexity results have been obtained in a more general framework by several authors (see for instance [Gr,K,Mi,Sm,T1]) but they are not still well known in the conte