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Titolo:
Brain segmentation and forebrain development in amniotes
Autore:
Puelles, L;
Indirizzi:
Univ Murcia, Fac Med, Dept Morphol Sci, E-30100 Murcia, Spain Univ MurciaMurcia Spain E-30100 Dept Morphol Sci, E-30100 Murcia, Spain
Titolo Testata:
BRAIN RESEARCH BULLETIN
fascicolo: 6, volume: 55, anno: 2001,
pagine: 695 - 710
SICI:
0361-9230(200108)55:6<695:BSAFDI>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROSENCEPHALIC NEURAL PLATE; REGULATORY GENE-EXPRESSION; MEDIAL GANGLIONIC EMINENCE; CENTRAL-NERVOUS-SYSTEM; TYROSINE-HYDROXYLASE; MOUSE FOREBRAIN; BASAL FOREBRAIN; CEREBRAL-CORTEX; HUMAN EMBRYOS; NEURONS;
Keywords:
prosomeric model; forebrain; patterning; segmentation; neuromeres; longitudinal zones; histogenesis; migration; diencephalon; telencephalon; pallium; subpallium;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
92
Recensione:
Indirizzi per estratti:
Indirizzo: Puelles, L Univ Murcia, Fac Med, Dept Morphol Sci, E-30100 Murcia, Spain Univ Murcia Murcia Spain E-30100 l Sci, E-30100 Murcia, Spain
Citazione:
L. Puelles, "Brain segmentation and forebrain development in amniotes", BRAIN RES B, 55(6), 2001, pp. 695-710

Abstract

This essay contains a general introduction to the segmental paradigm postulated for interpreting morphologically cellular and molecular data on the developing forebrain of vertebrates. The introduction examines the nature ofthe problem, indicating the role of topological analysis in conjunction with analysis of various developmental cell processes in the developing brain. Another section explains how morphological analysis in essence depends onassumptions (paradigms), which should be reasonable and well founded in other research, but must remain tentative until time reveals their necessary status as facts for evolving theories (or leads to their substitution by alternative assumptions). The chosen paradigm affects many aspects of the analysis, including the sectioning planes one wants to use and the meaning of what one sees in brain sections. Dorsoventral patterning is presented as the fundament for defining what is longitudinal, whereas less well-understoodanteroposterior patterning results from transversal regionalization. The concept of neural segmentation is covered, first historically, and then stepby step, explaining the prosomeric model in basic detail, stopping at the diencephalon, the extratelencephalic secondary prosencephalon, and the telencephalon. A new pallial model for telencephalic development and evolution is presented as well, updating the proposed homologies between the sauropsidian and mammalian telencephalon. (C) 2001 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 10:03:40