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Independent biaxial reorganization of the retinotectal projection: A reassessment (1978)

Schmidt, J. T. ; Easter, S. S.

Springer

Experimental brain research 31 (1978), S. 155-162

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ISSN: 1432-1106

Keywords: Goldfish ; Retinotectal reorganization ; Competitive innervation

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary It has been previously suggested that the retinotectal projection can reorganize independently along two orthogonal tectal axes. This possibility was reexamined by removing roughly a quarter of the retina and slightly less than a quarter of the tectum. In the tectal case, the unseated fibers arborized rostral to the ablation, but not lateral to it, and the projection shifted irrespective of tectal axes to maintain topographic order and a roughly uniform representation of retinal areas. In the retinal case, expansion into the denervated quadrant was only from the rostral, never from the medial or lateral directions. Analysis of the movements of fiber arbors shows that they respond to local competition for tectal space rather than following tectal axes.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00237596

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Anionen-Massenspektroskopie von Naturstoffen. VII. Vergleichende Anionen-kationenmassenspektroskopische Untersuchungen von Cumarin-Derivaten (1977)

Voigt, D. ; Schmidt, J. ; Schreiber, K. ; [et al.]

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 767-774

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Anion Mass Spectroscopy of Natural Products. VII. Comparative Anion-cation Mass Spectroscopic Investigations of Coumarin DerivativesElectron attachment mass spectra (2-4eV) of some simple coumarins and furanocoumarins have been studied in comparison with their respective cation mass spectra. The possibility of distinguishing of some isomeric pairs is discussed.

Notes: Die Elektronenanlagerungs-Massenspektren (2-4 eV) von einigen einfachen Cumarinen und Furanocumarinen sind im Vergleich zu ihren entsprechenden Kationenmassenspektren untersucht worden. Die Möglichkeit der Unterscheidung einiger Isomerenpaare wird diskutiert.

Additional Material: 1 Ill.