Reorganization of visual pathways following posthatching removal of one retina in pigeons.

The Journal of Comparative Neurology
P BagnoliL Sebastiani

Abstract

Organization of visual pathways was studied in 2-month-old pigeons that underwent unilateral retinal removal on either the day of hatching (ERA, i.e., early retinal ablated) or the 9th day after hatching (LRA, i.e., late retinal ablated). A general size reduction of visual areas contralateral to the removed retina was found in ERA pigeons, which additionally showed an altered differentiation of thalamic visual targets as well as a different cytoarchitectonic arrangement of the superficial layers of the optic tectum. No comparable modifications were found in LRA pigeons. The retinal projections of the remaining eye were studied following intraocular injections of 3H-proline. Both in ERA and LRA pigeons, the distribution of retinofugal afferents to primary visual regions contralateral to the injected eye was similar to that of control pigeons. Anomalous ipsilateral projections from the remaining retina to primary retinorecipient regions were found in ERA pigeons only. Effects of early ablation of one retina on second-order visual connections were also studied. Following injections of wheat germ agglutinin-conjugated horseradish peroxidase (WGA-HRP) into the visual Wulst contralateral to the operated eye, a smaller number of ipsil...Continue Reading

References

Jan 1, 1978·Developmental Neuroscience·S C BondyC York
Jan 1, 1986·Annual Review of Neuroscience·C J Shatz, D W Sretavan
Jan 1, 1987·Brain, Behavior and Evolution·J Stuchbery, D Ehrlich
Mar 1, 1988·The Journal of Comparative Neurology·P D Gamlin, D H Cohen
Jun 1, 1985·Proceedings of the National Academy of Sciences of the United States of America·B L ShookL M Chalupa
May 15, 1985·The Journal of Comparative Neurology·P BagnoliC Bedini
Apr 1, 1966·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·R C Graham, M J Karnovsky
Mar 10, 1984·The Journal of Comparative Neurology·D Ehrlich, R Mark
Dec 20, 1984·The Journal of Comparative Neurology·P GodementM Imbert
Feb 10, 1983·The Journal of Comparative Neurology·P Bagnoli, A Burkhalter
Jan 1, 1980·Neuroscience·P StreitM Cuénod
Oct 1, 1953·Journal of Neuropathology and Experimental Neurology·H KLUVER, E BARRERA

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