Location of retinal ganglion cells contributing to the early imprecision in the retinotopic order of the developing projection to the superior colliculus of the wallaby (Macropus eugenii)

1993 ◽  
Vol 331 (1) ◽  
pp. 1-13 ◽  
Author(s):  
L. R. Marotte
2002 ◽  
Vol 16 (7) ◽  
pp. 1295-1304 ◽  
Author(s):  
Elizabeth J. Dallimore ◽  
Qi Cui ◽  
Lyn D. Beazley ◽  
Alan R. Harvey

1990 ◽  
Vol 5 (04) ◽  
pp. 389-394 ◽  
Author(s):  
Daniel M. Caruso ◽  
Michael T. Owczarzak ◽  
Roberta G. Pourcho

AbstractGanglion cells in the albino rat retina were retrogradely labeled with the fluorescent dye, diamidino-yellow, from the superior colliculus. Preembedding and postembedding immunocytochemical techniques were employed in conjunction with computer-assisted image processing to visualize SP- and GABA-immunoreactivity. Examination of flatmount and sectioned retinas revealed that approximately 3% of the ganglion cells projecting to the contralateral superior colliculus exhibit SP-immunoreactivity. Moreover, these cells were found to comprise a subpopulation of the GABA-immunoreactive cells projecting to the rat tectum.


1993 ◽  
Vol 74 (2) ◽  
pp. 207-217 ◽  
Author(s):  
Krystel R. Huxlin ◽  
Ann Jervie Sefton ◽  
Mark Schulz ◽  
Max R. Bennett

1990 ◽  
Vol 4 (4) ◽  
pp. 313-329 ◽  
Author(s):  
J. Peter ◽  
A. Yhip ◽  
Michael A. Kirby

AbstractThe topographic order of the retinocollicular projection in the rat was examined from birth until maturity. Small, localized deposits of rhodamine-filled latex microspheres were placed into the superior colliculus at different locations. To minimize labeling fibers of passage deposit sites were typically, although not exclusively, placed into the caudal-lateral pole of the colliculus. Examination of the area and density of labeled cells in the retinae of these animals led to the following conclusions: (1) At each age examined, the location of the majority of labeled cells was observed to be in appropriate topographic register with the deposit site in the superior colliculus. (2) Confirming the work of previous investigators, errors in topographic projection were observed. These were present in both the contralateral and ipsilateral retinae and decreased with increasing postnatal age. The mature pattern was present by P10. (3) Quantitatively, the number of retinal ganglion cells terminating nontopographically within the colliculus constituted a relatively minor proportion of the total number of labeled cells in both retinae. It is concluded that the majority of the retinal ganglion cells make topographically appropriate terminations within the superior colliculus during development.


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