Distribution of M retinal ganglion cells in diurnal and nocturnal new world monkeys
Distribution of M retinal ganglion cells in diurnal and nocturnal new world monkeys
The topography of M ganglion cell distribution was studied in the retinae of two New World monkey species, the diurnal capuchin monkey Cebus apella and the nocturnal owl monkey Aotus azarae. Retinal whole mounts were stained by the neurofibrillar method of Gros-Schultze. As occurs with other diurnal primates, the Cebus M-ganglion cell density peaks in the foveal slope and declines towards the periphery. In the Aotus retina, the M ganglion cell density peaks in the area centralis and declines toward the periphery. In both species the cell density in the temporal, dorsal, and ventral meridians are similar for equivalent eccentricities. The cell density in the nasal meridian is higher than in the other meridians. The naso-temporal density ratio ranges between 1.2 and 4.3 in the Cebus and 1.6 and 2.2 in the Aotus. The total number of M-ganglion cells was 140,300 and 74,000 in the Cebus and Aotus retinae, respectively, corresponding to about 10% and 15.4% of the total retinal ganglion cell population in these species. The results indicate that M ganglion cells are similarly organized in both diurnal and nocturnal simians, but may be proportionally more important for the nocturnal species.
capuchin monkey, neurofibrillar stain, owl monkey, parallel processing, vision
538-552
Lima, Silene M.A.
4201cb1d-ee63-4d8d-a9d4-2622a90624b4
Silveira, Luiz Carlos L.
c0599953-6274-4a41-8f97-d6b37634581a
Perry, V. Hugh
8f29d36a-8e1f-4082-8700-09483bbaeae4
1996
Lima, Silene M.A.
4201cb1d-ee63-4d8d-a9d4-2622a90624b4
Silveira, Luiz Carlos L.
c0599953-6274-4a41-8f97-d6b37634581a
Perry, V. Hugh
8f29d36a-8e1f-4082-8700-09483bbaeae4
Abstract
The topography of M ganglion cell distribution was studied in the retinae of two New World monkey species, the diurnal capuchin monkey Cebus apella and the nocturnal owl monkey Aotus azarae. Retinal whole mounts were stained by the neurofibrillar method of Gros-Schultze. As occurs with other diurnal primates, the Cebus M-ganglion cell density peaks in the foveal slope and declines towards the periphery. In the Aotus retina, the M ganglion cell density peaks in the area centralis and declines toward the periphery. In both species the cell density in the temporal, dorsal, and ventral meridians are similar for equivalent eccentricities. The cell density in the nasal meridian is higher than in the other meridians. The naso-temporal density ratio ranges between 1.2 and 4.3 in the Cebus and 1.6 and 2.2 in the Aotus. The total number of M-ganglion cells was 140,300 and 74,000 in the Cebus and Aotus retinae, respectively, corresponding to about 10% and 15.4% of the total retinal ganglion cell population in these species. The results indicate that M ganglion cells are similarly organized in both diurnal and nocturnal simians, but may be proportionally more important for the nocturnal species.
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Published date: 1996
Keywords:
capuchin monkey, neurofibrillar stain, owl monkey, parallel processing, vision
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Local EPrints ID: 490128
URI: http://eprints.soton.ac.uk/id/eprint/490128
ISSN: 0021-9967
PURE UUID: 83697362-4657-4c36-84d7-e7786c544c50
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Date deposited: 15 May 2024 16:33
Last modified: 05 Jun 2024 18:38
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Author:
Silene M.A. Lima
Author:
Luiz Carlos L. Silveira
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