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- Title
Retinal Ganglion Cell Topography and Retinal Resolution in the Baikal Seal (Pusa sibirica).
- Authors
Mass, Alla M.; Supin, Alexander Y.
- Abstract
The total number, size, topographic distribution, and cell density of ganglion cells were studied in retinal wholemounts of Baikal seals (Pusa sibirica) . The ganglion cell size varied from 10 to 38 μm. A distinct cell group consisted of large ganglion cells of more than 30 μm in diameter. The topographic distribution of ganglion cells showed a definite area of high cell density similar to the area centralis of terrestrial carnivores. This area was located approximately 6-7 mm dorsotemporally of the geometric center of the wholemount. In this area, the peak cell densities in two wholemounts were 3,800 and 3,400 cells/mm 2 (mean 3,600 cells/ mm2 ). With a posterior nodal distance of 24 mm (underwater), this density corresponds to 631 cells/square degree. These values predict a retinal resolution of 2.4' in water and 3.0' in air. The topographic distribution of large cells featured the highest density in the same location as the total ganglion cell population.
- Subjects
GANGLIONIC blocking agents; SEAL behavior; BAIKAL seal; REGENERATION (Biology); CELL culture
- Publication
Brain, Behavior & Evolution, 2016, Vol 88, Issue 1, p59
- ISSN
0006-8977
- Publication type
Article
- DOI
10.1159/000447735