GANGLION-CELL PATHWAYS FOR ROD VISION

Citation
P. Lennie et Md. Fairchild, GANGLION-CELL PATHWAYS FOR ROD VISION, Vision research, 34(4), 1994, pp. 477-482
Citations number
25
Categorie Soggetti
Neurosciences,Ophthalmology
Journal title
ISSN journal
00426989
Volume
34
Issue
4
Year of publication
1994
Pages
477 - 482
Database
ISI
SICI code
0042-6989(1994)34:4<477:GPFRV>2.0.ZU;2-1
Abstract
Measurements of the acuity of rod vision made by two different techniq ues show it to vary only slightly with eccentricity. At eccentricities beyond 15 deg acuity is well predicted from the sampling properties o f the mosaic of the P-class of ganglion cells. With decreasing eccentr icity acuity falls progressively below the sampling limit of P-cells, but even at the lowest eccentricity examined (5 deg) does not reach th e limit imposed by the sampling properties of the mosaic of M-cells. A t an eccentricity of 5 deg rod vision could be supported by as few as 20% of P-cells.