... how they use vision in the context of their behavioral ecology. In this paper, we measured the number and topographic distribution of neurons (rods, cones and retinal ganglion cells) and estimated the spatial resolving power of the eye of the diurnal, forest-dwelling Ansorge's cusimanse (Crossarchus...

... no retractile myoid is present, a distinct synaptic region contains synaptic vesicles. Based on the continuity of the plasma membrane surrounding the disordered discs, which emanate from a centrally positioned connecting cilium, the photoreceptors were considered to be rods by Holmberg [1971], but this requires...

... monkey, Alouatta caraya were compared. Although retinal area varies by over a factor of two in these monkeys, the area of the fovea does not covary with retinal area and remains approximately the same absolute size, as measured by the dimensions of the high density region of cones, or the rod-free region...

... ganglion cell populations, three layers of horizontal cells and three photoreceptor types. In contrast to petromyzontids that contain only two photoreceptor types (short and long), G. australis possesses one rod-like (R1) and two cone-like (C1 and C2) photoreceptors. Although the rod-like receptor in G...

... retina with ungrouped rod-like photoreceptors overlying a retinal tapetum; a region of high ganglion cell density ( area centralis of 56.1×10 3 cells per mm 2 ) in the centrolateral region of the main retina; a centrotemporal region of the main retina with grouped rod-like photoreceptors; a region (area...