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A rare type of ganglion cell in mammalian retina is directly photosensitive. These novel retinal photoreceptors express the… Expand Human vision starts with the activation of rod photoreceptors in dim light and short (S)-, medium (M)-, and long (L)- wavelength… Expand Light synchronizes mammalian circadian rhythms with environmental time by modulating retinal input to the circadian pacemaker—the… Expand The primary circadian pacemaker, in the suprachiasmatic nucleus (SCN) of the mammalian brain, is photoentrained by light signals… Expand The signaling mechanisms that control the survival of CNS neurons are poorly understood. Here we show that, in contrast to PNS… Expand Using quantitative anatomical techniques, we show that after intraorbital optic nerve transection in adult rats, virtually all… Expand The development of orderly connections in the mammalian visual system depends on action potentials in the optic nerve fibers… Expand We measured the number and size of retinal ganglion cells from six human eyes with glaucoma. In each, the histologic findings… Expand 1. Spatial summation within cat retinal receptive fields was studied by recording from optic‐tract fibres the responses of… Expand Abstract The concept of superposition has been found to be a useful and powerful one to apply to retinal function. It… Expand