Daylight vision relies on high sensitivity to subtle changes in the spatial pattern, contrast and chromaticity of light inputs. Noise in the responses of cone photoreceptors places a fundamental limit ...

Human skin is constantly exposed to solar ultraviolet radiation (UVR), the most prevalent environmental carcinogen. Humans have the unique ability among mammals to respond to UVR by increasing their ...

Drosophila phototransduction has served as a model system for elucidating the molecular basis of sensory signal processing. In the fruitfly’s photoreceptors, light is captured by rhodopsin and ...

Molecular mechanisms of verebrate photoreceptor light adaptation. The human visual system can discriminate increment and decrement light stimuli over a wide range of ambient illumination; from ...