The Evolution and Physiology of Human Color Vision

The Physiology of Color Vision

6.3 Intermediate retinal neurons 230 6.3.1 Horizontal cells and bipolar cells 230 6.3.1.1 Connections to cones 230 6.3.1.2 Functional organization 230 6.3.1.3 Amacrine cells 231 6.4 Ganglion cells and LGN cells 231 6.4.1 Structural issues 232 6.4.2 Function organization 232 6.4.2.1 Receptive field organization 233 6.4.2.2 Contrast sensitivity 234 6.4.3 Chromatic properties 234 6.4.3.1 Chromatic...

The Evolution and Physiology of Human Color Vision Insights from Molecular Genetic Studies of Visual Pigments

Present-day vertebrates vary enormously in the sophistication of their color vision, the density and spatial distribution of cone classes, and the number and absorption maxima of their cone pigments At one extreme, most mammals have only three pigments: the two ancestral cone pigments and rhodopsin. Baltimore, Maryland 21205 At the other evolutionary extreme, chickens possess six Nothing in bio...

formation and evolution of regional organizations: the case study of the economic cooperation organization (eco)

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...

Evolution of color vision.

Color vision is achieved by comparing the inputs from retinal photoreceptor neurons that differ in their wavelength sensitivity. Recent studies have elucidated the distribution and phylogeny of opsins, the family of light-sensitive molecules involved in this process. Interesting new findings suggest that animals have evolved a strategy to achieve specific sensitivity through the mutually exclus...

The Physiology of Human Vision