1. An oft-cited view, derived principally from the writings of Gordon L. Walls, is that relatively
few mammalian species have a capacity for colour vision. This review has evaluated that …

Dramatic improvement of our understanding of the genetic basis of vision was brought by
the molecular characterization of the bovine rhodopsin gene and the human rhodopsin and …

Primates are apparently unique amongst the mammals in possessing trichromatic colour
vision. However, not all primates are trichromatic. Amongst the haplorhine (higher) primates …

Colour fascinates all of us, and scientists and philosophers have sought to understand the
true nature of colour vision for many years. In recent times, investigations into colour vision …

Variations in the absorption spectra of cone photopigments over the spectral range of about
530 to 562 nanometers are a principal cause of individual differences in human color vision …

Trichromatic colour vision is of considerable importance to primates but is absent in other
eutherian mammals. Primate colour vision is traditionally believed to have evolved for …

The expression of five major families of visual pigments occurred early in vertebrae
evolution, probably about 350-400 million years ago, before the separation of the major …

The past 15 years have brought much progress in our understanding of several basic
features of primate color vision. There has been particular success in cataloging the spectral …

The owl monkey (Aotus trivirgatus) is the only nocturnal monkey. The photopigments ofAotus
and the relationship between these photopigments and visual discrimination were examined …

The evolution of trichromatic colour vision by the majority of anthropoid primates has been
linked to the efficient detection and selection of food, particularly ripe fruits among leaves in …