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 …

Colour vision allows animals to reliably distinguish differences in the distributions of spectral
energies reaching the eye. Although not universal, a capacity for colour vision is sufficiently …

Inferences about mechanisms at one particular stage of a visual pathway may be made from
psychophysical thresholds only if the noise at the stage in question dominates that in the …

This book provides the reader with an account of some of the experimental evidence on
which our present knowledge is based. The third edition of this highly successful book has …

All mammalian retinae contain rod photoreceptors for low‐light vision and cone
photoreceptors for daylight and color vision. Most nonprimate mammals have dichromatic …

All the information available to the brain for the interpretation of the visual scene comes from
the number of photons absorbed by a very limited number of photoreceptor types which are …

The spectral sensitivity of 15 species of birds has been measured by recording transretinal
voltages from opened eyecups. With suitable combinations of colored adapting lights, we …

The spectral sensitivities of individually stimulated ommatidia in the compound eye of
Daphnia magna were measured using a fast spectral scan voltage-clamp technique with …

The visual ecology of six closely related species of Puerto Rican anoline lizards was
investigated and they were found to occupy four distinct habitat types in terms of light …

Squirrel monkeys (Saimiri sciureus) have a striking color-vision polymorphism; each animal
has one of six different types of color vision. These arise from individual variation in the …