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 …

Nayuta Yamashita is an assistant professor in the Department of Cell and Neurobiology in
the Keck School of Medicine at the University of Southern California. Her research interests …

Most modern mammals, including strictly diurnal species, exhibit sensory adaptations to
nocturnal activity that are thought to be the result of a prolonged nocturnal phase or …

Thirty years ago virtually everything known about primate color vision derived from
psychophysical studies of normal and color-defective humans and from physiological …

Primates have X chromosome genes for cone photopigments with sensitivity maxima from
535 to 562 nm. Old World monkeys and apes (catarrhines) and the New World (platyrrhine) …

Most vertebrate groups exhibit eye shapes that vary predictably with activity pattern.
Nocturnal vertebrates typically have large corneas relative to eye size as an adaptation for …

Evidence from the early paleontological record of mammalian evolution has often been
interpreted as supporting the idea that mammals were nocturnal for most of their early …

Diurnal light-dark cycle resets the master clock, while timed food intake is another potent
synchronizer of peripheral clocks in mammals. As the largest metabolic organ, the liver …

Current theories in extended mind suggest that cognition is the result of an integrative
process involving brain, body, and environment. The relationships between inner and outer …

Survival and reproductive success hinge on the perception of environmental stimuli. In this
regard, foraging efficiency depends on discerning predictive signals in food. A widespread …