ANTHR-140 Lecture Notes - Lecture 12: Color Vision, Biological Anthropology, Rhinarium
23 Sep 2020
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Document Summary
Primates are characterized by larger brains relative to their body mass. Characterized by reduced reliance on olfaction (smell), increased reliance on vision. Color vision, depth perception, large more complex brain. Vision is the detection of light waves via sensory cells in the back of the eye signals are then sent to the brain and interpreted into images. The size of the olfactory bulbs (cn i) is correlated with reliance on olfaction. The ancestral traits include a rhinarium: wet fleshy pad connecting the nose to the upper lip. Cones: several types of cones detect different wave spectrum (color) Require a large amount of light to operate. Color vision in primates is a derived trait. Forest levels: different primates use different levels within a forest, occupying different niches. Anthropoids (human resembling): new world monkeys, old world monkeys, Strepsirrhini (turning inward nose): lemurs and lorises. Lower 4 incisors and canines elongated and tightly bunched into a projecting comb" of teeth.
