PSY290H5 Lecture 5: Somatosensory System
Document Summary
Eagle : conceive 20ft while we can conceive at 2 ft. Humans are limited to colors and wavelength. Our perception is limited to the mechanism we have vision is the most dominant system we have. 380-760 nm ~400 nm ( the colors we see) Most mammals aside from humans and some primates have two different types of cones : limits ability to see color and spectrum . Pigeons and birds have more than 3 cones. Bats hunt with sound produce high pitched squeal and then listen for echoes bouncing back segregating info color. There are differences in what animals and humans hear limit of frequency that humans can perceive is about 10,000 cats a range of 100,000 that we cannot here. Elephants can hear sounds below our range. What we perceive is limited by the sensory mechanism we have our body is equipped with receptors. History: our sense of touch is a product of sensory receptors in skin.
