Feature Detection and Parallel Processing PDF

Side closest to your nosa side closest to your temple pointweaIs Feature Detection and Parallel Processing Feature Detection: When looking at an object, you need to break it down into its component features to make sense of what you are looking at. There are 3 things to consider when looking...

Side closest to your nosa side closest to your temple pointweaIs Feature Detection and Parallel Processing Feature Detection: When looking at an object, you need to break it down into its component features to make sense of what you are looking at. There are 3 things to consider when looking at any object: color, form, and motion. o Color: § Cones § Trichromatic theory of color vision, three types of cones. • RED (60%), GREEN (30%), BLUE (10%). • Remember, red objects reflect red, green objects reflect green, and blue objects reflect blue. § If object reflects red à red light hits red cone à fire axon potential à brain is like OH RED!! ), o Form: We need to figure out boundaries of the object and shape of the object. § Parvocellular pathway: good at spatial resolution (boundaries and shape—high levels of details), and color. But poor temporal (can’t detect temporal-motion motion—only stationary.) gooddetails when still in § Cones responsible § Acronym: Pink Pyramid (a type of “form”/”shape”) = Parvocellular pathway o Motion: § Magnocellular pathway: has high temporal resolution (think time, would look motion) resolution [encodes motion]. But has poor spatial resolution; no if still. blurry color). Rods responsible. § Acronym: Motion = Magnocellular pathway • Parallel Processing: detect/focus all information (color, form, motion) at same time. • color 26