PSYB51H3 Study Guide - Retina
Document Summary
Short answer question (sample) on info learned from last lecture. Functions of these 2 pathways: lateral pathway: it"s serving for lateral inhibition. Lateral inhibition increases the contrast and sharpness in visual response. This phenomenon occurs in the mammalian retina, for example. In the dark, a small light stimulus will be enhanced by the different photoreceptors (rod cells). The rods in the center of the stimulus will transduce the light signal to the brain, whereas different rods on the outside of the stimulus will send a dark signal to the brain. This contrast between the light and dark creates a sharper image. This mechanism also creates the mach band visual effect. Out of the eye into the brain: in which imp. way does the retinal info. processing differ from that of a usual computer? the retina does a whole bunch of processes at the same time. While the computer processes one thing at a time [although it does it fast]
