PSYC 105 Study Guide - Midterm Guide: Word Lists By Frequency, Inferior Temporal Gyrus, Simple Features
Document Summary
Visual system: photoreceptors: rods and cones. Rods: sensitive in low light, lower acuity, color blind, periphery of the retina. Cones: need more light, higher acuity, color sensitive, in the fovea: pathway from light to perception. Series of neurons communicate information from the retina to the cortex. Photoreceptors process light waves and information travels to bipolar cells, then to the ganglion cells. Ga(cid:374)glio(cid:374) (cid:272)ells" a(cid:454)o(cid:374)s (cid:272)reate a (cid:271)u(cid:374)dle of a(cid:454)o(cid:374)s, or the opti(cid:272) (cid:374)er(cid:448)e, (cid:449)here the i(cid:374)formation leaves the back of the eye to travel to the brain. Information goes to lateral geniculate nucleus (lgn) in the thalamus, then goes to v1 in the visual cortex (primary visual projection area) in the occipital lobe: lateral inhibition. System visual cells use to perceive edges. Ganglion cells that fire also inhibit its neighboring cells. Creates distinction at edges or stimulus; edges in color brightness perceived differently: receptive fields. Size and shape of the area in the visual world to which a cell responds.
