PSYA01H3 Lecture Notes - Lecture 9: Occipital Lobe, Visual Cortex, Agnosia
Document Summary
Back of the brain that is devoted to vision. Middle of occipital lobe is where the signal from the eyes comes. The signals from your eyes is a bunch of light patterns what our eyes pick up is light. We pick up different frequency of light colour. In the primary part of the lobe, its dealing with light, frequency of light, and contours and edges: very raw visual stimulation. If da(cid:373)age to that part of (cid:271)rai(cid:374), (cid:455)ou"ll ha(cid:448)e a pro(cid:271)le(cid:373) seei(cid:374)g (cid:894)(cid:271)li(cid:374)d(cid:374)ess(cid:895: scitoma produ(cid:272)es a hole i(cid:374) a perso(cid:374)"s (cid:448)isual field (your eyes screen) Light comes and lands on a specific place on retina of your eye so anything that falls on that part of the retina you will not see it) If you damage area around primary visual cortex, damage leads to agnosia: ag(cid:374)osia so(cid:373)ethi(cid:374)g off (cid:449)ith this perso(cid:374)"s (cid:448)isual re(cid:272)og(cid:374)itio(cid:374) s(cid:455)ste(cid:373), failure to know something, physical agnosia failure to know something by sight.
