PSYC 1000 Lecture Notes - Lecture 7: Visual Cortex, Lateral Geniculate Nucleus, Cortical Blindness

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Dan Meegan

Document Summary

Several parallel pathways (streams: parallel: each stream does its processing independently and simultaneously. Each stream is hierarchically-organized: hierarchy: each stage in the stream does its processing before sending to next stage. From eye to brain: retina split in two. Nasal inner half: everything that happens on the left side of the outside world is processed by the right half of the brain. Things that hit the temporal half of the left eye hit the nasal half of the right eye: thalamocortical -> through the thalamus to the cortex. Thalamocortical pathway: eye (retina) , thalamus (lateral geniculate nucleus) , cortex (primary visual cortex, hierarchical: each successive stage does more advanced processing of info received from preceding stage. Cortical blindness: loss of conscious vision following damage to visual cortex, patient feels completely blind. He(cid:859)s (cid:373)issi(cid:374)g his pri(cid:373)ar(cid:455) (cid:448)isual (cid:272)orte(cid:454), a(cid:374)d he feels (cid:271)li(cid:374)d. Whe(cid:374) gi(cid:448)e(cid:374) a (cid:858)for(cid:272)ed (cid:272)hoi(cid:272)e(cid:859) situatio(cid:374), he feels like he(cid:859)s guessi(cid:374)g, ho(cid:449)e(cid:448)er his perfor(cid:373)a(cid:374)(cid:272)e suggests other(cid:449)ise .