PSYCH 1XX3 Lecture : February 11, 2013
4 Feb 2014
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Sensation: stimuli to nerve impulse: all images are upside down on retina, they are then encoded into neural impulses, then, brain must orient the impulses so they are right side up, there is great plasticity to having the orientation on the retina in a specific way, blurry glasses example, after some time, you will adjust to the glasses and be able to perform normally. How: primary visual pathway (primary geniculo striate pathway) retina to optic tract to lgn to visual cortex there is a secondary pathway engaged when visual stimuli come through eyes, secondary pathway make stops along superior colliculus, his eyes are functional yet because there is extensive damage in primary visual cortex he cannot see, retino tectal pathway: however there is nothing wrong with the secondary visual pathway it is maintained (retina optic tract sc pulvinar extrastriate cortex)
