PSY 252 Lecture Notes - Lecture 7: Illusory Contours, Retinotopy, Superior Colliculus
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Geniculostriate pathway (new: eye lateral geniculate nucleus (thalamus) striate visual area (primary visual cortex or v1, not sho(cid:449)(cid:374) i(cid:374) lo(cid:449)e(cid:396) a(cid:374)i(cid:373)als so (cid:373)ust(cid:859)(cid:448)e de(cid:448)eloped late(cid:396) i(cid:374) e(cid:448)olutio(cid:374). De(cid:448)eloped afte(cid:396) birth in humans: 90% of visual inputs go through this pathway. I see isee) helps with understanding which eye information goes where c- contralateral i ipsilateral. Tested stimuli on cats to see how cells in v1 responded to light and saw that they were responding to edges: When light is in the right position on the screen and on the on position it will fire, if you move the light to the off region, it (cid:449)o(cid:374)(cid:859)t fire the same. Fires a lot to a specific orientation but if it(cid:859)s not in that location it might fire but just not as much. This cell prefers vertical a(cid:374)d the fu(cid:396)the(cid:396) (cid:455)ou (cid:373)o(cid:448)e it the less a(cid:374)d less it (cid:449)ill fi(cid:396)e u(cid:374)til it does(cid:374)(cid:859)t fire at all.
