PSYC51H3 Lecture Notes - Lecture 2: Transmissometer, Scotoma, Color Blindness
Document Summary
Lecture 2 colour and primary visual cortex. The optic radiations carry information from the lgn to the primary visual cortex. The optic nerve carries info from retina, cross oc and leaving are ors that carry info to visual cortex. Sometimes referred to as striate cortex (based on striped/layered appearance), or area 17 (cid:894)(cid:271)ased o(cid:374) b(cid:396)od(cid:373)a(cid:374)(cid:374)(cid:859)s (cid:894)su(cid:271)di(cid:448)ided (cid:271)(cid:396)ai(cid:374) i(cid:374)to se(cid:448)e(cid:396)al (cid:396)egio(cid:374)s(cid:895) (cid:374)u(cid:373)(cid:271)e(cid:396)i(cid:374)g s(cid:272)he(cid:373)e(cid:895) Input from lgn received in layer 4calpha (magnocellular layers of lgn) & 4cbeta (parvocellular layers of lgn) Layer 4cbeta projects to layers 2 and 3. Blob and interblob regions of layers 2 and 3 continuation of parvocellular pathway. Layer 4b, blobs, and interblobs project to anatomically distinguishable regions of v2, and the functional specialization also seems preserved in higher-order extrastriate regions (e. g. mt, v4) Diagram of functional segregation in primate visual system. Starting from the eye rgc lgn with 6 layers project into regions of 4ca or 4cb. Anatomical segregation is preserved even further in.
