Psychology 2220A/B Lecture Notes - Lecture 4: Medial Geniculate Nucleus, Visual Cortex, Basal Ganglia

• School: Western University
• Department: Psychology
• Course: Psychology 2220A/B
• Professor: Jody Culham

Document Summary

Hindbrain: cerebellum - 2 hemispheres, vermis, ne motor control. More of a role in cognitive functions than previously thought (attention) Folds = more grey matter, more neurons & more/shorter connections. More cells ,", heavy duty info processing. Reticular formation - reticular activating system (arousal/sleep) Pons - relay b/t cerebellum & cerebrum (consciousness) Cerebrum = outermost portion of forebrain; 2 hemispheres (grey & white matter) Gyri (outward curves - convexity) & sulci (inward curves - concavity) Interhemispheric ssure = huge deep cut divides one hemisphere from the other. Sylvian ssure = huge deep horizontal cut; insula buried in it. Separates temporal lobe from parietal & frontal lobe. Central sulcus: divides frontal lobe from parietal lobe. Cerebral cortex = crumpled piece of paper (3 mm thick, 1600cm^2, 18"" pizza) Different layers have different types of connections w other brain areas. Some layers have greater density of cell bodies. Layer 4 = sensory input (sensory thicker)