PSYB65H3 Lecture Notes - Lecture 2: Postcentral Gyrus, Occipital Lobe, Parietal Lobe
Document Summary
Not smooth unlike in other species => evolutionary pressure to fit more cells. From the top view hemispheres appear divided. => input from the left side goes to the right cortex, input from the right side goes to the left cortex. Hemispheres connected by corpus callosum => broad fiber pathway. => fibers from left connected to analogous portions on the right across the corpus callosum. Gyri: bumps in the cortex of the brain. Central sulcus/fissure separates frontal and parietal lobes. Subdivided into 4 lobes: frontal, parietal, occipital, temporal. Each lobe has a primary cortex and associational cortex. Primary cortex is primary receptive area => receives input for the lobe. Associational cortex located near the primary cortex => computing power of the brain; processes information. => higher order processing, newest in terms of evolution. => in further evolved animals there"s a greater percentage of association cortex relative to primary cortex. => know numbers for the primary cortex of each lobe.
