PSYB65H3 Lecture Notes - Pia Mater, Subarachnoid Space, Anterior Cerebral Artery
Document Summary
Hemispheres are connected by a large fibre pathway called corpus collosum. Connections are not random, specific portions connect directly to opposite location on other hemisphere. 4 major lobes: frontal, temporal, occipital and parietal frontal: motor and planning, etc. parietal: sensory temporal: hearing occipital: vision each lobe has primary cortex and association/secondary cortex. Association areas are often (always?) larger than primary areas. The higher the proportion of association to primary cortex, the more evolved is the species frontal lobe- brodman"s areas 4 and 6. Primary motor strip is the precentral gyrus right in front of central sulcus primary function is motor movement and control. Also involved in planning, inhibition of inappropriate behaviours, visceral sensations parietal lobe- brodman"s areas 3, 1 and 2. Begins at central sulcus and goes posterior until it hits occipital lobe. Primary cortex in post-central gyrus, just behind central sulcus. Primary visual receptive area (area 17) is where the info from eyes enters.
