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Ted Petit (310)

Lec 2

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University of Toronto Scarborough
Ted Petit

PSYB65H3 Lecture 2 (Sept 20, 2010) Slide 1 Through evolution, we have added more and more complex processesto our brain Territoriality We maintain the same behaviours but more complicated Todays Lecture: Cerebral Cortex in Detail vascular supply of the cerebral cortex, meninges Cerebral Cortex Not smooth unlike other species where the cortex is very smooth, the human brain tries to add on cells (evolutionary pressure to make humans smarter organisms) Mountains and Valleys (the bumps) tells us where and what the functions are Valley Sulci, Sulcus Mountain Gyri, Gulci Two hemispheres brain is separated and connected by a fiber pathway Right Hemisphere controls the left hand side of the body; gets information from the left hand side of the body Left Hemisphere controls the right hand side of the body Majority of the time, brain gets information from the environment and sends to cortex where it takes information and decides on functions Corpus Callosum fibers that connects the left hemisphere with the right hemisphere (connections analogous portions of the brain) Fibers run across the two hemispheres; allows communication Slide 2 Three main sulci: Fissures when the sulci are really big Longitudinal Fissures separates the left hemisphere from the right hemisphere (down the center) Central Sulcus (Central Fissure) separates anterior and posterior of the brain; separates frontal and parietal lobe Sylvian Fissure (Lateral Fissure) separates the lobes Lobes 4 lobes that have different structures and functions ; each lobe takes care of some individual function Frontal Lobe in the front Parietal Lobe behind central sulcus Occipital Lobe at the very back of head; function in vision Temporal Lobe underneath the sylvian fissure Within each lobe, theres always a primary cortex which deals with some primary function (major function) and association cortex
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