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PSYB65- Lecture 2.docx

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Ted Petit

PSYB65 LectureCorpus collosum is the pathway that connects the two hemispheres of the brain and allowing them to communicate with each otherCentral sulcus is a very prominent grooveSylvian or lateral fissure is the large fissure on the sideEach lobe has some major function also each lobe has two different kinds of cortextissue primary cortex and associational cortex primary cortex is the area of the cortex that deals with the primary thing that lobe does primary cortex is where the information comes to directly and is relatively small primary is surrounded by tissue that processes it which is referred to as the associational cortex performs the higher order functions associational cortex is newer in terms of evolution and the more highly evolved and intelligent animals have more associational cortex Brodmann mapped the cerebral cortex of the human and put numbers on the areas Frontal lobe begins at the very anterior portion of the brain and continues backward until it hits and ends at the central sulcus mostly involved in motor movement functions output also involves planning knowing whats appropriate and how to get where you want to go in humans precentral gyrus is the primary motor strip and everything else is associational areas 4 and 6 information is sent out through the primary motor strip after the consulting is done by the associational cortex primary motor strip has a homunculus little man Parietal lobe starts just posterior to the central sulcus and moves backward responsible for sensations from the body somatosensory input not
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