Kinesiology 1080A/B Lecture Notes - Frontal Lobe
20 Oct 2013
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Hemmorrhagic stroke: rupture of arterial wall leading to bleeding within the brain, blood very toxic to neurons, wall becomes thin. Ischemic stroke: blockage of artery to or within the brain, lack of oxygen (anoxia) leads to neural death. Movement can be directly produced only by a very specific region of the cortex hitzit and. Fritch - found very specific part of brain, which controls twitch/movement. Jackson - systematically examined his wife, who had an epileptic seizure found systematic pattern (from hands to face) Penfield was systematic surgeon systematically mapped the brain to see what controls what. Motor cortex elicits simple movements (a twitch) in response to mild electrical stimulation. Found primary motor cortex was specifically organized homunculus. Organized as a location of a body! Designed optimally for communication of sensory and motor movement. Cortical magnification for neurons for hand movements - hands do more complicated tasks than toes. Takes information and conveys it to lower areas.
