Kinesiology 1080A/B Lecture Notes - Lecture 5: Stroke, Central Sulcus, Dysmelia

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 1080A/B
• Professor: Matthew Heath

Document Summary

Hemorrhagic stroke: rupture of arterial wall leading to bleeding within the brain, blood is very toxic to neurons. Ischemic stroke: blockage of artery to or within the brain, lack of oxygen (anoxia) leads to neuronal death. Dark area on an mri is the legion because neurons all died. Localized legions may impair very specific types of cognitive and cognitive motor functions. Need to know where the m1 is and where the central sulcus. Central sulcus dived the brain to the m1 (infront) and s1 (behind) 50% of the projections that go into spinal cord for movement originate from m1. Movement can be directly produced only by a very specific region of the cortex- the motor cortex. They exposed the motor cortex of a dog and by touching it with an electrode would cause a twitching movement in a certain body part and this is how they figured out the homunculus.