NROB60H3 Lecture Notes - Lecture 4: Neurofibrillary Tangle, Dopaminergic, Acetylcholine
13 Dec 2016
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Primary motor cortex: precentral gyrus: movement contralaterally. Primary sensory cortex: postcentral gyrus: sensation. Association area: most of cerebral cortex, higher order processes. 17, 18, 19 occipital lobe (visual areas) 3,2,1 somatic sensory area (parietal lobe) Cover most of cerebral hemisphere, 6 layers. Regional differences in neocortex: differences in layers between different cortexes (motor vs visual) Different size of layers depending on function of region. Sensory and motor homunculus topographicall organized according to sensitivity. Heteromodal integrated functions from multiple sensory/motor areas http://www. learner. org/resources/seri es142. html. Two types cells in brain (glia and neurons: mostly glia. Neuron doctrine: separate neurons and cells that are structurally, metabolically, and functionally independent, info transmits from cell to cell across tiny gaps (synapse) Dendrite spines (outgrowth: changed based on life experiences. More mushroom spine = more synapse interaction. Development effect branches and so can disorders. Hormones effect number of branches and so can environment. Axon hillocks: leave cell body (very excitable)
