PSYCH-AD 101 Lecture Notes - Lecture 4: Postcentral Gyrus, Auditory Cortex, Prefrontal Cortex
17 Sep 2016
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Psych ua-25 - lecture 4 - brain mapping & lesion techniques. Brodmann"s map 1909: cytoarchitectonic; 52 areas, based on cell morphology, density, and layering different structure = different function used widely to locate irregularities (ex. tumor in brodmann"s 46) Circuitry staining techniques track tracing; schematic diagrams > patterns paths diverge (parietal to dorsal; temporal to ventral) different purposes parietal: where temporal: what . Primary visual cortex: organized in a retinotopic manner; Tissue in occipital lobe has a map-like structure that corresponds to how your retina is laid out. Injected glucose into bloodstream (radioactively labelled); more blood ows to areas that are more active; radioactive tags to active areas. Developed brain like a photograph; map of retina reproduced in brain. Portions of tissue are organized similar to how the retina is laid out** important organizing principle. Organized in a map of frequency; low to high frequencies. Organization related in primary motor and somatosensory cortex.
