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Organization of the BrainWhat is the brain ?- Part of nervous system found in skull- Surrounded and supported by salty fluid (CSF)What does the brain do?- EVERYTHINGHow is the brain studied? 1. Case Study: Natural Experiment2. Lesion: Experimental disruption of brain3. Stimulation: Experimental activation of brain. Penfield Studies4. Brain Recordings: Electrodes measure activity5. Imaging Techniques- CAT: Computerized Axial Tomography- PET SCAN: Positron Emission Tomography- MRI: Magnetic Resonance ImagingHow is the Brain Organized?1. Forebrain: Largest Part; Complex Processing2. Midbrain: Relays for sight and vision3. Hindbrain: Control of Vital Functions, sleep, wakefulness, attention, motorco-ordinationThe Cerebral Cortex- outer surface of cerebrum- Convoluted- contains 75% of our neurons- divided into two symmetrical hemispheres- each hemisphere controls opposite side of bodyHow is the cortex organized?- divided into 4 lobes, based on gyri( ridges) and sulci( valleys)1. FRONTAL: in front of central Sulcus2. PARIETAL: behind central sulcus; above sylvian fissure3. OCCIPITAL: Back of Head4. TEMPORAL: Under Sylvian


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Mizzou PSYCH 1000H - Brain

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