Corpus callosum o occipital lobe visual area of the

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corpus callosum ) o Occipital lobe – visual area of the brain o Temporal lobe – sounds and smells are processed o Parietal lobe – touch and taste are processed o Frontal lobe – behavior motor plans are processed as well as complicated processes Frontal lob contains primary motor cortex – in charge of voluntary movements o Each various body part has a unique portion of primary motor cortex devoted to it o Broca’s area – left side of brain, implicated in language production PET scan – records metabolic activity in brain by detecting amount of radioactive substances o Lets us see how much a person uses a particular part of the brain fMRI – measures changes in the levels of naturally occurring oxygen in the blood o Brain regions require more oxygen as it becomes active o Measures brain activity based on increase oxygen level Temporal resolution – cannot tell us exactly when brain activity occurred, includes PET and fMRI o Takes several seconds for blood to arrive at a portion of the brain working on a task EEG – measured electrical brain activity instead of blood flow, for timing of activation o Electrodes are placed on scalp and nearly instantaneously pick up electrical activity o Poor spatial resolution – not accurate w/ regards to specific location Diffuse Optical Imaging (DOI) – offers high temporal and spatial resolution o Shine IR light into brain – light properties change as they pass thru oxygenated blood & thru neurons
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Hormones & Behavior Hormones do NOT cause behavioral changes o Influence (1) input systems – sensory (2) integrators – CNS (3) output systems – effectors (muscle)
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  • Spring '08
  • YOUNG
  • Psychology, temporal lobe, primary motor cortex

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