Psychology 2030A/B Lecture Notes - Lecture 3: Informed Consent, Blind Experiment, Ethnocentrism

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Neuroimaging: pictures of the brain: allows for a window on brain structure and function; structure as in size and function as in activity. Imaging brain structure: computerized axial tomography (cat or ct scan) Cat- x-rays of the brain; pictures in slices: magnetic resonance imaging (mri) Operates via strong magnetic field around head: utility: location tumors, injuries, structural or anatomical abnormalities, neuropsychological- location: neuroimaging- structure and functioning. Imaging brain function: positron emission tomography (pet)- injection of radioactive isotopes. They react with oxygen, blood, and glucose in the brain: functional mri (fmri) vs. mri- a view of brief changes in brain activity. Ptsds (numbing) have different brain activity than those hyper-vigilant (hyper-arousal) Advantages and limitations: provide detailed information regarding brain function, procedures are expensive, lack of adequate norms, procedures have limited clinical utility. Psychophysiological assessment: more generally assess brain structure, function, and activity of the nervous system; changes in the nervous system reflecting emotional of psychological events.

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