scanning and eval

PET FMRI CAT

shows the parts of the most active at a particular time

a radio active glucose tracer is injected into the paitent. the sreas of the brain that are most active use the most amount of glucose breaking it down and leaving radiactive material

to provide detailed images of the structure of the brain

anyone with metal in their body

takes pictures of both body and brain

paitent lies on a scanner while multiple images are taken via radiation to form an image

pregenat people/ exposure to radiation

pos- raine et alw

raine used a sample of 41 pp 39 male and 2 fmale in a matched pairs desighn of those who pleaded ngri and those who did not. riane use pet scans to determine activity in certain areas of the brain when shown agressive stimuli. he found that those who pleaded NGRI had a much higher activity on the right side of amygdala and lower activity on the pfc compared to controll t/f this shows how pet scans can be used to determine the role of brain activity inagression and provide reliable scentific findings

invasive pet scans require injection of a radioactive glucose tracer. some individuals may find this to uncomfortable or invase meaning they will not undergo the procedure t/f there is unethical limits on the amount it can be used on one person and may be less popular due to it’s evasive nature

sceientific all brain scans are scientific and so provide objective easy to analyse quantative data on paintents brain activity. t/f brain scans are a reliable and objective way of obtaining data and can be used to explain theh role of brain activity in agression

pop valid not everyone can have scans as fmri scans mean people with metal in their body- e.g stents can’t have scans and those who are pregnant can’t have CAT scans t/f this decreases the sample size of tested methods decreasing the validity