Please enable JavaScript.
Coggle requires JavaScript to display documents.
brain scanning techniques - Coggle Diagram
brain scanning techniques
PET
uses a tracer
detects radioactive material in the body
when radioactive material breaks down it detects the gamma waves
CT
uses a series of x rays to create a cross sectional image
fMRI
uses radio waves in a magnetic field and detect changes in blood flow
eval
-results are not always easy to interpret, difficult to draw conclusions
-the precise location of active areas, difficult to pinpoint
+indicate specific areas of brain involved in experience, evidence for localisation of function
-expensive
-exposure to radiation
+can study structure and function of the brain
eval
safe to have if pregnant
can study structure and function of brain
non invasive
not allowed to wear metal
very noisy!
eval
fast to do
non invasive
exposure to radiation
not advised for pregnant women
less sensitive to movement