When Using FMRI to Find Increased Activity in Relation to a Behavioral

When using fMRI to find increased activity in relation to a behavioral task, researchers should ______.

A) target only specific brain areas
B) scan the entire brain to avoid missing interesting areas of activation
C) let the participants rest for 5 minutes after injecting the radioactive isotope
D) avoid repeating conditions, as that would require repeated radioactive exposures