Which brain imaging technique allows scientists to draw causal inferences between variables?
A)Positron-emission tomography (PET scan)
B)Functional magnetic resonance imaging (fMRI)
C)Computerized axial tomography (CAT scan)
D)Transcranial magnetic stimulation (TMS)

Question

Quizplus · Accepted Answer

Transcranial magnetic stimulation (TMS) allows scientists to temporarily disrupt or enhance brain activity in a specific area, thus allowing for causal inferences to be drawn between brain function and behavior. PET scans and fMRI can show correlations between brain activity and behavior, but cannot establish causation. CAT scans are useful for visualizing brain structure, but cannot show brain function.

Which Brain Imaging Technique Allows Scientists to Draw Causal Inferences