When used to detect lying, the functional MRI scan measures
A)galvanic skin response.
B)general emotional arousal.
C)the activation of extra brain areas.
D)hemispheric specialization.

Question

Quizplus · Accepted Answer

Functional MRI (fMRI) scans measure brain activity by detecting changes associated with blood flow. When used to detect lying, they focus on the activation of extra brain areas that are involved in the process of deception, as lying typically requires more cognitive resources than telling the truth.

When Used to Detect Lying, the Functional MRI Scan Measures