The textbook notes that "MRI and fMRI can be used to study sexual arousal during intercourse . . . " In such research, fMRI would use _____ to reveal _____.

Question

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fMRI (functional magnetic resonance imaging) uses strong magnets to measure changes in blood flow and oxygenation levels in the brain, which indicates brain activity. Therefore, in sexual arousal research using fMRI, strong magnets would be used to reveal the brain areas that are active during sex. None of the other options (radioactive tracers, X-rays, electrodes) are commonly used in fMRI studies.

The Textbook Notes That "MRI and FMRI Can Be Used