Question

multiple choice question
the ______ records electrical activity in the brain through electrodes placed on the outside of the skull.

functional magnetic resonance imaging (fmri)
positron emission tomography (pet)
electroencephalogram (eeg)
magnetic resonance imaging (mri)

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Explanation:

• fMRI measures brain activity via blood flow, not electrodes.
• PET uses radioactive tracers to show metabolic activity, no electrodes.
• EEG uses electrodes on the skull to record brain's electrical activity, matching the description.
• MRI creates brain images using magnetic fields, no electrodes for electrical activity.

Answer:

C. electroencephalogram (EEG)