A device that records waves of electrical activity sweeping across the surface of the brain is called a(n)

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The device that records waves of electrical activity sweeping across the surface of the brain is called an electroencephalogram (EEG). The other options are imaging techniques that use different methods to create images of the brain. fMRI (functional magnetic resonance imaging) measures changes in blood flow and oxygenation in the brain, PET (positron emission tomography) scan measures changes in metabolic activity, and MRI (magnetic resonance imaging) uses a magnetic field and radio waves to create detailed images of the brain's structure.

A Device That Records Waves of Electrical Activity Sweeping Across