Question

the electroencephalogram (eeg) measures what?
the electrical activity in the heart.
the radio frequency waves in the brain.
the gross electrical activity of the brain.
the oxygen flow in the blood to active areas of the brain.

Explanation:

An electroencephalogram (EEG) uses electrodes placed on the scalp to detect and record the overall electrical activity of the brain. It does not measure heart electrical activity, radio - frequency waves in the brain, or oxygen flow in the blood to active brain areas.

Answer:

The gross electrical activity of the brain.