George is having a test in which his brain's electrical activity is being measured by the wearing of electrodes that are placed on George's scalp. What is the name of this test?
A) electroencephalography
B) fMRI
C) x-ray
D) ultrasound

Question

Quizplus · Accepted Answer

The test where electrodes are placed on the scalp to measure the brain's electrical activity is called electroencephalography or EEG. Option B, fMRI, uses a magnetic field to image the brain's activity, while options C and D, x-ray and ultrasound, are not used to measure brain activity.

George Is Having a Test in Which His Brain's Electrical