Question

An amplified recording of the waves of electrical activity sweeping across the brain's surface; waves are measured by electrodes placed on the scalp.

A. PET scan

B. MRI

C. EEG

D. CAT scan

Answer 1

The answer is C. EEG. An EEG is an amplified recording of the waves of electrical activity in the brain, measured by electrodes placed on the scalp.The answer is C. EEG.

Step-by-step explanation:

The answer to the question is C. EEG.

An EEG, or electroencephalography, is an amplified recording of the waves of electrical activity sweeping across the brain's surface. Waves are measured by electrodes placed on the scalp. The signals received by the electrodes result in a printout of the electrical activity of the brain, or brainwaves. EEGs are commonly used to study sleep patterns and diagnose sleep disorders.