An EEG or brain-wave recording:
A)is useful and very precise.
B)reflects the activities of only a few cells at a time.
C)shows different activity associated with sleep,relaxation,and mental concentration.
D)is recorded by inserting needle electrodes into the brain.

Question

Quizplus · Accepted Answer

An EEG records electrical activity of the brain and can show different patterns associated with various states like sleep, relaxation, and mental concentration.

An EEG or Brain-Wave Recording