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

Question

Quizplus · Accepted Answer

An EEG shows different patterns of brain activity that are associated with various states such as sleep, relaxation, and mental concentration.

An EEG, or Brain-Wave Recording