An EEG or brain-wave recording:
A) can precisely locate the source of activity.
B) reflects the activities of only a few cells at a time.
C) is done with the help of electrodes taped onto the scalp.
D) is recorded by inserting needle electrodes into the brain.

Question

Quizplus · Accepted Answer

An EEG or brain-wave recording is done with the help of electrodes taped onto the scalp. This non-invasive method detects and records the electrical activity of the brain by measuring the voltage fluctuations resulting from the ionic current within the neurons of the brain. It reflects the activities of large groups of neurons, rather than individual cells, and thus cannot precisely locate the source of activity. Needle electrodes are not used in EEG.

An EEG or Brain-Wave Recording