The skull bones and other tissues separating the brain from electrodes can create a problem for recording by blocking
A) the brain's electrical output more than its magnetic output.
B) the brain's magnetic output more than its electrical output.
C) the brain's magnetic and electrical output equally.
D) neither the brain's electrical nor its magnetic output.

Question

Quizplus · Accepted Answer

The skull bones and other tissues are more effective at blocking the brain's electrical output than its magnetic output, which is why techniques like magnetoencephalography (MEG) can detect brain activity with less distortion than electroencephalography (EEG), which measures electrical activity.

The Skull Bones and Other Tissues Separating the Brain from Electrodes