A technique in which more than two dozen electrodes are placed at important locations on the scalp and they then record the brain's electrical activity in a way that is converted by a computer into colored images on a TV screen and used to detect abnormal cortical activity such as that occurring during an epileptic seizure is ________.
A) magnetoencephalography (MEG)
B) the electroencephalograph (EEG)
C) positron emission tomography (PET) scanning
D) magnetic resonance imaging (MRI)

Question

Quizplus · Accepted Answer

The technique described in the question is the electroencephalograph (EEG). Magnetoencephalography (MEG) measures magnetic fields produced by the brain's electrical activity, positron emission tomography (PET) scanning measures brain activity by detecting a radioactive substance injected into the bloodstream, and magnetic resonance imaging (MRI) uses magnetic fields and radio waves to produce detailed images of the brain's structure.

A Technique in Which More Than Two Dozen Electrodes Are