If a person had his brain waves recorded to measure electrical activity, he MOST likely had a(n) :

A) positron emission tomography (PET) scan.
B) magnetic resonance imaging (MRI) scan.
C) computerized axial tomography (CAT) scan.
D) electroencephalogram (EEG) .

Electroencephalogram (EEG)

A test that detects electrical activity in your brain using small, flat metal discs (electrodes) attached to your scalp.

Brain Waves

Electrical patterns in the brain that can be measured using an electroencephalogram (EEG) and are associated with different states of consciousness.

Electrical Activity

The movement of electrons or ions as part of a process within systems, particularly in biological contexts such as neural or cardiac functioning.