Small electrodes are pasted onto Miranda's scalp and are connected by wire to a machine that translates the electrical energy from her brain into wavy lines on a moving piece of paper. From this description, it is evident that Miranda's brain is being studied through the use of ________.
A)a CT scan
B)functional magnetic resonance imaging
C)a microelectrode
D)an electroencephalograph

Question

Quizplus · Accepted Answer

Small electrodes pasted on the scalp and connected by wire to a machine that produces wavy lines on a moving piece of paper suggest the use of an electroencephalograph (EEG), which measures electrical activity in the brain. A CT scan and functional magnetic resonance imaging (fMRI) are imaging techniques that use different methods to visualize the brain's structure or activity, respectively. A microelectrode is a tiny electrode used to record the electrical activity of individual neurons inside the brain, which would not require externally placed electrodes on the scalp.

Small Electrodes Are Pasted onto Miranda's Scalp and Are Connected