Small metal disks are pasted onto Miranda's scalp and they 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 electroencephalogram

Question

Small metal disks are pasted onto Miranda's scalp and they 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 electroencephalogram

Quizplus · Accepted Answer

The description of small metal disks connected to a machine that translates electrical energy from the brain into wavy lines on a moving piece of paper suggests the use of an electroencephalogram (EEG). A CT scan uses X-rays to create 2D images of the brain, functional magnetic resonance imaging (fMRI) uses magnetic fields to measure changes in blood flow to different regions of the brain, and microelectrodes are tiny probes inserted into the brain to record electrical activity of individual neurons.

Small Metal Disks Are Pasted onto Miranda's Scalp and They