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 electroencephalogram

Question

Quizplus · Accepted Answer

The electrodes pasted onto Miranda's scalp and connected by wire to a machine that translates the electrical energy from her brain into wavy lines on a moving piece of paper indicate that her brain activity is being studied through an electroencephalogram (EEG) test. Option A, a CT scan, uses X-rays to produce detailed images of the brain's structure, while option B, functional magnetic resonance imaging (fMRI), uses harmless radio waves and strong magnets to produce detailed images that show changes in brain activity. Option C, a microelectrode, is a tiny electrode that is inserted directly into the brain tissue for measuring the electrical activity of single neurons or small groups of neurons, which is different from an EEG.

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