A researcher wants to obtain a "movie" of changes in the activity of the brain using images from different time periods. Which of these would be the BEST choice for this researcher?
A) electroencephalography (EEG)
B) computed tomography (CT)
C) positron emission tomography (PET)
D) functional magnetic resonance imaging (fMRI)

Question

Quizplus · Accepted Answer

Functional magnetic resonance imaging (fMRI) provides a high resolution, noninvasive method of measuring changes in blood flow related to brain activity. It can produce a "movie" of changes in brain activity over time. EEG and CT can provide snapshots of brain activity, while PET has lower resolution and involves the injection of a radioactive tracer.

A Researcher Wants to Obtain a "Movie" of Changes in the Activity