A researcher is using a strong magnet to track blood-oxygen changes in participants' brains as they complete decision-making tasks. The researcher is using _____ to examine the brain's activity.
A)computerized axial tomography (CAT).
B)positron emission tomography (PET).
C)electroencephalogram (EEG).
D)functional magnetic resonance imaging (fMRI).

Question

Quizplus · Accepted Answer

Functional magnetic resonance imaging (fMRI) uses a strong magnet to track changes in blood-oxygen levels in the brain, allowing for the examination of brain activity during different tasks. CAT scans and PET scans use different methods to create images of the brain's structure and function, while EEG records electrical activity on the scalp and does not provide detailed images of the brain.

A Researcher Is Using a Strong Magnet to Track Blood-Oxygen