Of the Many Research Methods Used to Investigate the Brain

Of the many research methods used to investigate the brain and its role in behavior, fMRI depends on ______, whereas PET depends on __________.

A) Blood flow and oxygenation; radioactively-labeled glucose.
B) Single-unit recordings; blood flow and oxygenation.
C) Radioactive-labeled glucose; blood flow and oxygenation.
D) Brain lesions; radioactive-labeled glucose.