Eight-year-old Daria was having some disturbances in her sleep, so her parents took her to a children’s hospital to undergo various tests. She recalls sleeping in the hospital room with a bunch of wires stuck to her scalp. What technique was used in Daria’s sleep study?
A) functional magnetic resonance imaging (fMRI)
B) MEG (magnetoenchephalography)
C) electroencephalograph (EEG)
D) PET scan (positron-emission tomography)
E) CT scan (computer axial tomography)