The index to detect sleep depth is () A: body temperature change B: electroencephalography (EEG) C: breathing change D: pulse change E: blood pressure change

Which of the following belongs to other tests? A: Complete Blood Count(CBC) B: Stool Test C: Electrocardiography (EKG) D: Electroencephalography(EEG) E: Computed Tomography(CT-Scan) F: Urine Test

Which imaging method should be used when we want to observe overall brain activity? A: Magnetoencephalography (MEG) B: Positron emission tomography (PET) C: Electroencephalography (EEG) D: Magnetic Resonance Imaging (MRI)