EEG (electroencephalogram)
Recording of the waves of electrical activity sweeping across the brains surface. Waves are measured by electrodes placed on the scalp
CT (computed tomography) scan
Series of x-ray photographs taken from different angles and combined by the computes in to a composite representation of a slice of the brains structure (3-D image)
PET (positron emission tomography) scan
Visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task
MRI (magnetic resonance imaging)
Technique that uses magnetic fields and radio waves to produce counter generated images of soft tissue (3-D pic of brain more detailed than CAT scan)
fMRI (functional MRI)
A technique for revealing blood flow and brain activity by comparing successive MRI scans. Show brain function as well as its structure
