fMRI (functional magnetic resonance imaging): This brain scanning technique measures changes in blood flow in different areas of the brain to identify active regions during a memory task.
PET scan (positron emission tomography): This imaging technique uses radioactive tracers to measure brain metabolism and identify active brain regions during a memory task.
EEG (electroencephalogram): This method records the electrical activity of the brain using electrodes placed on the scalp and can show patterns associated with specific cognitive processes during a memory task.