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A friend of yours has granite counter tops installed in her kitchen, and asks you what you know about this type of rock. A reasonable answer would be:
PET
A diagnostic imaging technique that allows for the observation of metabolic processes in the body using radiolabeled substances.
Electroencephalograph
An instrument that measures and records the electrical activity of the brain.
Brain Waves
Electrical patterns of activity in the brain, measurable by EEG, that reflect different states of consciousness, sleep, and cognitive processes.
Functional Magnetic Resonance Imaging
A neuroimaging technique that measures brain activity by detecting changes associated with blood flow, used to observe brain structures and determine which areas are active during various tasks.
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