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Measures activity, involves the injection of a radioactive tracer into the bloodstream with glucose or water to go where the blood flows. The signals from the postirons are recorded so levels of activity in the brain can be detected
participants are scanned when… inactive (to produce baseline measure)
when performing an activity
Electrodes are placed on the scalp, and record activity in the brain; the more electrodes placed, the more detailed the information collected is. Electrodes are fitted to a cap and placed on patients head with conductive gel.
Activity is displayed in brain waves
amplitude: brain intensity
frequency: speed of activation