Electroencephalography and the Event-Related Potential. Voltage. Time. Place an electrode on the scalp and another one somewhere else on the body Amplify the signal to record the voltage difference across these electrodes Keep a running measurement of how that voltage changes over time
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4 Hz + 8 Hz + 15 Hz + 21 Hz =
Q = % signal change over baseline
Sometimes that isn’t very useful - we want to know the generator source in 3D
This is most likely
location of dipole
Compare to actual data