Which Electrode Is Used as a Ground Reference
A reference electrode scans the solution close to the metal surface and measures the potential referred to another reference electrode placed in a stationary position. Electrodes most commonly recommended by Diagnosys. Grounding Electrodes Iaei Magazine The earth is considered to be at zero potential. . As the name indicates this electrode is connected to the ground circuit of the amplifier and it thereby picks up electrical noise that does not reach the other scalp electrodes. Reference electrodes are used in two discrete ways in buried pipeline applications. It is important to know that aluminum electrodes are not allowed for use in grounding. The virtual reference is the linearly combined signal of the recordings from all the electrodes during offline processing after the EEG data acquisition. I havent managed to find out why the ground electrode is needed at all and why the amplifier cannot simply do the A-R. An adhesi...