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2 amplifiers, 3 electrodes

Question asked by Kurt on Dec 8, 2012
Latest reply on Dec 10, 2012 by Emman.A

I am creating an EEG using two AD8226 instrumentation amplifiers. The electrodes are in the middle of the forehead, and at the sides of the forehead. I want to obtain 2 channels. Is it ok to have the first amp take inputs from Left, Center, and the other amp from Center, Right?

Electrode impedance may be anywhere from 20k to 100k ohm.

I want to make sure that connecting only one of the electrodes to two amplifiers won't create problems.

There is a right leg drive.

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