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. Author manuscript; available in PMC: 2010 May 13.
Published in final edited form as: Auton Neurosci. 2009 Jun 10;150(1-2):127–130. doi: 10.1016/j.autneu.2009.05.250

Fig. 1.

Fig. 1

Cross section of electrode: hatch area represents where gel is poured. Note the convex of the gel on the side of the electrode that makes contact with the skin. This slight convex assures proper contact with the skin.