Systems and methods for removing and replacing conductive adhesive layers of an electrode array

An apparatus comprising:

• a subassembly comprising at least one electrode element having a skin-facing side and a skin-facing surface;
• and
• a plurality of layers comprising conductive adhesive, wherein the plurality of layers comprise an outermost layer that forms a skin contact layer and at least one intermediate layer disposed between the at least one electrode element and the skin contact layer, wherein the skin contact layer is coupled to the at least one intermediate layer, and wherein the skin contact layer is configured to be decoupled from the at least one intermediate layer, wherein the skin contact layer is electrically coupled to the subassembly and is disposed on the skin-facing side of the at least one electrode element, wherein the skin contact layer is electrically coupled to the electrode and configured to contact skin of a subject, and wherein at least a portion of the skin contact layer is selectively removable from the at least one intermediate layer, wherein, upon decoupling the skin contact layer from the at least one intermediate layer, the at least one intermediate layer is configured to form an outermost skin contact layer.