An electrode assembly includes a substantially porous element configured to be coupled to an electrode for delivery of electrical current to a patient in a neurostimulation procedure. The substantially porous material defining a contact surface, of which at least a portion contacts the patient during the neurostimulation procedure. A first insulating member is coupled to the substantially porous element and exposed at the contact surface to prevent a portion of the contact surface from contacting the patient to deliver the electrical current during the neurostimulation procedure.
