Patent ID: 8548602

Claim:
A method of stimulating a portion of a brain of a patient, the method comprising: inserting a cannula into the brain of the patient, the cannula comprising a cannula body and a plurality of cannula electrodes, wherein at least a portion of the plurality of cannula electrodes are disposed circumferentially around the cannula to form a plurality of rings of electrodes around a circumference of the cannula body, wherein each ring of electrodes comprises at least two of the plurality of cannula electrodes and wherein the rings of electrodes are spaced apart from each other at different lateral distances from a tip of the cannula body; using at least one of the plurality of cannula electrodes to find tissue to be stimulated, repositioning the cannula as needed to find the tissue to be stimulated; inserting an electrode lead into the cannula, the electrode lead comprising at least one stimulating electrode; removing the cannula from the brain leaving the electrode lead in place; and stimulating the tissue using the at least one stimulating electrode.