Invasive electrodes in long-term monitoring
GH Klem and S Nehamkin · 2008
The epidural peg electrode consists of a 3/16 inch stainless steel disk embedded in a mushroom-shaped body of Silastic. A multistranded stainless steel wire is soldered to the disk and exits through the cap of the electrode. The length of wire exiting the peg is approximately 20-25 cm in length and terminates with a standard electrode jack. These electrodes are placed in the operating room with the patient under general anesthesia. The surgeon places the electrode under the skin, opening the cranium with a twist drill allowing the electrode direct contact with the dura. Localization for the sites is determined through previous recording sessions and special anatomical considerations derived from imaging studies.