[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR882.1330] [Page 433] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 882_NEUROLOGICAL DEVICES--Table of Contents Subpart B_Neurological Diagnostic Devices Sec. 882.1330 Depth electrode. (a) Identification. A depth electrode is an electrode used for temporary stimulation of, or recording electrical signals at, subsurface levels of the brain. (b) Classification. Class II (performance standards).