An electromyography needle electrode having an inner core and an outer elongated cannula surrounding the inner core, wherein the inner core includes tungsten. The inner core may comprise at least 99.95 percent tungsten. The outer elongated cannula forms an outer conductive electrode and the inner core forms an inner conductive electrode. At least one insulating layer may be formed between the outer elongated cannula and the inner core. The impedance of the anode and cathode may be matched more closely.
