radioelectrophysiolograph

ra·di·o·e·lec·tro·phys·i·ol·o·graph

(rā'dē-ō-ē-lek'trō-fiz-ē-ol'ŏ-graf),
Formerly, an apparatus carried by an ambulatory patient by means of which changes in electrical potential from the brain or heart could be picked up and radio-transmitted to an electroencephalograph or electrocardiograph.
See also: telemeter.