GO:0003168

The process in which a relatively unspecialized cell acquires the specialized structural and/or functional features of a Purkinje myocyte (also known as cardiac Purkinje fiber cell). These cells are specialized cardiomyocytes that receive signals from the bundle of His and innervate the ventricular cardiac muscle. [GOC:mtg_cardiac_conduct_nov11, GOC:mtg_heart]