This book represents the proceedings of the 3rd International Symposium on Body Surface Mapping (BSM) held at Nijmegen; the Netherlands, from 11th to 13th of June, 1985, under the auspices of the International Council on Electrocardiology. This meeting brought together a group of international scientists en- gaged in the field of the study of electrocardiographic body surface po- tentials. Previous meetings of this kind took place at Burlington, Vt; U.S.A. in 1972, organized by Rush and Lepeschkin, and in 1982 at Tokyo or- ganized by Yamada, Harumi and Musha. The special aims of this 3rd...