Since the discovery of the restoration of excitability of the nerve in potassium-rich media by application of anodal current(LORENTE DE No,1947; SATO and FUKUDA,1953),particularly recently,many investigations on the behaviours of various excitable membranes in potassium-rich media have appeared(STAMPFLI,1958;MUELLER,1958a,b and c;TASAKI,1959;LUTTGAU, 1959 and 1960;MEVES,1960 and 1961;WRIGHT and...