Excitable cells include nerve, sensory and muscle cells and they are studied by students of physiology, neuroscience, cell biology and biophysics. The text is well known among students and researchers for its thoroughness and clarity. Fundamental concepts are explained and key experiments are examined in some detail. The revised and restructured new edition takes account of recent advances in molecular biology, with 900 new references to bring the coverage up to date, but retains the same essential philosophy as previous editions.