Electrophysiology and Psychophysiology in Psychiatry and PsychopharmacologyPsychophysiology is an ever expanding field. The application of psychophysiological investigations to psychiatric disorders is likewise expanding and has in fact shed much light on some of the neural processes contributing to the development of psychiatric symptoms and or their amelioration following treatment. In the first part of this volume, we have selected a number of conditions where psychophysiological investigations have recently provided some