Clinical Neurophysiology has evolved into a subspecialty internationally. In India, the electrophysiological studies often have to be undertaken by the clinicians themselves or by dedicated neurophysiologists. Recent advances in clinical neurophysiology and valuable feedback from the clinicians and students prompted to revise and modify this book. Most of the clinical reports and illustrations in this book are from the authors' published papers and personally managed patients. It is hoped that this book would continue to interest the readers and would translate into better patient management and meaningful research.