Thanks to tremendous technical advances in molecular biology and cellular imaging after those in electrophysiology, there is now a deep understanding of the physiology of nerve cells and their synaptic interconnections. The complexity of the brain emerges from the communication and interaction between billions of these elements. This book explores systematically and didactically the details of neuronal physiology, covering membrane biophysics, receptor physiology, sensory transduction and synaptic transmission with its selective pharmacology. Readers of the book will be fully equipped to understand the functions and possibilities of the key units of the brain parallel computations.