Recent progress has led to a better understanding of the molecular structure of sodium channels, how they work and the mechanisms that restrict their expression to particular cell types. This book explains how these channels are modulated in various pathological states to enable the development of therapeutic strategies based on sodium channel restoration. The authors present the most current research on sodium channels and neuronal function. Brings together both the basic biology and biophysics with detailed consideration of the medical applications in chronic pain and epilepsy. Includes coverage of channelopathies, sodium channel gene expression, the modulation of sodium channels, and molecular mechanisms of gating and drug block of sodium channels.