Event-related potential methodology has long been used in neuroscience to measure electrical activity in the brain. It has become clear, however, that it can also be a powerful tool in studying and illuminating central psychological issues relating to attention, information processing, mental dynamics, memory, and language. Linking this technology to newer imaging techniques such as positron emission tomography and functional magnetic resonance imaging, makes it possible to build up a spatial and temporal picture of the brain during the performance of high-level skills. This volume provides strong evidence that cognitive psychology can benefit from the use of brain electrical activity, and will be of great interest to neuroscientists and psychologists alike.