This book describes the structure and function of the brain and nervous system. You will be able to understand a number of tasks such as motor control, visual processing, auditory processing, sensation, learning, memory, and intelligence. It provides an easy and enjoyable means of learning and reviewing the fundamentals of the human brain through key concepts and progresses in small, logical, easy-to-learn increments. It is ideal for the nonexpert-students, professionals and amateur people alike. This book explores the latest findings that demonstrate, through the use of technology like brain scans, that the old-aged brain is more flexible and more capable than previously thought. Dr. Elsersawi, one of the authors of this book, is an electrical engineer by training and a biochemist by inclination. He represents the brain as a closed box; of which the input can be one electrical pulse, and the output is of multi-order feed back loops. For example, you can measure the voltage, current, frequency of the electrical signals input to the brain, but you can not measure simultaneous individual signals distributed among the parts of the brain. Each individual signal passes though complicated pathways to execute certain functions such as perception, analysis, and task.