The Wonder Brain and Nervous System

Introducing a book on Wonder Brain and Nervous System feels a little like grandly opening a door to a magnificent mansion that one does not own . I want to focus on some of the new questions and issues that now flourish in the shadows of many bright successes of neuroscience . Like how neuron works ? why brain is considered the master of whole body ? what happens when things go wrong in brain ?why does brain's functioning capability slows down when it gets aged ? why subconscious mind is more powerful than conscious mind ?