You look around the office, notice the last cookie in the box on the next table and take it. Only two seconds, but millions of processes are happening in your brain. The reason for everything is impulses, it is with the help of them that neurons communicate with each other. Behind the desire to eat sweets, familiar to each of us, lies a fascinating journey of impulses through the brain - through the flickering galaxy of neurons and the deep darkness of the cerebral cortex. Mark Humphreys, a neuroscientist and the author of this book, explores the workings of impulses and tries to understand the most intriguing questions in brain science. How do we make decisions, control our bodies, and recognize faces (and cookies)? What does science even know about impulses? And how many more secrets does our brain keep? This neuroodyssey will give you a new look at how the brain works and its amazing capabilities.