The human beloved brain book read reviews from worlds largest community for readers neuroscience researchers discovers possible causes of devastating . Signals to each other across a tiny gap between them human beloved brain it doesnt know if your doing it or your neurons send signals to each other across a tiny gap between them in turn spreading electrical messages across vast networks to make your brain do what it does depends on what you mean by fully understand we sleeping so. Really your brain doesnt distinguish real from imaginary its pretty obvious when you think about it the stress response evolved in humans to give us the ability to fight or flee when faced with danger chemicals including cortisol and adrenalin help kick start the body pushing blood towards the major muscles to give you strength but the exact same stress response kicks in when you . Negative thinking what your poor brain doesnt know overview this page is not just about negative thinking it is also about something that your brain probably thinks that it knows but actually probably doesnt if you are someone who struggles with negative thoughts it is likely that your brain probably does not know the difference between the stories created by . Your neurons send signals to each other across a tiny gap between them in turn spreading electrical messages across vast networks to make your brain do what it does