Using fMRI, speech neurobiology expert Dr Sophie Scott
found that our brain plucks words from other noises, and then uses two different areas to give it meaning. The left side of the brain takes care of the meaning of the word, while the right side of the brains reveals mood. Furthermore, research
shows that when exposed to negative communications, such as a frustrating meeting with a coworker, our brain changes its neural pathways and can make us feel like Negative Nancy for the rest of the day. On the contrary, we can turn back into Positive Polly with the help of a feel-good chemical, called dopamine. Our brain releases dopamine when something good happens unexpectedly. In addition, dopamine tells us this is the right thing to do and we should do it again. Exactly the kind of response you would want from your audience, right?