I have noticed that, now that I've entered decade #6, my brain is frequently abducted by aliens. As you can imagine, it's very embarrassing when in mid-sentence you suddenly can't think of a word, or can't remember what you were talking about.
It would appear that there is a "dose" of swearing that works best. If you swear too much it reduces its benefit, but if you do not swear at all, you may not have as a high a pain tolerance. Swearing seems to have a protective effect -- to a point.
Chad Ruble's mother had a stroke some years ago and was left with aphasia. Ordinary phone conversation and email pose challenges. Chad built a system that helps his mother "Kinecticate" with her friends and family.
Author Diane Ackerman was on a book tour promoting "An Alchemy of Mind: The Marvel and Mystery of the Brain" when her husband, Paul West, suffered a massive stroke that radically combusted the alchemy in his own brain.
When I first learned that Rep. Gabrielle Giffords had been shot in the left temple, I felt a fierce pang for her, because I knew only too well what damage to that part of the brain can usher in-- a suite of disabilities, affecting everything from language to locomotion.