http://nymag.com/scienceofus/2015/03/what-a-neuroscientist-said-about-eminems-brain.html
*"I would predict that his dorsolateral prefrontal cortex might be smaller than average. That?s the area of the brain that filters curse words. (but he probably has more advanced connections in terms of his language areas [and] the medial prefrontal cortex has increased activation..."
So... he's like brain damaged but also the opposite. And so was Tommy "The Cheat" Edison -- and they both probably have a lot of crap they came up with that are epic fails but nobody knows about.
see also http://www.92y.org/Event/The-Neuroscience-of-Creativity.aspx (science, bitch!)
BUT how wrinkly is it?