Recently I made a post about things that you see in movies involving brain injury that don't really happen in real life. But I don't want to spoil all the fun, so I thought I would make a post about something cool that actually can happen in a brain injury that you wouldn't think was real, but it is. And that's foreign accent syndrome.
I recently saw a case of this, and I talked to a neurologist who told me she's actually seen many cases in her career, Although most of these involved stroke. Some cases she told me about:
1) an Italian American man who had started speaking with a Haitian lilt
2) A native Californian who started speaking with a British accent
And all of these cases, the patient had never even been to the country whose accent they had adopted. Apparently the etiology involves damage resulting in altered pitch or mispronounced syllables, causing speech patterns to be distorted in a non-specific manner. So it's just a coincidence that your speech sounds like it comes from a specific place.
As far as I'm concerned, it's a good thing that can come out of a stroke or brain injury if you are an American. As Jason Lee said, Americans totally got screwed on accents.