Can brain damage make you speak like a foreigner?
FAS, a.k.a. Foreign Accent Syndrome, mainly due to brain damage makes one native speaker, like a British never been to other places but UK, speak with an foreign accent and just doesn't sound like a British.
And maybe a genetic component is involved to affect the speech impediment. Here are many reasons to cause this syndrome, let's see how thing is.
https://tw.voicetube.com/videos/37879
