“…However, recent case studies suggest that structural damage to the brain may not necessarily be a prerequisite for a speaker to acquire a foreign accent, and that the observed changes can at least partially be attributed to psychogenic causes. This has been reflected in the new taxonomy suggested by Verhoeven and Mariën (2010). Reported cases of psychogenic origin of FAS include episodes of psychotic schizophrenia (Reeves, Burke & Parker, 2007), bipolar disorder (Poulin, Macoir, Paquet, Fossard & Gagnon, 2007), and conversion disorder (Haley, Roth, Helm-Estabrooks & Thiessen, 2010;Verhoeven, Mariën, Engelborghs, D"Haenen & De Deyn, 2005).…”