There is a condition called foreign accent syndrome where a person may start speaking their native language with the intonation and phonology of a different language due to brain injury. It is possible to learn new languages throughout one's lifespan.
Dr. Eddie Chang
Eddie Chang, MD, a neurosurgeon and professor of neurological surgery at the University of California, San Francisco (UCSF) and the co-director of the Center for Neural Engineering & Prostheses.
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