Our ability to hear and understand a second language becomes more and more difficult with age, but the adult brain can be retrained to pick up foreign sounds more easily again. This finding, reported by Dr Paul Iverson of the UCL Centre for Human Communication, at the "Plasticity in Speech Perception 2005" workshop - builds on an important new theory that the difficulties we have with learning languages in later life are not biological and that, given the right stimulus, the brain can be retrained.
Source Medical News Today