Study: The brain has a small window of opportunity to repair itself after stroke Feb 16 2021 An international study has shown, for the first time, that the capacity of the human brain to recover and rewire itself peaks around two weeks after a stroke and diminishes over time. The finding, published today in the Neurorehabilitation and Neural Repair journal, is the result of a study in London and Adelaide that followed the recovery of 60 stroke patients up to one year after their stroke. Lead author Dr Brenton Hordacre, from the University of South Australia, says the multi-site study showed conclusive evidence that the brain only has a small window of opportunity to more easily repair itself after stroke.