Recovery From Damage

After a stroke kills tissue, healthy regions nearby can slowly take over the lost job. Doctors push this on purpose with constraint-induced therapy: they restrain the patient's good arm so the weak one is forced into use all day. The relentless practice drives the brain to rebuild motor control, often restoring movement that looked permanently gone.

The brain hands out territory based on demand, like a city rezoning land where the traffic flows. Lose speech to a stroke and the damaged language area may be gone for good, yet neighboring circuits can be trained to pick up the work. The catch is that the rewiring is slow and repetition-hungry, which is exactly why intensive, daily practice beats occasional effort in rehab.