This new electronic device the size of a mobile phone could transform aftercare for stroke patients and help them regain movement and control of their hands.
See also: Subtle signs you're having a stroke
See also: Could it be a mini-stroke?
The small bit of kit, which is being tested in medical trials, delivers a series of weak electric shocks followed by an audible click to strengthen brain and spinal connections.
Scientists hope that it will soon be available to stroke patients around the globe.