When nerve cells in the brain pass electrical signals to each other, they create tiny electric fields that can be sensed from outside the skull.
Research published today shows that walking again is possible for individuals with spinal cord injury. After electrical stimulation, three people with lower leg paralysis could walk to some extent.
Born in Italy in 1909, Levi-Montalcini avoided being transported to Auschwitz as a young woman and rose to prominence as a neurobiologist. She was a co-recipient of the 1986 Nobel Prize for Medicine.