But when Sirigu and colleagues used transcranial magnetic stimulation — a technique that
employs magnetic fields to excite neurons in the
brain — to stimulate specific fragments of the motor cortex, they found that the «hand
areas» in the motor cortex of both men had reassumed their original «wiring.»
They often work on a particular topic such as the
brain, memory, attention, and other
areas and are frequently
employed by universities.