The patient's brain activity is monitored via electrodes taped to the skull.
A wire connects the chip to the electrode attached to the brain stem.
When the amputee tells the fingers to close, the designated muscle twitches and the electrode over it detects the signal.
Mig welding is a kind of arc welding that uses a metal electrode to match the alloy of the work section and an inert gas to transfer oxygen from the weld.
