US Air Force tests handheld nerve-stimulating device to zap tired soldiers into alertness

For years, some people who suffer from epilepsy and depression have found relief through implanted devices that stimulate the vagus nerve in the neck with pulses of electrical signals. More recently, handheld vagus nerve stimulation (VNS) devices that deliver the current through the skin of the user's neck have been FDA approved to treat migraines while research studies even suggest the technology can improve memory and learning in animals and humans. — Read the rest