An electronic antinausea instrument is an apparatus that provides low-frequency electric stimulation percutaneously through a pulse generator that looks similar to a wristwatch. The pulse generated is transferred to the brain cortex via the median nerve in the wrist. The electric pulse is supposed to adjust a number of activities, including the central stimulation of nausea and vomiting in the brain. This type of device was studied in patients with cancer for its effect on chemotherapy-induced nausea and vomiting.