English to Danish Tech/Engineering Computers (general) Computer equipment for cognitive testing

Two of these buttons are hooked up via USB to a laptop and then placed next to it, so that a test subject can use them to respond while undergoing various cognitive/psychological tests. For one, the subject's reaction time is being measured this way and helps diagnose brain conditions and/or brain damage. Does anybody know of a specific Danish term for these? Any helpful suggestions would be very much appreciated! :)