The Lumina LU-400 is a four button patient response system designed specifically for use in fMRI or MEG (magneto-encephalography). The system consists of several components including the pads, controller, and over 40 meters (140 feet) of fibre optic cables.

Lumina includes features such as built in reaction time measurement, scanner trigger input to synchronise the presentation of stimuli, and a highly configurable TTL connector. Lumina has been successfully tested with 1.5T and 3T scanners.