LUPA improves the analysis of long data fragments and hypnograms and a precise measuring tool allows the user to analyze precisely each graphic element of the PSG. It is possible to connect any type of electrophysiological sensor, e.g. Sp02, breathing, limb movement, body position, snoring, air flow, EMG, EOG and other. Moreover, it is possible to connect a multi-camera videometry subsystem and other synchronised PSG examination posts - the EEGDigiTrack system can be used to fully equip a polisomnography room.