Definition and displaying with colour on the signal window of various types of respiratory disorders (central/obstructive/combined apnoea, hypopnea, desaturation), various patterns of encephalic activity, which allow defining sleep stages (sleep spindles, К-complexes, slow-wave activity), eyes movements (REM, SEM), epileptiform activity evidences, movements (periodic and single limbs movements) and other sleep events. Automatic search of some sleep events (apnoea, snore, desaturation, eyes movements).