The installation unidisplay employs visual semiotics to examine various theories of perception. The work operates with a number of modules of different visual effects that interfere with the viewers’ perception. The installation unfolds against a long projection wall in a mirrored room, thus visually expanding like a mise en abyme. The basic visual – made up of graphic translations of various units of time measurement – acts as a world clock and evokes the notion of inter- twining time, between past, present, and future. This version of the installation unidisplay was specifically modified and extended for SonarPLANTA.