/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/ is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/gazeplotloop.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/iViewXCalibrateOld.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/iViewXGetCalibrationPoints.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/iViewXParse.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/iViewXReceive.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/iviewxsimple.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/sendscreensize.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/setiViewXDefaults.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/simplegazeplotter.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/simpleudp.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/temp.m
/usr/share/psychtoolbox-3/PsychHardware/iViewXToolbox/Obsolete/testiviewxcomm.m