/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/ is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/AdditiveBlendingForLinearSuperpositionTutorial.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/AlphaImageTutorial.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/BoxBlurredVideoCaptureDemo.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/DriftingMaskedGratingTutorial.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/GazeContingentTutorial.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/ImagingVideoCaptureDemo.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/PlayDualMoviesTutorial.m
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/konijntjes1024x768.jpg
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/konijntjes1024x768blur.jpg
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/konijntjes1024x768gray.jpg
/usr/share/psychtoolbox-3/PsychDemos/PsychTutorials/octave-workspace