/usr/share/psychtoolbox-3/PsychOpenGL/ is in psychtoolbox-3-common 3.0.9+svn2579.dfsg1-1.
This file is owned by root:root, with mode 0o755.
There are a lot of files here (849 total).
We're only showing the immediate contents of /usr/share/psychtoolbox-3/PsychOpenGL
.