/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/ is in psychtoolbox-3-common 3.0.14.20170103+git6-g605ff5c.dfsg1-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEBasicTest.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeCa.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeCb.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeCc.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeCe.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeExtendedSourceLimit.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeExtendedSourcePhotochemicalLimit.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeLimitingConeAngle.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputePupilFactor.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEComputeT2.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEDeloriTest.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEDeloriTestInput.txt
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/AnsiZ136MPEPrintConditionalComparison.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/Contents.m
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/MPEByHand_580_2deg_100sec.docx
/usr/share/psychtoolbox-3/PsychRadiometric/PsychAnsiZ136MPE/MPEByHand_700_2deg_20000sec.docx