Psychtoolbox released

Psychtoolbox 3.0.18 Beta update "Experimental Taylor expansion " SP4 was released at 4th May 2022. As usual, the complete development history can be found in our GitHub repository. The release tag is “”, with the full tree and commit logs under the URL:

Minor bug fix for Linux + Wayland handling.


  • Prevent use of Wayland backend by default also under Octave, not just Matlab!
    setenv('PSYCH_ALLOW_WAYLAND','1'); to override for the adventurous and masochistic.