https://wiki.mrrc.pitt.edu/ 2026-06-04T20:35:50+00:00 https://wiki.mrrc.pitt.edu/ https://wiki.mrrc.pitt.edu/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2025-12-11T14:59:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.mrrc.pitt.edu/doku.php?id=mr:task:eprime&rev=1765465168&do=diff EPrime Task Presentation Software Psychology Software Tools' E-Prime is a proprietary Windows program providing a graphical interface for building and compiling research experiments. Compare to Psychopy and Psychtoolbox. The MRRC has development licenses for each scanner and practice room. text/html 2025-06-11T16:23:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.mrrc.pitt.edu/doku.php?id=mr:task:psychopy&rev=1749658995&do=diff Psychopy psychopy (source code) is experiment creation software. It provides both a graphical interface: "Builder" a la EPrime Task Presentation Software; and a python library: psychopy/“"Coder" a la MATLAB/Psychtoolbox. Builder Set keyboard interface to wait for = release. Also see Triggering Task Start and Log Task Start Time text/html 2025-04-05T14:47:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.mrrc.pitt.edu/doku.php?id=mr:task:psychtoolbox&rev=1743864458&do=diff Psychtoolbox Timing It is necessary to log onset timing of stimuli for first level analysis, and important to be aware of how time is recorded. Docs * <http://psychtoolbox.org/docs/Screen-Flip> Flip (optionally) returns a high-precision estimate of the system time (in seconds) when the actual flip has happened in the return argument ‘VBLTimestamp’. .... ‘FlipTimestamp’ is a timestamp taken at the end of Flip’s execution. Use the difference between FlipTimestamp and VBLTimestamp to get… text/html 2025-06-11T16:31:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.mrrc.pitt.edu/doku.php?id=mr:task:trigger&rev=1749659482&do=diff Triggering Task Start The Prisma scanners send a = key push to the task computer every TR (see TTL hardware). To ensure your task and the MR image acquisition are in sync, a “Waiting For Scanner” screen in your task should pause until it receives this key.