If you are using an E-Prime / Presentation / Python visual paradigm, check that the image on the appropriate screen in the MSR, is the image that is on the right-hand stimulus monitor in the MEG scan suite.
N.B. If an incorrect image is being shown, refer to the troubleshooting guide.
If the study uses a default auditory or visual paradigm, you will be using the auditory BNC trigger line. To confirm that the triggers are set up correctly, run the Parallel Port Reset program. This will confirm that you are getting triggers, and also set the trigger-channel in your acquisition to zero. To run the Parallel Port Reset program, do the following:
Double click on the “ParallelPortReset” folder on the Desktop of the Stimulus PC.
Right click on “reset.py” (with the Python Icon), and chose to “Edit with IDLE”.
Select the “Run” option from the “Run” drop down menu.
On the Real Time Display monitor you should see the trigger line go high for a few seconds, and then return to zero.
The experimenter may wish to check on the Real Time Display that their stimulus presentation script is sending the appropriate triggers. Should they choose to do this, you will need to re-run the Parallel Port Reset program; as the test run of the stimulus presentation script may have left one of the pins on the parallel port high. So it is essential that the parallel ports are reset after a test run of a stimulus presentation script.
If the study uses a bespoke trigger setup, set up the triggering hardware and cabling as described in the Experimental Setup sheet. Confirm with the experimenter whether there is any reason not to run the Parallel Port Reset script to set all the pins on the parallel port to zero. Unless there is a reason not to run the script; run the script as detailed above. The experimenter may want to run their paradigm to confirm that triggers are present. If they do, you will need to re-run the Parallel Port Reset script (if appropriate).