Hello, I'm trying to create trial sequences for a slow event related fMRI experiment. I have 10 classes of stimuli, and each stimulus lasts 5 sec and repeats twice in a run.
Environment: Linux 3.13.0-35-generic #62-Ubuntu SMP UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I ran: ./optseq2 --ntp 144 --tr 2.5 \ --ev evt1 5 2 --ev evt2 5 2 --ev evt3 5 2 --ev evt4 5 2 --ev evt5 5 2 --ev evt6 5 2 --ev evt7 5 2 --ev evt8 5 2 --ev evt9 5 2 --ev evt10 5 2 \ --nkeep 10 --psdwin 0 20 --o exp_video \ --tnullmax 25 --tnullmin 7.5 \ --nsearch 10000 Almost all of the sequences have extremely long NULL at the end of a run, like 82.5sec (please see one of sequences below). I am aware that optseq2 is for rapid event related fMRI, and wonder if the problem is due to specific parameters of my design, or due to a bug. I would appreciate any comments or help. Thank you very much! Best regards, Heeyoung 0.0000 5 5.000 1.0000 evt5 5.0000 0 7.500 1.0000 NULL 12.5000 9 5.000 1.0000 evt9 17.5000 0 7.500 1.0000 NULL 25.0000 3 5.000 1.0000 evt3 30.0000 0 7.500 1.0000 NULL 37.5000 10 5.000 1.0000 evt10 42.5000 0 12.500 1.0000 NULL 55.0000 7 5.000 1.0000 evt7 60.0000 0 10.000 1.0000 NULL 70.0000 3 5.000 1.0000 evt3 75.0000 0 7.500 1.0000 NULL 82.5000 4 5.000 1.0000 evt4 87.5000 0 15.000 1.0000 NULL 102.5000 6 5.000 1.0000 evt6 107.5000 0 7.500 1.0000 NULL 115.0000 6 5.000 1.0000 evt6 120.0000 0 10.000 1.0000 NULL 130.0000 8 5.000 1.0000 evt8 135.0000 0 17.500 1.0000 NULL 152.5000 1 5.000 1.0000 evt1 157.5000 0 7.500 1.0000 NULL 165.0000 2 5.000 1.0000 evt2 170.0000 0 7.500 1.0000 NULL 177.5000 10 5.000 1.0000 evt10 182.5000 0 7.500 1.0000 NULL 190.0000 8 5.000 1.0000 evt8 195.0000 0 7.500 1.0000 NULL 202.5000 9 5.000 1.0000 evt9 207.5000 0 12.500 1.0000 NULL 220.0000 4 5.000 1.0000 evt4 225.0000 0 7.500 1.0000 NULL 232.5000 7 5.000 1.0000 evt7 237.5000 0 7.500 1.0000 NULL 245.0000 1 5.000 1.0000 evt1 250.0000 0 7.500 1.0000 NULL 257.5000 5 5.000 1.0000 evt5 262.5000 0 10.000 1.0000 NULL 272.5000 2 5.000 1.0000 evt2 277.5000 0 82.500 1.0000 NULL _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
