The problem is probably that you have specified a maximum for the null event and it just does not need as much run time (# of time points) that you have allocated.
On 07/16/2015 06:17 PM, Heeyoung Choo wrote: > 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 > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.
