[Freesurfer] Optseq2 - Repeating Stimuli and Contrasting the Repetitions

2016-11-10 Thread Ruthie Shaffer
Hi all, I’m posting to ask for advice on setting up certain parameters in optseq2: Specifically, in optseq2, how can one set up parameters to best optimize a task where there are say 20 items presented 3 times, where the relevant contrasts are between the first, second, and third presentations

[Freesurfer] Optseq2 timing outputs

2017-08-08 Thread Ruthie Shaffer
Hi all, I sent a message previously and just wanted to check in one more time about this question (apologies for the repeat message!). I’m using Optseq2 to generate stimulus / jitter schedules and, depending on the TR I use, in the output files I see onset times like 124.4001 (instead of

[Freesurfer] Optseq2 onset times

2017-08-04 Thread Ruthie Shaffer
Hi, I’m using Optseq2 to generate stimulus / jitter schedules, and, depending on the TR used, in the output timing files I see several event onset times very close to the correct time, but slightly off (for example, something like 124.7999, instead of 124.8).  I’ve used the following command