Hello, I have a general design question about variation in the duration of null intervals. After running optseq with tnullmin set to 4 and tnullmax set to 10, the null intervals were nearly all 4 seconds in duration, with a few of 5 seconds. Is it generally a problem to have mostly identical null durations throughout a scan (there are 60 trials in this particular task)? If so, would you recommend reducing tnullmin to 2 seconds?
Thanks
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