Dear all:
I am designing a event-related fMRI experiment.The stimulation duration
must be 4s.I don't know whether there are any problems with this long
duration.My question is how to set TR and jittered SOA with the long
duration.
Can I set TR as 2s? Thus, I can set "jittered SOA" as 6,8,10(divisible
by a TR). But this means there are two images within one stimulation,I
wonder which one is needed by SPM?
Or I set TR as 4s, then,can I set SOA same as 6,8,10(divisible by half
TR)? Otherwise, the whole time is too long.
Really, I feel douted with the relation between TR,SOA,stimuli
duration.
Thanks!
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