Hi SPM users,
I have been trying to create a matlab file that contains vectors that will allow it to know my SOA for each epoch, however, I
was assuming that I just need to calculate which slice the stimulus onset occurs, as I am assuming that scans = slice not volume is
this correct?
I had a look at Rik Henson's file ( from example dataset named sots)and his SOA matlab file says that values are in TR I have now idea what he means by this, I know that the TR = repetition time, in my case = 3sec.
Could anyone who has made such a file like this to enter in the design matrix under variable SOA help? If so how do you go about calculating the values to enter, are they in time, slice or volume?
My design is a 2x2 factorial block design with 2 tasks and 2 delays
thus 2 control conditions with corresponding delays.
all trails are randomised and blocked into 3 trials of the same condition.
My TR = 3sec, 16 slices per volume total of 642 volumes per subject
short delay trials = 10volume per epoch, long delay trials = 14volumes per epoch.
Many thanks
Jade
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