Hi all,
I have an experiment where there 85 jittered randomised trials (each 3.5 seconds) and the remaining time is rest. Total time of the experiment is 700 seconds. total volumes = 280. Now these trials represent 5 conditions (where the amplitude of the stimuli changes from simple to hard).
Since it is an event randomised design, I would like to extract from SPM the volumes represent these trials and which of the volumes correspond to the different conditions. So for example volume 1 correspond to trail 1 which has PM of 1;volume 2 correspond to rest; volume 3 to rest; volume 4 to trial number 2 which has PM of 5 or the hardest....etc. I should note that I model them as poly functions so the main effect is zero order an te linear term is first order.
This is especially confusing because I specify my units in time not scans.
Aser
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