hi,
i am a bit confused on the next stage of my analysis, this example is for 1
subject:
-each run can be in 1 of 4 combinations of stimulus presentation
-there are 8 runs in total, therefore each combination appears twice for
each subject
-therefore in each run there were 4 different 'blocks' of condtitions (not
including a fixation period)
-therefore each 'block' appears 8 times each over the 8 runs (ie-once in
each run)
now i want to take this and combine them all together so i get the mean
levels of activation (?is this the right term?) for each of the four types
of stimuli
then i want to be able to run contrasts on these eg. stim1 - (stim2+stim3),
stim2 - stim4 etc
So how would i best go about doing this in feat?
any help would be great! thanks,
andy
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