I am trying to compare activation from an event-related version of a paradigm to a block version. Our subjects have 1 run of the block and 3 runs of the ER. I have 1st level analyses for each of these 4 runs per subject and am now wondering which is the correct way is to setup the higher-level Block vs ER analysis:
1.) Do I first create a 2nd level ER analysis for each subject (with the 3 runs as the input) and then set up a 3rd level analysis with the copes from the block 1st level and the ER 2nd level (so 2 copes per subject) and run a paired t-test?
or
2) Do I create a 2nd level analysis with 4 inputs per subject (1 block FEAT and 3 ER FEATs) and then set up the paired t-test with contrast weights 1 (block) and .33 (for each of the 3 ERs)?
Many thanks,
Jen
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