Yun,
first off, it would probably help if you described your experiment a bit
Dear SPMers:I'm a rookie on SPM, and currently doing a block designed fMRI experiment. I have 15 subjects, each performed 3 identical runs of my test, after 1st level analysis, gave me 45 contrast maps.My question is:(1) Will the contrast map be different if I applied different statistical level during the first level analysis?
(2) How should I be doing the 2nd level analysis, taking all 45 contrast map into account, or discard those with undesired results? Some collegues in our department suggest me to discard those with undesired results, although no other interference (i.e movement) was found.
(3) I conclude all the 45 contrast maps, it really gave me a glass brain with barely activations. How can I fix that?
Thanks for your time, any suggestion is appreciated.Yun LinGraduate studentDepartment of radiologySouthwest hospital, 3rd Military medical university, China.