Dear FSL experts,
I could not find an appropriate answer in previous posts. I am trying
to analyse a block design dataset with long epochs (30 s ON, at least
18 s OFF, TR 2.5 s, no jitter with respect to TR). We know already
that the response does not follow the canonical HRF. I therefore
created a single subject design with 22 FIR basis functions with
window 55 s.
Having a single contrast for activation, I ended up with 22 copes per
subject. Just for the record, each subject had two such runs, so I
averaged the copes in a middle-level FE analysis. Now, is there any
other way to perform group analysis other than feeding all the cope
images to the group analysis, making a contrast for average per bin,
and F-test across all contrasts?
I wish to know a) where the brain activates at any timepoint (F-test)
and b) what is the shape of the response (single COPE or PE?).
Thanks for any help!
Cheers
Pavel
--
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-- MUDr. Pavel Hok
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-- Laboratoř funkční magnetické rezonance
-- Neurologická klinika
-- Lékařská fakulta
-- Univerzita Palackého v Olomouci
-- Fakultní nemocnice Olomouc
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-- Laboratory of functional magnetic resonance imaging
-- Department of Neurology
-- Faculty of Medicine and Dentistry
-- Palacky University Olomouc
-- University Hospital Olomouc
-- Czech Republic
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-- I.P. Pavlova 6, 775 20 Olomouc
-- web: fmri.upol.cz
-- tel.: +420 588 443 418
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