Hi all
we are doing an fMRI epoch related activation analisys for block design 1
stimulus vs baseline (8 scan stimulus vs 8 scan no-stimulus ,minus first 4
volume per session)
In the design specification (SPM2) should we model baseline as a second
trial (giving two onset vectors i.e [4 20 36 52 68 84 100] for stimulus and
[0 12 28 44 60 76 92 108] for baseline), or just specify 1 trial (stimulus
only) ?
Thanks in advance
Migani Marco
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