Dear SPM experts,
I am struggling to understand (or even find discussion of) the impact
of using seconds or scans when specifying an efMRI model (spm5). Can
anyone point me to find a clear discussion of this, and the effect on
SOTs? With my limited knowledge the spm5 efMRI example seems
counterintuitive - 'Units for design' is 'scans', but the SOTS are in
seconds.
Also, is possible to specify the first onset time in a SOT train as a
negative value?
Any assistance much appreciated.
Christopher Benjamin
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