Dear SPM experts,
I know that this matter has been already discussed on the mail list , but I
would still need more clarifications.
We try to model the following asymmetric paradigm :
Rest (6 scans) Activation (6 scans) Rest (6 scans) Activation (8
scans) Rest (8 scans)
We have seen in the spm mail list that this could be modelled as an
event-related design or using 2 different conditions (with variable
durations) in an epoch-related design. I would like to know which model is
more appropriate (i.e. what are the advantages and disadvantages of each
method) knowing that the 2 activation periods correspond to the same task
exactly (i.e. is it correct to consider 2 different conditions for the same
task?).
Thank you very much in advance. Any help or suggestion would be appreciated.
Florence
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