Dear all,
I cannot explain something that happen defining the design matrix in
spm99.
I put:
Stochastic design NO
SOA variable
Vector of onsets (scans) ? trial 1 = vector of n numbers
Variable duration YES
Durations (scans) = vector of n durations
But then it asks (again?):
Epoch length (scans) for trial 1.
What is it? It wants a number and not the same vector as in Durations.
Sorry for the level of the question.
Thanks.
--
Iole Indovina.
Laboratorio di Neuroimmagini funzionali
Fondazione Santa Lucia
Via Ardeatina 306
Roma 00179 (Italy)
Tel (+39) 0651501376
Fax (+39) 0651501213
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