Dear Thomas,
> In SPM96 there was an option two model the response with 'two temporal
> basis functions'. I could not find this option in SPM99b any more.
> Which of the other models can I use instead to look at the early and
> late responses ?
Use 'mean and exponential decay'. This is an equivalent formulation in
terms of within-epoch adaptation' suggesting the earlier responses
supervene over later responses. Furthermore these two basis functions
allow more easily interpretable contrasts.
With best wishes - Karl
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