Dear FIR aficionados,
1) I was wondering whether there are any recommendations ('hard' or 'soft')
on how to select bin size in doing a FIR analysis.
More specifically, I wonder how to interpret the results if bin size is
shorter than the TR.
2) I guess the way a FIR analysis is setup in SPM5 it does not take into
account the hemodynamic delay - i.e., the first bin after stimulus onset
would not actually reflect the response at stimulus onset, but 'activation'
that happened about 4-5 sec ago. So in order to see onset-related resposnes
I would have to assess a bin 4-5 s post stimulus.Am I correct with this?
In general: are there any full papers out there describing the FIR approach
in some more detail?
THANKs for any feedback,