Dear SPM users,
in DCM for induced responses the first step is a wavelet
transformation on each trial of the data. The TF-trials are then
averaged to get induced time-frequency that is afterwards. I have two
questions:
1.) What is the unit of the power shown in time-frequency result? (dB,%,...)
2.) Is the time-frequency rescaled in some way, like relative or log?
If this is the case which time interval is used as baseline and is it
possible to choose this interval (if used at all) manually?
Best regards,
Nils
__________________
Dipl.-Math. Nils Rosjat
University of Cologne
Biocenter
Zuelpicher Str. 47b
50674 Cologne
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