[FieldTrip] zero-padding VS mirror-padding (ft_freqanalysis)

Tzvetan Popov tzvetan.popov at uni-konstanz.de
Mon Sep 21 11:09:17 CEST 2015


> Thanks for you suggestion Tzvetan!
> I was trying to avoid data-padding since both prior and after my period of interest the participant receives sensory stimuli, so the brain signal in the periods preceding and following my period of interest is radically different. 
Well it depends on the sliding window length at the end I guess. If it’s not feasible -sure.
> For this reason I thought that it is better to use either mirror- or zero- padding instead. Would you agree?
I would try both and see how they affect the dependent metric. Your ultimate goal I suspect is to reject H0. If this is equally possible with either strategy- fine.  
> I still don't know which one though, hence my previous 'mirror VS zero padding' question.
Seems that you don’t have much of a baseline to begin with. Would frequency analysis also be an option?

> Best,
> Maris
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