[FieldTrip] problem with dpss

[Frederic Roux]

Dear JM,

thank you for the hint.
I was not aware of this thread in the faqs.

Removing the DC offset seems to solve the problem indeed.
It's funny though, that using

cfg.demean = 'yes';
data = preprocessing(cfg,data);

did not do the job.

I had to manually remove the DC with

data.trial{1} = data.trial{1} - mean(data.trial{1},2);

to get rid of the problem (see attached figure).
But maybe that's because the fieldtrip version I am using is outdated?

In any case, many thanks for the fast and efficient help.

Frederic

 		 	   		  
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