[FieldTrip] TFR with mtmconvol
Jonathan Schubert
jonathan.schubert at uni-hamburg.de
Fri Oct 19 13:23:09 CEST 2012
Dear all,
I have a question regarding frequency analysis using the multitaper
approach. I transformed my data using the following code:
cfg = [];
cfg.channel = 'all';
cfg.output = 'pow';
cfg.method = 'mtmconvol';
cfg.foi = 40:1:100;
cfg.toi = -1.0:0.02:1.0;
cfg.t_ftimwin = 7./cfg.foi;
cfg.tapsmofrq = cfg.foi*0.4;
cfg.pad = 'maxperlen';
cfg.keeptrials = 'no';
freq = ft_freqanalysis(cfg, data);
When I plot the TFR it looks strange in a similiar way to what I found on
the fieldtrip homepage:
http://fieldtrip.fcdonders.nl/faq/why_does_my_tfr_look_strange
Following the help on the homepage did not improve the outcome. I attached
an example of my TFR.
What can I do to improve the outcome of the frequency analysis?
Best,
Jonathan
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