[FieldTrip] ft_freqanalysis and optimal parameters for higher frequency
Grazia Di Pisa
g.dipisa at gmail.com
Thu Sep 3 19:28:13 CEST 2015
Hi all,
I’m doing time-frequency analysis based on multitapers since I’m trying to analyse activity in the gamma band frequency from 30 to 80 Hz.
I’m getting some strange plots and from the tutorial I don’t understand how to optimally choose some parameters, in particular for cfg.t_ftimwin and cfg.tapsmofrq.
Currently, I’m using the following:
cfg = [];
cfg.output = 'pow';
cfg.channel = 'EEG';
cfg.method = 'mtmconvol';
cfg.toi = [-1.0 : 0.05 : 2.5];
cfg.foi = [30:2:80];
cfg.t_ftimwin = 5./cfg.foi;
cfg.tapsmofrq = 0.4*cfg.foi;
Sorry for the very basic question, but I’m a beginner so some explanations and suggestions would be really helpful!
Thanks in advance,
~ grazia
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20150903/ddb85dd9/attachment-0001.html>
More information about the fieldtrip
mailing list