[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
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,
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