[FieldTrip] using ft_topoplotER to plot selected FFT peak amplitudes over scalp?

["Jörn M. Horschig"]

Hi Marek,

it should work like this:

/cfg = [];
cfg.layout = 'XXX.lay';
cfg.xlim = [18 22];
cfg.zlim = 'maxabs';
figure;
ft_topoplotER(cfg, fft1);/

Note that /cfg.xlim /needs to be a vector with two elements.

Best,
Jörn


On 2/14/2013 2:14 PM, marek wrote:
> Dear all,
>
> Is it possible to use ft_topoplotER to draw selected frequency peaks
> over scalp after FFT analysis?
>
> I did frequency analysis of EEG signal in the range 3-42 Hz with the
> following settings:
> cfg              = [];
> cfg.output       = 'pow';
> cfg.channel      = 'all';
> cfg.method       = 'mtmfft';
> cfg.taper        = 'hanning';
> cfg.trials     = 'all';
> cfg.keeptrials = 'no';
> cfg.foilim     = [3 42];
> fft1 = ft_freqanalysis(cfg, avg1);
>
> I would like to draw a scalp distribution of FFT peaks for, say 20 Hz.
> (I've got _only_ frequency domain data).
>
> Is it possible to do it with with the ft_topoplotER function? What
> settings are needed?
> I tried it using cfg.ylim nor cfg.xlim parameters but they do not seem
> to be related to the parameter (the frequency selection) I try to
> manipulate.
>
> Any help will be greatly appreciated!
>
> Best,
> Marek
>
> Psychophysiology Laboratory,
> Jagiellonian University, Krakow (PL)
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip


-- 
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team

P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands

Contact:
E-Mail: jm.horschig at donders.ru.nl
Tel:    +31-(0)24-36-68493
Web: http://www.ru.nl/donders

Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands

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