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

[cornelius abel]

If it is not working you might also need to define the parameter as:

  cfg.parameter='powspctrm'

Greetings, Cornelius

Am 14.02.2013 14:59, schrieb "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)
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>> fieldtrip at donders.ru.nl  <mailto:fieldtrip at donders.ru.nl>
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>
>
> -- 
> 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  <mailto:jm.horschig at donders.ru.nl>
> Tel:    +31-(0)24-36-68493
> Web:http://www.ru.nl/donders
>
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