[FieldTrip] where can I get complex amplitudes for each trial in ft_freqanalysis?

[Constantino Méndez Bértolo]

Please notice that for the grandaverages is not spelled "individual*s*" but

cfg.keepindividual = 'yes'

without the 's'

My bad,
T


2013/10/11 Constantino Méndez Bértolo <constantino.mendezbertolo at ctb.upm.es>

> Dear Woun,
>
> It is possible you may have already solved the problem. In case you
> didn't, let me tell you that:
> When doing timelocks or freqanalysis at the individual level you can set:
>
>    - cfg.keeptrials = 'yes'
>
>
> and the output structure will have a field with each single trial in
> addition to the "avg" field that you already have.
> At the population level (ft_timelockgrandaverage, ft_freqgrandaverage) the
> analogous option is
>
>    - cfg.keepindividuals = 'yes'
>
> And the resulting structure will have an additional field called
> "individual".
> Keeptrials and keepindividuals are set to "no" by default. When "keeping"
> trials/individuals the output will be much bigger, depending on the number
> of channels, trials, time,... specially for TFanalysis you usually need to
> put an eye on that (load times are faster, space consuming, etc). It may be
> a good habit in order to keep good track of your processing but it can be a
> nuisance too
>  Tip: look at the field "dimord". Now you have: chan_freq_time, what you
> want is having 'rpt_chan_freq_time'. 'rpt' refers to each trial/individual.
> I hope I did not mislead your question. If this small talk actually solved
> your problem, let me suggest you to highlight your fieldtrip functions and
> press F1, and do it often, magic will happen., it will help learning much
> faster.
> Cheers,
> Tino
>
>
> 2013/10/11 woun zoo <instanton at gmail.com>
>
>> Hi
>>
>> I'd like to know the way to keep each trial's time-frequency data
>> (complex amplitude from fourier method). For example, if I have 20 trials
>> and run ft_freqanalysis for time-frequency spectra, I end up having only
>> final averaged result. Where can I see each individual trial's
>> time-frequency complex amplitudes? Or what should I do to have TF data from
>> all single trials?
>>
>> Thank you very much.
>>
>> _______________________________________________
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>>
>
>
>
> --
> Constantino Méndez-Bértolo
> Laboratorio de Neurociencia Clínica, Centro de Tecnología Biomédica (CTB)
>
> Parque Científico y Tecnológico de la UPM, Campus de Montegancedo
>
> 28223 Pozuelo de Alarcón, Madrid, SPAIN
>
>
>


-- 
Constantino Méndez-Bértolo
Laboratorio de Neurociencia Clínica, Centro de Tecnología Biomédica (CTB)

Parque Científico y Tecnológico de la UPM, Campus de Montegancedo

28223 Pozuelo de Alarcón, Madrid, SPAIN
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