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

[woun zoo]

Thank you so much. ^_^;;


On Fri, Oct 11, 2013 at 2:46 PM, Constantino Méndez Bértolo <
constantino.mendezbertolo at ctb.upm.es> wrote:

> 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.
>>>
>>> _______________________________________________
>>> fieldtrip mailing list
>>> fieldtrip at donders.ru.nl
>>> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>>>
>>
>>
>>
>> --
>> 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
>
>
>
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
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