[FieldTrip] time-frequeny analysis task vs resting

Matt Gerhold matt.gerhold at gmail.com
Mon Dec 12 06:26:22 CET 2016


What do your tasks entail? Can you provide more specific details regarding
your experimental design? That will help clarify what the best analytical
work-flow will be in your case.

Matt

On Mon, Dec 12, 2016 at 3:37 AM, Lorena Santamaria Covarrubias <
lorenalsc at hotmail.com> wrote:

> Good morning,
>
>
> I am new in this topic and I have a basic question about baseline
> correction (ft_freqbaseline) when I am trying to study the time frequency
> analysis of task versus resting period.
>
>
> I have two data-sets, one with the tasks information, 64 channels x 1s
> epoch x 100 trials (50 trials task1 and 50 trials task2)  and then 5
> minutes of continuous recording for resting state.
>
> I obtained the power spectrum for both tasks:
>
>
> cfg              = [];
> cfg.output = 'pow';
> cfg.method  = 'tfr';
> cfg.foi          =  8:1:130;
> cfg.toi          =  0.3:0.01:1.3;
> cfg.keeptrials   = 'no';
>
> cfg.trials = find(epoch_data.trialinfo == 1);
> Task1Spec= ft_freqanalysis(cfg,epoch_data);
>
> cfg.trials = find(epoch_data.trialinfo == 2);
> Task2Spec = ft_freqanalysis(cfg,epoch_data);
>
> But now I don't know how to do the baseline correction with the 5 minutes
> continuous data to can compare the power spectrum of both tasks in relation
> to the resting state.
>
> Maybe I missing something pretty basic, apologies in advance for it if
> this is the case.
>
> Any suggestions will be appreciated.
>
> Thanks!!
>
>
>
>
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