[FieldTrip] time-frequeny analysis task vs resting
tmadsen at emory.edu
Mon Dec 12 17:58:11 CET 2016
As far as I know, I don't think there is a way currently built into
FieldTrip to adjust all experimental trials by the same separate baseline
period, but it is something I also prefer to do, since my pre-trial
"baselines" change across conditioning in my behavioral paradigm. I've
written a custom function to perform this on my data, and it is part of the
code I'm offering to share in the email I just sent out asking another
question that relates to baseline correction and other issues. Are you
On Mon, Dec 12, 2016 at 12:47 AM, Lorena Santamaria Covarrubias <
lorenalsc at hotmail.com> wrote:
> Hi Matt,
> Thank you for you reply Matt.
> I am working with ECoG. The tasks that participants have to perform is
> movements of hand and tongue, indicated by a visual stimuli.
> Five repetitions each motor task followed by a fixation cross on the
> screen and then the next motor task, in a random order.
> Resting state were recorded prior to the motor tasks during 5 minutes were
> participants has to look to a fixation cross and not perform any movement.
> If you need any other information please let me know.
> Thank you.
> *De:* fieldtrip-bounces at science.ru.nl <fieldtrip-bounces at science.ru.nl>
> en nombre de Matt Gerhold <matt.gerhold at gmail.com>
> *Enviado:* lunes, 12 de diciembre de 2016 5:26
> *Para:* FieldTrip discussion list
> *Asunto:* Re: [FieldTrip] time-frequeny analysis task vs resting
> 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.
> 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.
>> fieldtrip mailing list
>> fieldtrip at donders.ru.nl
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
Teresa E. Madsen, PhD
Division of Behavioral Neuroscience and Psychiatric Disorders
Yerkes National Primate Research Center
Rainnie Lab, NSB 5233
954 Gatewood Rd. NE
Atlanta, GA 30329
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