[FieldTrip] How to obtain all trials data?

[Stephen Politzer-Ahles]

Hello Reo,

What was the format of the timelock data structure you supplied to
ft_sourceanalysis()? i.e., when you called ft_timelockanalysis() to create
the timelock structure earlier, did you also use cfg.keeptrials='yes'
there? If not, then your timelock structure would be an average (rather
than all trials), and thus the source data you get would also be averaged
across trials.

Best,
Steve



---
Stephen Politzer-Ahles
University of Oxford
Language and Brain Lab, Faculty of Linguistics, Phonetics & Philology
http://users.ox.ac.uk/~cpgl0080/



>
> Message: 3
> Date: Wed, 04 Nov 2015 23:15:50 +0000
> From: Reo Inoue <inouereo0406 at gmail.com>
> To: fieldtrip at science.ru.nl
> Subject: [FieldTrip] How to obtain all trials data?
> Message-ID: <1446678950846-66347c9d-4c1fc339-4b7068ac at mixmax.com>
> Content-Type: text/plain; charset="us-ascii"; Format="flowed"
>
> Dear all,
>
> I use function; ft_sourceanalysis following. [source] =
> ft_sourceanalysis(cfg, timelock)
> And I want to obtain the all trials data, not average. But I could not
> understand why i obtain the average. My config is following. Are there any
> problems?
> cfg=[]; cfg.method = 'eloreta'; cfg.jackknife = 'no';%'no' or 'yes'
> jackknife resampling of trials
> cfg.pseudovalue = 'no';%'no' or 'yes' pseudovalue resampling of trials
> cfg.bootstrap = 'no';%'no' or 'yes' bootstrap resampling of trials
> cfg.numbootstrap = 1;%%number of bootstrap replications (e.g. number of
> original trials) cfg.keeptrials='yes'; cfg.vol =vol; %structure with
> volume conduction model, see FT_PREPARE_HEADMODEL cfg.elec =elec;%structure
> with electrode positions, see FT_DATATYPE_SENS [source{SouInd,1}] =
> ft_sourceanalysis(cfg,timelock);
>
>
> Thanks a lot in advance,
> All the best,
>
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