[FieldTrip] keeptrials = 'yes' with DICS does not keep trials

[Elena Orekhova]

Hi Stephen,
I followed the tutorial in http://www.fieldtriptoolbox.org/tutorial/salzburg,
but used 'dics' (see below).
I think that in the example below the  sourceavg.avg.filter was indeed used
and my results look nice.

Elena

cfg=[];cfg.method='lcmv';cfg.grid
<http://www.mathworks.com/access/helpdesk/help/techdoc/ref/grid.html>=grid
<http://www.mathworks.com/access/helpdesk/help/techdoc/ref/grid.html>;cfg.grid
<http://www.mathworks.com/access/helpdesk/help/techdoc/ref/grid.html>.filter
<http://www.mathworks.com/access/helpdesk/help/techdoc/ref/filter.html>=sourceavg.avg.filter
<http://www.mathworks.com/access/helpdesk/help/techdoc/ref/filter.html>;cfg.rawtrial
= 'yes';cfg.vol=hdm;
sourcepreS1=ft_sourceanalysis(cfg, avgpre);
sourcepstS1=ft_sourceanalysis(cfg, avgpst);



On 6 July 2017 at 18:03, Stephen Whitmarsh <stephen.whitmarsh at gmail.com>
wrote:

> Hi Elena!
>
> Thanks! But I do wonder.. did you check whether the common filter
> (specified in the cfg) was used or whether a filter was calculated for each
> trial separately (which does not make sense in my case)?
>
> Best,
> Stephen
>
> On 6 July 2017 at 16:57, Elena Orekhova <orekhova.elena.v at gmail.com>
> wrote:
>
>> Just recently had the same problem.
>> It worked with  cfg.rawtrial='yes'.
>>
>> Best,
>> Elena
>>
>> On 4 July 2017 at 18:03, Stephen Whitmarsh <stephen.whitmarsh at gmail.com>
>> wrote:
>>
>>> Hi everyone,
>>>
>>> I am now trying to use the DICS method for sourceanalysis, with
>>> 'powandcsd' output from ft_freqanalysis as its input and using a
>>> precomputed filter and leadfield. However, I would like to keep my separate
>>> trial estimates in the final source analysis, and while the documentation
>>> suggests I should be able to get that with cfg.keeptrials, but this doesn't
>>> have the expected effect.
>>>
>>> I previously made workaround using PCC on fourier data instead (see
>>> below), I think to deal with this issue. I was wondering if this is still
>>> the recommended option, i.e. workaround? Alternatively, and perhaps
>>> preferably, would someone have a suggestion for a solution consistent with
>>> the DICS implementation?
>>>
>>> Thanks for your time,
>>> Stephen
>>>
>>> % source analysis
>>> cfg.method           = 'pcc';
>>> ...
>>> cfg.keeptrials       = 'yes';
>>> cfg.pcc.keepmom      = 'yes';
>>> cfg.pcc.fixedori     = 'no';
>>> source_control       = ft_sourceanalysis(cfg, FFT);
>>>
>>> and then:
>>>
>>> % project moment and tapers
>>> cfg = [];
>>> cfg.projectmom = 'no';
>>> cfg.keeptrials = 'yes';
>>> cfg.powmethod  = 'lambda1';
>>> source         = ft_sourcedescriptives(cfg,source);
>>>
>>>
>>>
>>> _______________________________________________
>>> fieldtrip mailing list
>>> fieldtrip at donders.ru.nl
>>> https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>>>
>>
>>
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>
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