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

[Stephen Whitmarsh]

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);
>>
>>
>>
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>
>
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