[FieldTrip] Cluster-based permutation test (CBPT)

[José Antonio Uriguen Garaizabal]

Thanks a lot Johanna


I actually did that right after posting this question. I had to try a few
of the latest FT distributions, since I was getting some installation
errors. It seems to be working now, but I didn't know how to update the
post.

It can now be closed. I will soon create a new one asking a few details on
the implementation of the permutation based test itself, since I am
comparing it to my own implementation and I find some differences.


Thanks
Jose

2015-07-13 20:30 GMT+02:00 Johanna Zumer <johanna.zumer at gmail.com>:

> Dear Jose,
>
> It appears from lines within the error message that you are using
> Fieldtrip version 20140311.  Is that right?    If you update to the latest
> version, do you still get the error?
> Also, what version of Matlab are you using?
>
> Kind regards,
> Johanna
> On 11 Jul 2015 04:23, "José Antonio Uriguen Garaizabal" <
> jose.uriguen at deusto.es> wrote:
>
>> Dear all
>>
>>
>> I am trying to implement a CBPT to compare data extracted from EEG
>> recordings of a group of patients vs control.
>>
>> In short, I have 19 channels, 10 subjects of each type and 115
>> measurements per channel and subject to be compared. I am trying to find
>> significative differences in a range of measurements (say from the 10th to
>> the 20th) at all/most/some channels, reason why I am trying to use the
>> cluster-based approach.
>>
>> After somehow following the instrunctions in "
>> http://www.fieldtriptoolbox.org/tutorial/cluster_permutation_timelock"
>> for within-subjects experiments I think I have my data properly structured
>> according to FT needs. However, when I run the last part of the code
>> (ft_timelockstatistics) I get the following warning and error:
>>
>> *Warning: Using 'state' to set RAND's internal state causes RAND, RANDI,
>> and RANDN to use legacy random number generators.  This*
>> *syntax will be removed in a future release.  See Updating Your Random
>> Number Generator Syntax to use RNG to replace the old syntax. *
>> *> In rng>handleLegacyStruct at 155*
>> *  In rng at 81*
>> *  In utilities\private\randomseed at 73*
>> *  In utilities\private\ft_preamble_randomseed at 11*
>> *  In ft_preamble at 48*
>> *  In ft_statistics_montecarlo at 110*
>> *  In fieldtrip-20140311\private\statistics_wrapper at 308*
>> *  In ft_timelockstatistics at 108*
>> *  In FT_permTest at 73 *
>> *Error using rng (line 81)*
>> *S must contain generator settings captured previously using S = RNG.*
>>
>> *Error in randomseed (line 73)*
>> *      rng(s);*
>>
>> *Error in ft_preamble_randomseed (line 11)*
>> *ftFuncRandomseed=randomseed(cfg.randomseed);*
>> *Error in ft_preamble (line 48)*
>> *  evalin('caller', ['ft_preamble_' cmd]);*
>>
>> *Error in ft_statistics_montecarlo (line 110)*
>> *ft_preamble randomseed*
>>
>> *Error in statistics_wrapper (line 308)*
>> *    [stat, cfg] = statmethod(cfg, dat, design);*
>>
>> *Error in ft_timelockstatistics (line 108)*
>> *[stat, cfg] = statistics_wrapper(cfg, varargin{:});*
>>
>> *Error in FT_permTest (line 73)*
>> *[stat] = ft_timelockstatistics(cfg, subjN{:}, subjE{:}); *
>>
>>
>> Anyone knows why?
>>
>>
>> Thanks in advance
>>
>> --
>> Jose Antonio Urigüen
>>
>> PostDoc at Deustotech-LIFE (eVIDA Research Group)
>> http://evida.deusto.es/
>>
>> University of Deusto
>> Facultad de Ingeniería, 4ª Planta
>> Avda/Universidades 24. 48007 Bilbao. Spain
>> Mov.- +34 656 711 643 <%2B34%20619%2096%2072%2023>
>>
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>>
>
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-- 
Jose Antonio Urigüen

PostDoc at Deustotech-LIFE (eVIDA Research Group)
http://evida.deusto.es/

University of Deusto
Facultad de Ingeniería, 4ª Planta
Avda/Universidades 24. 48007 Bilbao. Spain
Mov.- +34 656 711 643 <%2B34%20619%2096%2072%2023>
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