[FieldTrip] Statistics on ratio frequencies

[Marco Rotonda]

Sorry guys I attach the script I used:

cfg = [];
cfg.method     = 'mtmfft';
cfg.taper  = 'hanning';
cfg.foi        = [4:1:8];
freqmw1theta  = ft_freqanalysis(cfg, mw1);
freqmw2theta  = ft_freqanalysis(cfg, mw2);
freqmw3theta  = ft_freqanalysis(cfg, mw3);
freqmw4theta  = ft_freqanalysis(cfg, mw4);
freqmw5theta  = ft_freqanalysis(cfg, mw5);
freqmw6theta  = ft_freqanalysis(cfg, mw6);
freqmw7theta  = ft_freqanalysis(cfg, mw7);
freqmwe1theta  = ft_freqanalysis(cfg, mwe1);
freqmwe2theta  = ft_freqanalysis(cfg, mwe2);
freqmwe3theta  = ft_freqanalysis(cfg, mwe3);
freqmwe4theta  = ft_freqanalysis(cfg, mwe4);
freqmwe5theta  = ft_freqanalysis(cfg, mwe5);
freqmwe6theta  = ft_freqanalysis(cfg, mwe6);
freqmwe7theta  = ft_freqanalysis(cfg, mwe7);


cfg = [];
cfg.method     = 'mtmfft';
cfg.taper  = 'hanning';
cfg.foi        = [8:1:12];
freqmw1alpha  = ft_freqanalysis(cfg, mw1);
freqmw2alpha  = ft_freqanalysis(cfg, mw2);
freqmw3alpha  = ft_freqanalysis(cfg, mw3);
freqmw4alpha  = ft_freqanalysis(cfg, mw4);
freqmw5alpha  = ft_freqanalysis(cfg, mw5);
freqmw6alpha  = ft_freqanalysis(cfg, mw6);
freqmw7alpha  = ft_freqanalysis(cfg, mw7);
freqmwe1alpha  = ft_freqanalysis(cfg, mwe1);
freqmwe2alpha  = ft_freqanalysis(cfg, mwe2);
freqmwe3alpha  = ft_freqanalysis(cfg, mwe3);
freqmwe4alpha  = ft_freqanalysis(cfg, mwe4);
freqmwe5alpha  = ft_freqanalysis(cfg, mwe5);
freqmwe6alpha  = ft_freqanalysis(cfg, mwe6);
freqmwe7alpha  = ft_freqanalysis(cfg, mwe7);

cfg = [ ];
cfg.parameter  = 'powspctrm';
cfg.avgoverfreq  = 'yes';
amw1 = ft_selectdata_new(cfg, freqmw1alpha);
amw2 = ft_selectdata_new(cfg, freqmw2alpha);
amw3 = ft_selectdata_new(cfg, freqmw3alpha);
amw4 = ft_selectdata_new(cfg, freqmw4alpha);
amw5 = ft_selectdata_new(cfg, freqmw5alpha);
amw6 = ft_selectdata_new(cfg, freqmw6alpha);
amw7 = ft_selectdata_new(cfg, freqmw7alpha);
amwe1 = ft_selectdata_new(cfg, freqmwe1alpha);
amwe2 = ft_selectdata_new(cfg, freqmwe2alpha);
amwe3 = ft_selectdata_new(cfg, freqmwe3alpha);
amwe4 = ft_selectdata_new(cfg, freqmwe4alpha);
amwe5 = ft_selectdata_new(cfg, freqmwe5alpha);
amwe6 = ft_selectdata_new(cfg, freqmwe6alpha);
amwe7 = ft_selectdata_new(cfg, freqmwe7alpha);
tmw1 = ft_selectdata_new(cfg, freqmw1theta);
tmw2 = ft_selectdata_new(cfg, freqmw2theta);
tmw3 = ft_selectdata_new(cfg, freqmw3theta);
tmw4 = ft_selectdata_new(cfg, freqmw4theta);
tmw5 = ft_selectdata_new(cfg, freqmw5theta);
tmw6 = ft_selectdata_new(cfg, freqmw6theta);
tmw7 = ft_selectdata_new(cfg, freqmw7theta);
tmwe1 = ft_selectdata_new(cfg, freqmwe1theta);
tmwe2 = ft_selectdata_new(cfg, freqmwe2theta);
tmwe3 = ft_selectdata_new(cfg, freqmwe3theta);
tmwe4 = ft_selectdata_new(cfg, freqmwe4theta);
tmwe5 = ft_selectdata_new(cfg, freqmwe5theta);
tmwe6 = ft_selectdata_new(cfg, freqmwe6theta);
tmwe7 = ft_selectdata_new(cfg, freqmwe7theta);

atmw1 = amw1;
atmw2 = amw2;
atmw3 = amw3;
atmw4 = amw4;
atmw5 = amw5;
atmw6 = amw6;
atmw7 = amw7;
atmwe1 = amwe1;
atmwe2 = amwe2;
atmwe3 = amwe3;
atmwe4 = amwe4;
atmwe5 = amwe5;
atmwe6 = amwe6;
atmwe7 = amwe7;

atmw1.powspctrm = amw1.powspctrm./tmw1.powspctrm;
atmw2.powspctrm = amw2.powspctrm./tmw2.powspctrm;
atmw3.powspctrm = amw3.powspctrm./tmw3.powspctrm;
atmw4.powspctrm = amw4.powspctrm./tmw4.powspctrm;
atmw5.powspctrm = amw5.powspctrm./tmw5.powspctrm;
atmw6.powspctrm = amw6.powspctrm./tmw6.powspctrm;
atmw7.powspctrm = amw7.powspctrm./tmw7.powspctrm;
atmwe1.powspctrm = amwe1.powspctrm./tmwe1.powspctrm;
atmwe2.powspctrm = amwe2.powspctrm./tmwe2.powspctrm;
atmwe3.powspctrm = amwe3.powspctrm./tmwe3.powspctrm;
atmwe4.powspctrm = amwe4.powspctrm./tmwe4.powspctrm;
atmwe5.powspctrm = amwe5.powspctrm./tmwe5.powspctrm;
atmwe6.powspctrm = amwe6.powspctrm./tmwe6.powspctrm;
atmwe7.powspctrm = amwe7.powspctrm./tmwe7.powspctrm;

cfg_neighb        = [];
cfg_neighb.method = 'distance';
neighbours        = ft_prepare_neighbours(cfg_neighb, mwe1);


ntrials = 7;
cfg = [];
cfg.method      = 'montecarlo';
cfg.statistic   = 'depsamplesT';
cfg.parameter   = 'powspctrm';
cfg.correctm    = 'cluster';
cfg.template = 'easycapM11_neighb.mat';
cfg.neighbours    = neighbours;
cfg.numrandomization = 5000;
cfg.avgoverfreq = 'yes';
cfg.alpha       = 0.05;
cfg.tail        = 0;
design = [ones(1,ntrials) ones(1,ntrials)*2];
cfg.design = design;
cfg.uvar        = 1;
cfg.ivar        = 2;

statat = ft_freqstatistics(cfg, atmwe1, atmwe2, atmwe3, atmwe4, atmwe5,...
    atmwe6, atmwe7, atmw1, atmw2, atmw3, atmw4, atmw5,...
    atmw6, atmw7);



the error I have is:
Undefined function or variable "param".

Error in seloverdim (line 57)
for i = 1:numel(param)

Error in ft_selectdata_old (line 601)
    if selectfoi,  data = seloverdim(data, 'freq', selfoi,  fb); end

Error in ft_selectdata (line 45)
  [varargout{1:nargout}] = ft_selectdata_old(varargin{:});

Error in ft_freqstatistics (line 245)
    data =  ft_selectdata(data, 'param', cfg.parameter, 'avgoverrpt', false,
    ...


hope is more clear


On 2 April 2014 12:42, jan-mathijs schoffelen
<jan.schoffelen at donders.ru.nl>wrote:

> Not if you don't provide us with some more input.
> Jan-Mathijs
>
> On Apr 2, 2014, at 12:31 PM, Marco Rotonda wrote:
>
> Hi all,
> I would like to compute a simple alpha-theta ratio and do some statistics
> on it.
> I had my data from freqanalysis.
> Then I averaged with selectdata_new to have the mean for a band.
> Then the simple ratio for each channel.
> If now I call freqstatistics I have an error.
> Any suggestion?
>
> Thanks
>
> Marco
> _______________________________________________
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> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
>
> Jan-Mathijs Schoffelen, MD PhD
>
> Donders Institute for Brain, Cognition and Behaviour,
> Centre for Cognitive Neuroimaging,
> Radboud University Nijmegen, The Netherlands
>
> Max Planck Institute for Psycholinguistics,
> Nijmegen, The Netherlands
>
> J.Schoffelen at donders.ru.nl
> Telephone: +31-24-3614793
>
> http://www.hettaligebrein.nl
>
>
> _______________________________________________
> fieldtrip mailing list
> fieldtrip at donders.ru.nl
> http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>
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