[FieldTrip] Problems with ft_channelrepair

[Gema Mijancos]

El El mié, 14 abr 2021 a las 17:55, Gema Mijancos <gemamm98 at gmail.com>
escribió:

> Dear community,
>
>
> My name is Gema Mijancos Martínez and I am working at UPC (Univeristat
> Politècnica de Catalunya). Currently we are analysing TMS-EEG signals.
>
> I have a bad channel that I would like to repair, using ft_channelrepair.
>
>
> This is the code that I used:
>
> *cfg = [];*
> *cfg.channel = **'all'*
> *cfg.method = **'distance'**;*
> *cfg.layout = **'elec1010'**;*
> *cfg.neighbourdist = 10;*
> *neighbours = ft_prepare_neighbours(cfg, data_tms_raw_sim);*
>
> *cfg = [];*
> *cfg.method = **'weighted'**;*
> *cfg.badchannel = **'C1'*
> *; cfg.neighbours = neighbours;*
> *cfg.trials = **'all'**;*
> *interp = ft_channelrepair(cfg, data_tms_raw_sim);*
>
>
>
> As I do have a channel (is not a missing one) I did not include cfg.elec
> into the cfg (because reading the documentation it does not say is
> compulsory to add it). However, I get the following error, which I think is
> related to cfg.elec. I do not understand why I get this error:
>
>
> *Error in ft_channelrepair (line 136)*
>
> *    sens = ft_fetch_sens(cfg, data);*
>
>
> Nevertheless, I decided to include cfg.elec:
>
> *cfg.elec = **'C:\Users\MIJANCOS MARTINEZ 2\Desktop\BECA\MATLAB
> CODE\Scripts\Channel_info_EEG_64_sens'**);*
>
> which is a matlab strcutrure containing the label of the channel, their
> position and the position of the electrodes (information needed by
> ft_datatype_sens: sens.lablel, sens.chanpos and sens.elecpos).
>
>
>
> However, when I run this code, I get another error:
>
>
>
> *Error using cell/unique>celluniqueR2012a (line 249)*
>
> *Elements of cell array input A must be character vectors (row vectors of
> class char).*
>
> *Error in cell/unique (line 142)*
>
> *        [varargout{1:nlhs}] =
> celluniqueR2012a(varargin{1},logical(flaginds(1:5)));*
>
> *Error in cell/setdiff>cellsetdiffR2012a (line 303)*
>
> *    uA = unique(a,order);*
>
> *Error in cell/setdiff (line 129)*
>
> *        [varargout{1:nlhs}] =
> cellsetdiffR2012a(varargin{1:2},logical(flaginds(1:3)));*
>
> *Error in ft_channelrepair (line 162)*
>
> *cfg.missingchannel = setdiff(cfg.missingchannel, data.label, 'stable');*
>
> *Error in Preprocessing_TMS_EEG (line 137)*
>
> *    [interp] = ft_channelrepair(cfg, data_tms_raw_sim);*
>
>
> I have read some threads regarding this issue, and one of the solutions
> was to use cfg.layout instead of cfg.elec. Thus, I used the easycap-M10.txt
> available in Fieldtrip/template but I get the same error as before.
>
>
> I would really appreciate if anyone could provide some help in
> understanding why I need to provide cfg.elec (which it is what I need to
> do, perhaps I am wrong in my initial assumption) and why I am getting the
> errors that I just mentioned.
>
>
> Best regards,
>
>
> Gema Mijancos
>
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