Undefined function or variable "sens"

[Vladimir Litvak]

Do you actually have electrode positions somewhere in your data? They
are not usually supposed to get there by themselves so unless you
somehow got them there (like read in a file with sensor positions),
they are indeed missing. For statistics you don't actually need sensor
positions You can specify the neighborhood relations 'by hand' instead
of calling neighbourselection.

Best,

Vladimir

On Thu, Jul 3, 2008 at 3:05 PM, A. Stolk <A.Stolk at ewi.utwente.nl> wrote:
> Dear fieldtrippers,
>
> While performing statitstical analysis on time-frequency EEG data, I get the following error:
>
> ??? Undefined function or variable "sens".
> Error in ==> neighbourselection at 106
> if ~isstruct(sens)
> Error in ==> statistics_wrapper at 226
>    cfg.neighbours = neighbourselection(cfg,varargin{1});
> Error in ==> freqstatistics at 132
> [stat] = statistics_wrapper(cfg, varargin{:});
> Error in ==> fieldtripstatanalyse at 70
> [stat] = freqstatistics(cfg, stimulusFFT, baselineFFT);
>
> The neighbourselection function tells:
>
> if ~isstruct(sens)
>
> error('Did not find gradiometer or electrode information.');
>
>
>
> which gets its data by:
>
> % Revision 1.6 2006/07/12 14:14:59 roboos
>
> % get sens from data.grad/elec
>
>
>
> I get this error on several matlab and fieldtrip versions. Any suggestions how to solve this?
>
>
>
> Regards,
>
> Arjen Stolk
>
>
>
> ----------------------------------
> The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.
>
>

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.