clusterstats empty cfg.neighbours, cfg.neighbours example
chesharm at STANFORD.EDU
Thu Mar 4 17:15:31 CET 2010
And also, what should the channeighbstructmat look like when doing freq_time
clustering? When I do the fix mentioned above, it returns a 2x2 matrix of
zeros, which causes problems in findcluster(). I've read over the
neighbourselection(), but it doesn't give any clues for freq_time
On Thu, Mar 4, 2010 at 7:51 AM, Chetan Sharma <chesharm at stanford.edu> wrote:
> I am still running into bugs when doing the freq_time clustering. I am
> testing for coherence between the hemispheres during a task, and now it runs
> into problems at clusterstat() at line 175. The command is:
> posclusobs = findcluster(reshape(postailobs,
> The problem is that postailobs has size [nfreq*ntime, 1], while the cfg.dim
> is [nchan nfreq ntime], where nchan=2 in this case. It seems like it wants
> to reshape it into size [nfreq, ntime, 1]. Is this indeed the case?
> And could someone help me out by explaining a bit more about when one would
> choose for cfg.clusterthreshold the different values,
> 'nonparametric_common', 'nonparametric_individual', and 'parametric' when
> testing for coherence in different brain areas? I have read over the
> documentation and the code but am still somewhat unsure.
> Thank you for the help,
> On Thu, Mar 4, 2010 at 6:13 AM, Andrea Ostendorf <aostendorf at besa.de>wrote:
>> Dear Roemer,
>> thanks. Yes, this helps.
>> >I don't know why you want to edit cfg.channel though.
>> Sorry, I just meant that I have to specify the channels which I want to
>> to ft_freqstatistics.
>> All the best
>> 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
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/neuroimaging/fieldtrip.
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