[Eeglablist] Plotting ERSP condition differences in STUDY

[Burcu Ayşen Ürgen]

Dear Arno and eeglablist,

Once the ERSP condition differences are plotted, is there also a way to
mask the difference plot with the significant values (e.g. p<0.05 FDR
corrected)?

Thanks,

Burcu

On Mon, Feb 25, 2013 at 9:07 PM, Arnaud Delorme <arno at ucsd.edu> wrote:

> Dear Pete,
>
> something like this could help for single channels
>
> [STUDY ersp times freqs] = std_erspplot(STUDY,ALLEEG, 'channels',{'OZ'});
> erspDiff = ersp{2}-ersp{1};
> erspDiff = mean(erspDiff, 4); % average across subjects
> figure; tftopo(erspDiff, times, freqs);
>
> For scalp topographies
>
> chanlocs = eeg_mergelocs(ALLEEG.chanlocs);
> [STUDY ersp times freqs] = std_erspplot(STUDY,ALLEEG, 'channels',{
> chanlocs.labels }, 'topotime', [200 400], 'topofreq', [8 12]);
> erspDiff = ersp{2}-ersp{1};
> erspDiff = mean(erspDiff, 4);
> figure; topoplot(erspDiff, chanlocs);
>
> Best,
>
> Arno
>
> On 25 Feb 2013, at 18:39, Makoto Miyakoshi wrote:
>
> Dear Pete,
>
> This is what I wrote 5 days ago for a similar question to the list. I hope
> this helps.
>
> %%%%%%%%%%%%%%%%%%%%
> If you don't mind doing a little hack here is description of how to do it.
> Here I show you the case of ICA-based clustering, not channel, but they
> should be more or less the same I guess (I hope).
>
> 1. Plot 'Edit/plot clusters.'
> 2. Show all ERSPs.
> 3. Close it by pressing 'ok'. This updates your STUDY.
> 4. You should be able to find STUDY.cluster(1,x).icaerspwhich is a cell
> that contains group x condition data (each of them have the size of
> frequency x timepoint).
> 5. You select pick them up to calculate subtraction. You can also find
> frequency and time scales there.
> 6. FYI to plot time-frequency plot use 'imagesc(); axis xy'.
>
> Sorry I can't provide exactly matched information. If you find this method
> does not help much let me know.
> %%%%%%%%%%%%%%%%%
>
> Maybe I should write a little plug-in for this. Sorry for this apparent
> inconvenience.
>
> Makoto
>
> 2013/2/25 Pete Manza <pete.manza at gmail.com>
>
>> Hello all,
>>
>> I know there have been several posts on this but I haven't been able to
>> make sense of how to proceed with my own code, as I'm not an experienced
>> MATLAB user.
>>
>> I was wondering if anyone would be willing to share some code for
>> plotting the ERSP subtraction of conditions (i.e., Condition A - Condition
>> B): at the single channel level and if possible, for scalp maps of the
>> difference also.  (And, if it's necessary, code for precomputing the
>> difference -- do you have to precompute the difference first in order to
>> plot it?  There was some disagreement in one of the older threads I had
>> seen.)
>>
>> I'm working within a STUDY design.  I'm not using ICA-based clusters,
>> just channels.
>>
>> Thanks very much for the help!
>> Pete Manza
>> Stony Brook University
>>
>> _______________________________________________
>> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
>> To unsubscribe, send an empty email to
>> eeglablist-unsubscribe at sccn.ucsd.edu
>> For digest mode, send an email with the subject "set digest mime" to
>> eeglablist-request at sccn.ucsd.edu
>>
>
>
>
> --
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>
>
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>



-- 
Burcu Aysen Urgen, PhD candidate
Department of Cognitive Science
University of California, San Diego

Email: burgen at cogsci.ucsd.edu
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20130228/4b032f2f/attachment.html>