[Eeglablist] eeglablist Digest, Vol 91, Issue 9
Piyush Swami
garfieldpiyush at gmail.com
Mon May 7 16:27:55 PDT 2012
Hi Andrea
This electrode location could be made by using eeglab. Just open an higher
channels reference than the one you have employed. Then remove the
locations which you do not want, then reference them accordingly. Save this
as .loc file for future use.
On Tue, May 8, 2012 at 2:20 AM, <eeglablist-request at sccn.ucsd.edu> wrote:
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> Today's Topics:
>
> 1. electrode location (Andrea Helo)
> 2. Re: Automated way of placing events (Andrew Hill)
> 3. STUDY design: spectrum negative power values
> (Christian Scharinger)
> 4. Re: Automated way of placing events (Stephen Politzer-Ahles)
> 5. channel spectra & maps (Schelenz, Patrick David)
>
>
> ---------- Forwarded message ----------
> From: Andrea Helo <andreahelo at gmail.com>
> To: eeglablist at sccn.ucsd.edu
> Cc:
> Date: Mon, 7 May 2012 14:19:27 +0200
> Subject: [Eeglablist] electrode location
>
> Dear list,
> I would like to find an electrode location data for Neuroscan SynAmps-2 128-channel cap
> Please send me if anybody have it.
> Thank you :)
>
>
>
> --
> Andrea
>
>
>
>
> ---------- Forwarded message ----------
> From: Andrew Hill <andrewhill at ucla.edu>
> To: Marco Montalto <montaltomarco at onvol.net>
> Cc: eeglablist at sccn.ucsd.edu
> Date: Sat, 5 May 2012 18:54:39 -0700
> Subject: Re: [Eeglablist] Automated way of placing events
> Marco,
>
> You can do this a lot more easily using ERPLAB's "Bin Operator" to add /
> redefine labels based on conditional logic of event, timing, etc. Check
> out erpinfo.org for the plugin.
>
> The workflow is like this
> - create a "binlist" (list of events in a text file with labels)
> - assign that binlist to a continuous event file
> - epoch the continuous file per the bins assigned, and average to ERPs
> - then you would run conditional code to re-define your bins and apply it
> to the ERP file.
>
> for example:
>
> %add ERPLab event structure
> EEG = pop_creabasiceventlist(EEG, '', {'boundary'}, {-99});
> % "bindesc.txt" contains numeric and text labels for each event
> EEG = pop_binlister( EEG, 'LANT_bindesc.txt', 'no', '', 0, [], [], 0, 0,
> 0);
> %cut continuous file into epoched file - resulting in a single file,
> unlike the epoching of EEGLAB
> EEG = pop_epochbin( EEG , [-1500 1500], [-0.1 0]);; %3-sec epohcs,
> baselined 100 ms pre-stim
> EEG = eeg_checkset( EEG );
> %Create ERPs
> ERP = pop_averager( EEG,1,1,1);
> % difference wave subtraction - you can create new ERPs not in the
> original epochs, here.
> ERP = pop_binoperator( ERP, {'bin10 = bin1 - bin3 labels OrientingCost
> LVF' 'bin11 = bin7 - bin9 labels OrientingCost RVF' });
>
>
>
>
>
>
>
>
>
> ERP = pop_savemyerp(ERP, 'erpname', inputfilename, 'filename',
> [OUTPUTFILEPATH erpfilename]);
>
> Good luck - hope this helps!
>
> Best,
> andrew
>
> On May 5, 2012, at 2:33 PM, Marco Montalto wrote:
>
> Dear List,
>
> In my experiment I have three conditions and each trial is 30 seconds
> long. I ignore the first and last 10 seconds of each block and the middle
> 10-second block I divide into epochs of 2-second duration. Currently I am
> doing this manually through the EEGLAB GUI by placing an event (with the
> same 'type' for blocks from the same condition) at every two seconds (in
> the middle 10-second block) and then extracting epochs around those events.
> Would anyone know whether there is a more automated and a faster way of
> doing this? Thanks in advance.
>
> Regards,
> Marco Montalto
> _______________________________________________
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>
>
>
>
> ---------- Forwarded message ----------
> From: Christian Scharinger <c.scharinger at gmx.net>
> To: eeglablist at sccn.ucsd.edu
> Cc:
> Date: Mon, 07 May 2012 09:56:56 +0200
> Subject: [Eeglablist] STUDY design: spectrum negative power values
> Dear eeglab users,
>
> I use the following code for calculating the spectrum in a STUDY design:
>
> [STUDY ALLEEG] = std_precomp(STUDY, ALLEEG, 'channels', 'design', [1],
> 'erp', 'off', 'spec', 'on', 'ersp', 'off', 'specparams', { 'specmode',
> 'psd', 'recompute', 'on', 'timerange', [1300 1800], 'freqfac', [4] },
> 'savetrials', 'off');
>
> STUDY = pop_specparams(STUDY, 'groupstats','on', 'mcorrect','fdr',
> 'threshold',0.05,'plotgroups',**'together','freqrange',[1 30],
> 'rmsubjmean', 'off');
>
> With this code, I'm getting negative power values when I use the
> std_specplot function for plotting (or when I do the plotting via GUI).
>
> So I guess I'm not getting absolute power values (what I would like to
> have) but power values in relation to some kind of baseline.
>
> Is it possible to get absolute power values for a spectrum in a STUDY
> design?
> Where can I see/change what baseline eeglab uses for calculating power
> values?
>
> Many thanks in advance,
>
> Christian
>
>
>
> --
> Christian Scharinger, M.A.
>
> Knowledge Media Research Center (KMRC)
> Schleichstraße 6 | 72076 Tuebingen
>
> Phone: +49 (0)7071 979-360
> Internet: http://www.iwm-kmrc.de/c.**scharinger<http://www.iwm-kmrc.de/c.scharinger>
> E-Mail: c.scharinger at iwm-kmrc.de
>
>
>
>
> ---------- Forwarded message ----------
> From: Stephen Politzer-Ahles <politzerahless at gmail.com>
> To: Marco Montalto <montaltomarco at onvol.net>
> Cc: eeglablist at sccn.ucsd.edu
> Date: Sat, 5 May 2012 20:38:55 -0500
> Subject: Re: [Eeglablist] Automated way of placing events
> Hi Marco,
>
> I haven't tried this myself, but you should be able to get any of these
> epochs from the same event using pop_epoch. Assuming that you have an event
> marking the beginning of the block, then the first epoch you want (i.e.
> 10-12 seconds after the event) would be
>
> OUTEEG = pop_epoch( EEG, {events}, [10 12]);
>
> the second would be
>
> OUTEEG = pop_epoch( EEG, {events}, [12 14]);
>
> etc.
>
> Best,
> Steve
>
> On Sat, May 5, 2012 at 4:33 PM, Marco Montalto <montaltomarco at onvol.net>wrote:
>
>> Dear List,
>>
>> In my experiment I have three conditions and each trial is 30 seconds
>> long. I ignore the first and last 10 seconds of each block and the middle
>> 10-second block I divide into epochs of 2-second duration. Currently I am
>> doing this manually through the EEGLAB GUI by placing an event (with the
>> same 'type' for blocks from the same condition) at every two seconds (in
>> the middle 10-second block) and then extracting epochs around those events.
>> Would anyone know whether there is a more automated and a faster way of
>> doing this? Thanks in advance.
>>
>> Regards,
>> Marco Montalto
>> _______________________________________________
>> 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
>>
>
>
>
> --
> Stephen Politzer-Ahles
> University of Kansas
> Linguistics Department
> http://www.linguistics.ku.edu/
>
>
> ---------- Forwarded message ----------
> From: "Schelenz, Patrick David" <pschelenz at ukaachen.de>
> To: "eeglablist at sccn.ucsd.edu" <eeglablist at sccn.ucsd.edu>
> Cc:
> Date: Mon, 07 May 2012 12:55:21 +0200
> Subject: [Eeglablist] channel spectra & maps
>
> Hi, ****
>
> ** **
>
> i am looking for help for spectral analysis with EEGlab.****
>
> ** **
>
> I analyzed my data and looked at spectral analysis (plot-> channel spectra
> & maps). ****
>
> Unfortunately I can’t get concrete values to do a statistical analysis.
> Therefore, no comparison between groups is possible. ****
>
> So my question is: how can I get these values? ****
>
> ** **
>
> Greetings****
>
> ** **
>
> Patrick****
>
> _______________________________
>
> Dipl.-biol. Patrick David Schelenz
> Klinik für Psychiatrie, Psychotherapie und Psychosomatik
> Universitätsklinikum der RWTH Aachen
> Pauwelsstr. 30
> 52074 Aachen
> Tel. 0241 - 80 85580****
>
> ** **
>
> _______________________________________________
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--
Piyush Swami
M.Tech Student,
Dept. of Biotechnology & Medical Engineering,
National Institute of Technology, Rourkela, Orissa, India
Mobile No. : +91 7894493382
Alt. mobile No. : +91 9811390388
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