[Eeglablist] [EEGglablist]Extract unknown waveforms from EEG signal
sunil bn
sbn1984 at gmail.com
Sun Oct 19 01:20:35 PDT 2008
Dear list,
I have used only one channel to record EEG signal from a mice. I'm trying to
analyse the waveform of EEG signal but this data contains different noise
signals as well(EOG,EMG,power line noise,ECG). How do i extract these
signals using EEGlab?Also i should store these extracted signals to study
their behaviour.I referred the manual as well but could not extract the
signals.
Could someone help me in this regard and send the procedure involved.
Thanks in advance
Sunil B N
On Sat, Oct 18, 2008 at 2:17 AM, <eeglablist-request at sccn.ucsd.edu> wrote:
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> Today's Topics:
>
> 1. compare different electrode setups (Nikolay Novitskiy)
> 2. comparing condition and group ERP's from a STUDY
> (Hamish INNES-BROWN)
> 3. EEGLAB tutorial on Frequency analysis/EROs in ERPs
> (Deirdre von Pechmann)
> 4. Re: how to interpolate bad electrodes (Adrian Willoughby)
> 5. 1-year postdoctoral position (Hartmut Leuthold)
> 6. manuals/docs Nihon Kohden EEG system (Michael Wenger)
>
>
> ---------- Forwarded message ----------
> From: Nikolay Novitskiy <nikolai.novitski at gmail.com>
> To: eeglablist at sccn.ucsd.edu
> Date: Mon, 13 Oct 2008 17:45:00 +0200
> Subject: [Eeglablist] compare different electrode setups
> Dear list,
>
> I want to compare and eventually to grand average the data recorded in
> different subjects in the identical conditions, software and almost the same
> hardware (from Brain Products), except that the electrodes schemes are
> different. Can I extrapolate them to a virtual electrodes scheme (I believe
> this is how it is done in BESA)? Or maybe other solutions?
> Thanks in advance.
>
> Yours,
> Nikolai Novitski
>
>
> ---------- Forwarded message ----------
> From: "Hamish INNES-BROWN" <HINNES-BROWN at bionicear.org>
> To: <eeglablist at sccn.ucsd.edu>
> Date: Tue, 14 Oct 2008 16:35:09 +1100
> Subject: [Eeglablist] comparing condition and group ERP's from a STUDY
>
> Hi EEGLAB list.
>
> I'm currently trying to track down the source of a problem i have plotting
> condition and group ERP's from the STUDY channel measures menu.
>
> I have all the 'group' and 'condition' data loaded into the EEG.group and
> EEG.condition. The correct group and condition numbers pop up in the study
> info window when all the subjects are loaded into the study.. In EEG.group
> and EEG.condition the values are strings (but numerals). I have groups '1'
> and '2', and conditions '111' and '122'.
>
> The study looks like this
> >> STUDY
> STUDY =
> name: 'Study1'
> datasetinfo: [1x58 struct]
> cluster: [1x1 struct]
> changrp: [1x63 struct]
> task: ''
> notes: ''
> filename: 'STUDY_ALL.study'
> filepath: 'D:\_PROJECTS\_FB\_ANALYSIS\__EEGLAB\SET\08STUDY_ALL\'
> history: [1x3126 char]
> subject: {1x29 cell}
> group: {'1' '2'}
> session: []
> condition: {'111' '122'}
> setind: [2x29 double]
> etc: [1x1 struct]
> preclust: [1x1 struct]
> saved: 'yes'
>
> Now, when plotting the channel measures, I select "plot conditions on the
> same panel", and get two plots as expected. The first (group '1') has two
> lines, as expected. One is labelled '111' and the other '122'. All OK.
> However underneath there is an empty plot, labelled '2', but with no lines.
>
> I thought this might be somehow a fault in my data or the way the
> conditions and groups are entered (maybe they should be numbers, not
> strings?) so I tried loading the example data (5subjects.zip), and added a
> group variable. Same problem however.
>
> Anyone had any luck with this before?
>
> Many thanks
>
>
>
> *Hamish Innes-Brown*
> Senior Research Officer
>
> The Bionic Ear Institute
> Auditory Clinical Neuroscience Unit
> c/o St Vincents Hospital
> 6th Floor Daly Wing,
> 35 Victoria Pde, Fitzroy Vic 3065
> Tel: +61 3 9288 3523
> Fax: +61 3 6997 7518
>
>
> ---------- Forwarded message ----------
> From: "Deirdre von Pechmann" <Dvonpechman at harthosp.org>
> To: <eeglablist at sccn.ucsd.edu>
> Date: Wed, 15 Oct 2008 10:53:50 -0400
> Subject: [Eeglablist] EEGLAB tutorial on Frequency analysis/EROs in ERPs
> Dear eeglablist,
>
> I am trying to find some literature on Frequency Analysis using EEGLAB,
> specifically Event Related Oscillations using ERPs. I am interested in
> finding out more on the methodology used, how to prepare the EEG data and
> what analytic choices have been used, e.g bandpass filter etc..
>
> Any information would be great, thank you for your help,
>
> Deirdre
>
>
>
> *******************************************************************
>
> Deirdre Foxe von Pechmann
> ERP Lab Manager
> Olin Neuropsychiatry Research Center
> Whitehall Building
> 200 Retreat Ave.
> Hartford, CT 06106
> Tel: (860) 545 7798
> Fax: (860) 545 7797
> email: dvonpechman at harthosp.org
> www.nrc-iol.org
>
>
>
>
>
>
> ---------- Forwarded message ----------
> From: "Adrian Willoughby" <awilloug at gmail.com>
> To: "Bradley Voytek" <semiconscious at gmail.com>, "Sebastian Korb" <
> Sebastian.Korb at pse.unige.ch>, eeglablist at sccn.ucsd.edu
> Date: Thu, 16 Oct 2008 11:41:12 +0100
> Subject: Re: [Eeglablist] how to interpolate bad electrodes
> Hi,
>
> I get the same error message, even with the electrode locations
> loaded. Are there an other potential solutions out there? Any help
> anyone can offer would be greatly appreciated.
>
> Many thanks,
>
> Adrian
>
>
>
> On Fri, Sep 12, 2008 at 9:49 PM, Bradley Voytek <semiconscious at gmail.com>
> wrote:
> > Sebastian:
> >
> > In order for the interpolation to work correctly, you need to have the
> > electrode positions. My guess is that you don't have that. You can
> > load default 10-20 electrode locations through the eeglab GUI by
> > selecting edit > channel locations > look up locs.
> >
> > ::brad
> >
> > On Fri, Sep 12, 2008 at 8:28 AM, Sebastian Korb
> > <Sebastian.Korb at pse.unige.ch> wrote:
> >> Dear eeglabbers,
> >>
> >> I would like to interpolate noisy electrodes (they are thus not missing
> in
> >> the chanlocs file) using the eeg_interp function.
> >> I thought that the best thing to do would be to first try with the
> tutorial
> >> dataset (eeglab_data.set).
> >> However, even then I am unable to use the function correctly and
> constantly
> >> get an error message.
> >>
> >> EEG = eeg_interp(EEG, 14); %that 's what I've entered in matlab, to
> >> interpolate the electrode n.14 (Cz)
> >>
> >>
> >> %and here comes what I got:
> >>
> >> Points (/30720):??? Error using ==> griddata at 50
> >>
> >> X and Y must be same length as Z or the lengths
> >>
> >> of X and Y must match the size of Z.
> >>
> >> Error in ==> eeg_interp at 185
> >>
> >> [Xi,Yi,badchansdata(:,t)] = griddata(ygood, xgood ,
> >> tmpdata(:,t)',...
> >>
> >>
> >> As I am new to eeglab, I tried replacing the 'EEG' in the brackets by
> the
> >> index of the dataset (e.g. 1), or even by the name of the dataset
> >> ('Continuous EEG Data epochs').
> >> The result was not better though.
> >>
> >> Could anybody please help me to resolve this problem?
> >> Thank you very much in advance.
> >> Regards,
> >>
> >> Sebastian Korb
> >>
> >>
> >> _______________________________________________
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>
>
> ---------- Forwarded message ----------
> From: Hartmut Leuthold <h.leuthold at psy.gla.ac.uk>
> To: eeglablist at sccn.ucsd.edu
> Date: Thu, 16 Oct 2008 18:01:21 +0100
> Subject: [Eeglablist] 1-year postdoctoral position
>
> A one-year postdoctoral position (£ 25,013 - £28,153; REF 14669/DPO/A3) is available at the Centre for Cognitive Neuroimaging, Department of Psychology, University of Glasgow, Scotland, UK. This post is available *from November 2008*.
>
> Applications are invited to work with Professor Anthony Sanford and Dr.
> Hartmut Leuthold on a project investigating the nature of shallow processing
> using EEG measures and a number of analytic techniques (ERPs,
> time-frequency). You will assist in the planning and analysis of
> experiments using EEG recording. You will join a team of researchers at
> Glasgow working on this and related topics.
>
> You will hold a good honours degree or equivalent in psychology,
> neuroscience, or a related discipline. Experience with EEG experimentation
> and analysis are essential. Programming skills (e.g. Matlab) and knowledge
> of analysis software packages (e.g., BESA, EEGLAB, Fieldtrip) are an
> advantage.
>
> For further details contact Prof. Sanford (+44(0)141 330 4058;
> a.sanford at psy.gla.ac.uk) or Dr. Leuthold (+44(0)141 330 6847;
> h.leuthold at psy.gla.ac.uk).
>
> Further particulars: see our web site at http://www.psy.gla.ac.uk/jobs.phpor contact Lynda Young, Department of Psychology, University of Glasgow, G12
> 8QQ (+44 (0)141 330 5089, e-mail l.young at psy.gla.ac.uk). *Closing date: 31
> October 2008.
> *
>
> *
> *
> --
>
> Dr Hartmut Leuthold
>
> Associate Editor - Experimental Psychology
>
> Centre for Cognitive Neuroimaging
>
> Department of Psychology
>
> University of Glasgow
>
> 58 Hillhead Street
>
> Glasgow G12 8QB
>
> Scotland, UK
>
> ____________________________
>
> tel +44 (0)141 330 6847
>
> fax +44 (0)141 330 4606
>
> mailto:h.leuthold at psy.gla.ac.uk <h.leuthold at psy.gla.ac.uk>
>
>
> ---------- Forwarded message ----------
> From: "Michael Wenger" <mjw19 at psu.edu>
> To: eeglablist at sccn.ucsd.edu
> Date: Thu, 16 Oct 2008 13:11:43 -0400
> Subject: [Eeglablist] manuals/docs Nihon Kohden EEG system
> All -- we are setting up a small instructional lab and have an old
> Nihon Kohden EEG System (model 4321B) that we'd like to use for
> something other than a doorstop. If anyone has any manuals,
> documentaion, etc., on this or a related system, please contact me
> off-list. My thanks in advance, -Michael
>
> --
> M. J. Wenger, Ph.D.
> Department of Psychology
> Graduate Program in Neuroscience
> Huck Institutes of the Life Sciences
> The Pennsylvania State University
> University Park PA USA 16803
>
> phone: 814.863.6023
> fax: 814.863.7002
> e-mail: mjw19 at psu dot edu
> web: www.personal.psu.edu/mjw19
>
>
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--
Thanks & Regards
Sunil B.N
University Of victoria
British columbia
Victoria
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