[Eeglablist] averaging using EEGlab

Tue Feb 11 06:39:05 PST 2014

Hi Akshay,

Hope you are doing good.

If you are not using ERPLAB or the scripting function in EEGLAB, you can
easily average the epochs using the export to BDF/EDF or text option in the
GUI, and checking the option export average instead of epochs.

Hope that helps,
Nike

On Wed, Feb 5, 2014 at 5:11 AM, <eeglablist-request at sccn.ucsd.edu> wrote:

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> Today's Topics:
>
>    1. Compute Amplitude Spectra in microvolts units using       EEGlab
>       (Joana Paiva)
>    2. Re: averaging using EEGlab (Andrew Hill, PhD)
>    3. Re: averaging using EEGlab (Stephen Politzer-Ahles)
>    4. Re: averaging using EEGlab (Tom Campbell)
>    5. Re: eeglablist Digest, Vol 112, Issue 3 (Javier Lopez-Calderon)
>
>
> ---------- Forwarded message ----------
> From: Joana Paiva <joanaispaiva at gmail.com>
> To: eeglablist at sccn.ucsd.edu
> Cc:
> Date: Tue, 4 Feb 2014 00:44:00 +0000
> Subject: [Eeglablist] Compute Amplitude Spectra in microvolts units using
> EEGlab
> Hi,
>
> I would like to know how to compute amplitude spectra in microvolts units
> instead microvolt^2/Hz units (PSD, output from spectopo) using EEGlab? I've
> already tried using spetopo for spectral analysis but I couldn't convert
> output values in microvolts units because I read that PSD consist in FFT
> multiplied by the complex conjugate of the Fourier component.
>
> Thank you,
> Best regards,
>
> --
> *Joana Paiva*
> MSc Student
> Biomedical Engineering
>
> Faculty of Sciences and Technology - University of Coimbra
>
>
> ---------- Forwarded message ----------
> From: "Andrew Hill, PhD" <andrewhill at ucla.edu>
> To: Akshay Maggu <akshaymaggu86 at gmail.com>
> Cc: "eeglablist at sccn.ucsd.edu" <eeglablist at sccn.ucsd.edu>
> Date: Mon, 3 Feb 2014 17:29:26 -0800
> Subject: Re: [Eeglablist] averaging using EEGlab
> Hi Akshay,
>
> Try erplab - free plugin for eeglab that works great (via GUI or
> scripting) to generate averaged waveforms.
>
> Best,
> Andrew Hill
>
> Sent from my iPhone
>
> On Feb 3, 2014, at 5:19 AM, Akshay Maggu <akshaymaggu86 at gmail.com> wrote:
>
>
> Hi all,
>
> Is there any way to go beyond epoching to get averaged waveform using
> EEGlab? I do all the pre-processing and get stuck here. Please help.
>
> Best,
> --
> Akshay Raj Maggu,
> Ph. D student,
> Division of Linguistics and Modern Languages,
> Chinese University of Hong Kong,
> Hong Kong.
> webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
> *Save trees.. Save life! Please don't print this email unless you really
> need to.....*
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
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>
>
> ---------- Forwarded message ----------
> From: Stephen Politzer-Ahles <politzerahless at gmail.com>
> To: Akshay Maggu <akshaymaggu86 at gmail.com>
> Cc: eeglablist <eeglablist at sccn.ucsd.edu>
> Date: Tue, 4 Feb 2014 05:57:14 +0400
> Subject: Re: [Eeglablist] averaging using EEGlab
> Hi Akshay,
>
> To do statistics on averaged ERPs, I believe the STUDY structure has a lot
> of options; I personally haven't used it but there is documentation on the
> EEGLAB wiki. You can also plot averages of one or more datasets in the GUI
> using Plot > Sum/Compare ERPs.
>
> It's also straightforward to make averages in MATLAB. The EEG.data
> structure for epoched data is a three-dimensional matrix (channels *
> samples * trials), so you can create an average for a given dataset with:
>
> avg = mean( EEG.data, 3 );
>
> then just do that for every condition for every participant, and you've
> got averages that you can plot, analyze, etc.
>
> Hope that helps,
> Steve
>
>
>
> Stephen Politzer-Ahles
> New York University, Abu Dhabi
> Neuroscience of Language Lab
> http://www.nyu.edu/projects/politzer-ahles/
>
>
> On Mon, Feb 3, 2014 at 5:19 PM, Akshay Maggu <akshaymaggu86 at gmail.com>wrote:
>
>>
>> Hi all,
>>
>> Is there any way to go beyond epoching to get averaged waveform using
>> EEGlab? I do all the pre-processing and get stuck here. Please help.
>>
>> Best,
>> --
>> Akshay Raj Maggu,
>> Ph. D student,
>> Division of Linguistics and Modern Languages,
>> Chinese University of Hong Kong,
>> Hong Kong.
>> webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
>> *Save trees.. Save life! Please don't print this email unless you really
>> need to.....*
>>
>> _______________________________________________
>> 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
>>
>
>
>
> ---------- Forwarded message ----------
> From: Tom Campbell <tom_campbell75 at hotmail.com>
> To: Akshay Maggu <akshaymaggu86 at gmail.com>, eeglab list <
> eeglablist at sccn.ucsd.edu>
> Cc:
> Date: Tue, 4 Feb 2014 17:48:20 +0000
> Subject: Re: [Eeglablist] averaging using EEGlab
> target_gavg = mean(EEG.data,3);
>
>
>
>
>
>
> ------------------------------
> Date: Mon, 3 Feb 2014 21:19:48 +0800
> From: akshaymaggu86 at gmail.com
> To: eeglablist at sccn.ucsd.edu
> Subject: [Eeglablist] averaging using EEGlab
>
>
> Hi all,
>
> Is there any way to go beyond epoching to get averaged waveform using
> EEGlab? I do all the pre-processing and get stuck here. Please help.
>
> Best,
> --
> Akshay Raj Maggu,
> Ph. D student,
> Division of Linguistics and Modern Languages,
> Chinese University of Hong Kong,
> Hong Kong.
> webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
> *Save trees.. Save life! Please don't print this email unless you really
> need to.....*
>
> _______________________________________________ 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
>
>
>
> ---------- Forwarded message ----------
> From: Javier Lopez-Calderon <javlopez at ucdavis.edu>
> To: akshaymaggu86 at gmail.com, eeglablist at sccn.ucsd.edu
> Cc:
> Date: Tue, 4 Feb 2014 12:21:02 -0800
> Subject: Re: [Eeglablist] eeglablist Digest, Vol 112, Issue 3
> Hi Akshay,
>
> You can try ERPLAB Toolbox <http://erpinfo.org/erplab/erplab-download>,
> which is an EEGLAB plugin for ERP research.
>
> Best,
> Javier
>
>
> On Feb 4, 2014, at 12:00 PM, eeglablist-request at sccn.ucsd.edu wrote:
>
> Send eeglablist mailing list submissions to
> eeglablist at sccn.ucsd.edu
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://sccn.ucsd.edu/mailman/listinfo/eeglablist
> or, via email, send a message with subject or body 'help' to
> eeglablist-request at sccn.ucsd.edu
>
> You can reach the person managing the list at
> eeglablist-owner at sccn.ucsd.edu
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of eeglablist digest..."
> Today's Topics:
>
>   1. averaging using EEGlab (Akshay Maggu)
>
> *From: *Akshay Maggu <akshaymaggu86 at gmail.com>
> *Subject: **[Eeglablist] averaging using EEGlab*
> *Date: *February 3, 2014 at 5:19:48 AM PST
> *To: *eeglablist at sccn.ucsd.edu
>
>
>
> Hi all,
>
> Is there any way to go beyond epoching to get averaged waveform using
> EEGlab? I do all the pre-processing and get stuck here. Please help.
>
> Best,
> --
> Akshay Raj Maggu,
> Ph. D student,
> Division of Linguistics and Modern Languages,
> Chinese University of Hong Kong,
> Hong Kong.
> webpage: http://www.cuhk.edu.hk/lin/new/people/students/maggu/
> *Save trees.. Save life! Please don't print this email unless you really
> need to.....*
>
>
> _______________________________________________
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-- 
G Nike Gnanateja, MSc (Audiology) <http://goog_636235333>
Research Associate,
Department of Audiology,
All India Institute of Speech
and Hearing Mysore-06
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