[Eeglablist] ERPS vs Time-Freq

[Iman M.Rezazadeh]

Thanks a lot for the paper. I will be studying the paper carefully! 

Best

Iman

 

 

-------------------------------------------------------------

Iman M.Rezazadeh, Ph.D

 

Postdoctorocal Research Fellow

Semel Intitute, UCLA , Los Angeles

& Center for Mind and Brain, UC DAVIS, Davis

 

 

From: Burgess, Adrian [mailto:A.P.BURGESS at aston.ac.uk] 
Sent: Monday, March 3, 2014 7:52 AM
To: Iman M.Rezazadeh; mmiyakoshi at ucsd.edu; 'Iman M.Rezazadeh'
Cc: 'EEGLAB List'
Subject: RE: [Eeglablist] ERPS vs Time-Freq

 


You might also find the following paper helpful: 'Towards a Unified
Understanding of Event-Related Changes in the EEG: The Firefly Model of
Synchronization through Cross-Frequency Phase Modulation' PLOS One (2012)
at:
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0045630


 

 

Adrian Burgess,

Professor of Psychology,

School of Life & Health Sciences,

Aston University,

Birmingham B4 7ET

0121 204 4054

 

From: eeglablist-bounces at sccn.ucsd.edu
<mailto:eeglablist-bounces at sccn.ucsd.edu>
[mailto:eeglablist-bounces at sccn.ucsd.edu] On Behalf Of Iman M.Rezazadeh
Sent: 02 March 2014 08:59
To: mmiyakoshi at ucsd.edu <mailto:mmiyakoshi at ucsd.edu> ; 'Iman M.Rezazadeh'
Cc: 'EEGLAB List'
Subject: Re: [Eeglablist] ERPS vs Time-Freq

 

Hi, 

It is informative site which discusses about Evoked vs Induced ERP.

http://personalpages.manchester.ac.uk/staff/Wael.El-deredy/erbd/

-Iman

 

From: eeglablist-bounces at sccn.ucsd.edu
<mailto:eeglablist-bounces at sccn.ucsd.edu>
[mailto:eeglablist-bounces at sccn.ucsd.edu] On Behalf Of Makoto Miyakoshi
Sent: Thursday, February 27, 2014 10:48 PM
To: Iman M.Rezazadeh
Cc: EEGLAB List
Subject: Re: [Eeglablist] ERPS vs Time-Freq

 

Dear Iman,

 

I'm not sure if there is any difference... I was not aware of it.

You may want to check dftfilt3() for the EEGLAB default wavelet (and let us
know what you find).


> And what is the difference btw evoked and induced potential.

Evoked is phase-reset to stimulus onset and induced is not. I thought
Galambos proposed this distinction, but I could be wrong.

 

Makoto

2014-02-27 16:35 GMT-08:00 Iman M.Rezazadeh <i_rezazadeh at yahoo.com
<mailto:i_rezazadeh at yahoo.com> >:

Hi , 

What is the difference btw the traditional time-freq representation of an
ERP and ERPS? Are they the same? Since Suppose,  we have two epochs x1 and
x2 with zero means , then 

 

1-      In traditional  way :  we make an average out of them x_avg and then
make the Fourier transform of them F(x_avg)=F([x1+x2]/2 ) = F(x1/2)+F(x2/2)=
[F(x1) + F(X2)] / 2

2-      In ERPS we calculate time-freq for each epoch F(x1) and F(x2) and
then make the average ERPS=[ Fx(1) + F(x2)] / 2 

 

 

And what is the difference btw evoked and induced potential. My questions
are mostly from Chp 3 of the Oxford Handbook of Event Related Potential
Components pg 77-78

 

Best

Iman





 

-- 

Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego

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