[Eeglablist] Comparing erpImage betweern conditions/subjects

[Arnaud Delorme]

Dear Iman,

To make it short, the method we use is to compute ERPimage in each subject and interpolate the number of trials so all ERPimage have the same number of lines. There is no normalization by default.

We then perform statistics across subjects as we do for time-frequency images (ERSP). We are preparing a detailed description of this method.
Best,

Arno

On 12 May 2013, at 02:28, Iman M.Rezazadeh wrote:

> Hello,
> Thanks for your reply,Arno!
> 1-     What   statistical method is used in STUDY to  do btw group or within group analysis ? how can it differentiate to erpimage from two different conditions ?
> 2-     how does it normalize the data for each subject to have a grand erpimage ?
> 3-     Are you aware of any publication using grand erpimage ?
> Is it possible to send me the link to access the method in detail? I cannot find on the EEGLAB website
> Best,
> Iman
> From: Arnaud Delorme [mailto:arno at ucsd.edu] 
> Sent: Friday, May 10, 2013 10:26 PM
> To: Iman M.Rezazadeh
> Cc: eeglablist at sccn.ucsd.edu; 'Makoto Miyakoshi'
> Subject: Re: Comparing erpImage betweern conditions/subjects
>  
> Dear Iman,
>  
> you can do different types of ERPimage group analysis in STUDY in EEGLAB 12.
> Best, 
>  
> Arno
>  
> On 3 May 2013, at 17:07, Iman M.Rezazadeh wrote:
> 
> 
> Hi EEGLABers:
>  
> 1-     Does anybody have any idea how can one normalize erpImage to compare erpimages between two or more conditions or subjects who may have different number of trials ?
> 2-     Any idea for having erp-Image with Reaction Time graph on it at the group level?
>  
> Best,
> Iman
>  
> Iman M.Rezazadeh, PhD
> Postdoctoral Research Fellow
> Center for Mind and Brain
> University of California, Davis
> www.linkedin.com/pub/iman-m-rezazadeh/10/859/840
> http://mindbrain.ucdavis.edu/people/imanmr
> email : irezazadeh at ucdavis.edu
> Tel: 530-297-4444
> Cell:310-490-1808
> Skype: Imanmr
> ایمان محمد رضازاده
> 伊芒·瑞扎扎德
>  
>  
>  
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