[Eeglablist] baseline correction for ERSPs

[Pandelis Perakakis]

Thank you Daniele,

looking closer at std_precomp.m I found 'rmbase' with the comment % deprecated, for backward compatibility purposes, not documented

I assume it has been replaced by the option 'baseline' found at newtimef.m

However the help of newtime.f is not clear (at least to me) on how to define a custom baseline, e.g. from -600 to -200ms. Here is what the help file says about the 'baseline' parameter:

'baseline'  = Spectral baseline end-time (in ms). NaN --> no baseline is used. 
%                     A [min max] range may also be entered
%                     You may also enter one row per region for baseline
%                     e.g. [0 100; 300 400] considers the window 0 to 100 ms and
%                     300 to 400 ms This parameter validly defines all baseline types 
%                     below. Again, [NaN] Prevent baseline subtraction.
%                     {default: 0 -> all negative time values}. 

I tried 'baseline', [-600 -200] but got en error.

I could dig into the script to see what baseline does exactly, but I would appreciate it if someone could enlighten me about how to use this option.

Thanks again!
Pandelis





--
Pandelis Perakakis, PhD
Mind, Brain and Behaviour Research Centre (CIMCYC)
University of Granada
Campus Cartuja, 12071
Granada
Spain

e-mail: peraka at ugr.es
url: pandelisperakakis.wordpress.com






On 23 Dec 2016, at 09:23, Daniele Marinazzo <daniele.marinazzo at gmail.com> wrote:

> Dear Pandelis
> 
> I did not try from the GUI, but the functions pop_precomp.m and std_precomp.m have adjustable "rmbase" parameters
> 
> hope this helps
> 
> d.
> 
> On Thu, Dec 22, 2016 at 3:20 PM, Pandelis Perakakis <peraka at ugr.es> wrote:
> Dear all,
> 
> I am using the Study GUI to precompute channel ERSP measures and I want to apply a baseline correction using as baseline a period extending from e.g., -600ms to -200ms relative to my event at time zero. Is this possible using the 'baseline' option in the GUI's edit box, and how exactly? 
> 
> Many thanks!
> 
> Pandelis
> 
> P.S. I am sorry if you received this email more than once!
> 
> --
> Pandelis Perakakis, PhD
> Mind, Brain and Behaviour Research Centre (CIMCYC)
> University of Granada
> Campus Cartuja, 12071
> Granada
> Spain
> 
> e-mail: peraka at ugr.es
> url: pandelisperakakis.wordpress.com
> 
> 
> 
> 
> 
> 
> 
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