[Eeglablist] Computing spectral frequency using the Welch method (Hamming window)

[Arnaud Delorme]

> Looking at published articles, I’ve seen that people compute the 
> trial-by-trial spectral frequency content using the Welch method 
> (Hamming window) and then make a separate average for each condition. 
> How is this done in Eeglab (Matlab) using the EEG dataset (.set) files 
> I am currently working with? I understand that a script has to be 
> used, but since I am an Eeglab and Matlab newbie, I don’t know how to 
> specify the procedures on my data-files. Any help would be greatly 
> appreciated.
>

In EEGLAB, the spectrum is computed using the pwelch method (which is 
also the Matlab standard procedure if you have the signal processing 
toolbox). You may compare conditions in a STUDY (which is a specific 
EEGLAB object; see the tutorial for more information).

Best regards,

Arno