[Faster-eeg-list] pwelch for component_properties

[Brian R. <bri...@nc...>]

Hi All,

In running faster routines on different systems, I realized that I am 
getting different results from component_properties.m.  The difference 
is only in the power band/frequency slope criteria (the second column of 
matrix returned by component_properties.m)

  - this is due to in one case, component_properties calls 
../eeglab11_0_5_4b/functions/octavefunc/signal/pwelch.m while in another 
it calls a built in matlab pwelch function (in the signal processing 
toolbox).  Unfortunately, values returned (for one test case at least) 
by these two versions are similar (r = .77) but definitely not 
identical.  In one test case, different components are marked for 
rejection based on changes in these component property values.  Was one 
version of pwelch intended?  If so, which one?

thanks,
Brian

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San Francisco VA Medical Center 116D
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