[Eeglablist] difficulty with Channel spectra & maps

[Noland White]

I am a new user to EEGLAB and I am using MATLAB v5.3.

 

When attempting to plot Channel spectra and maps with a 19-channel data
set, using the default settings, I get the following error:

 

 

Error using ==> pwelch

Requires window's length to be no greater than the FFT length

 

And the following in the history window:

 

pop_spectopo(): selecting time range   0.00 ms to 176515.82 ms (points 1
to 22595)

Pop_spectopo: finding data discontinuities

Computing spectra (window length 512; fft length: 1024; overlap 0):

 

 

I also attempted to plot the tutorial data set, with the default
settings, and get the same error.

 

Am I doing something incorrectly?

 

Thank you in advance for any assistance,

 

Noland White

 

 

 

 

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

J. Noland White, Ph.D.

Department of Psychology, CBX 90

231 W. Hancock St.

Georgia College & State University

Milledgeville, GA 31061

 

Office:   478-445-5946

Fax:      478-445-0856

 

 

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