[Eeglablist] Average power topographic maps

Christian Scharinger c.scharinger at gmx.net
Thu Oct 20 02:52:43 PDT 2011


Hello,

I have some questions concerning time-frequency plots in/with EEGlab.

1)
If anybody has an answer to the question raised a few weeks ago on this 
list by Tracey, I would be happy to hear it, too: "I would like to ask 
whether EEGLAB allows one to plot average power topographic maps in 
standard frequency bands (delta, theta, alpha, beta, gamma). From the 
'Plot channel spectra and maps' command one can only plot spectral plots 
for individual frequencies. Is there a way of taking the average over a 
fixed band?"

2)
Is it possible to plot only the scalp maps of the 'Plot channel spectra 
and maps' in 1-Hz-frequency steps ranging from 1 Hz to 20 Hz (that is 
generate 20 scalp maps at once and in one figure)?

3) Is it somehow possible to get a plot like the lower one of 'Plot 
channel spectra and maps' but just for certain electrodes to have a more 
concise representation?

4) A more general one: Does anybody know of an open collection of 
EEGlab-(example)-scripts for doing time-frequency analysis in EEGlab 
that goes beyond the few examples on the EEGlab website?

Many thanks,
Christian








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