[Eeglablist] artifacts in time freq plots

[ondrej lassak]

I fed the TF analysis single sinusoid 6 and 12Hz and the TF plot shows
multiple specral lines (more than two).
How can one rely on the TF when it introduces such massive artifacts both in
pure FFT spectrogram and Wavelet scalogram?
Or am I doing something wrong? When only one freq during the whole time span
is present the TF plots look like really bad moira and the presence of the
freq is apparent only from the summation over time (left from the  main
plot).


The matlab report with function calls and resulting pictures is attached
below (no scripts embedded in the html).
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20100507/46a81564/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: baseline eeglab TFs experiments.zip
Type: application/zip
Size: 269024 bytes
Desc: not available
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20100507/46a81564/attachment.zip>