[Eeglablist] logarithmic PSD using EEGlab study

[Mohammed Jarjees]

Dear all
I want to compute power spectrum density (PSD) for 4 groups using EEGlab study structure. I want to use 'psd' as 'specmode'.
I have used the following codes
[STUDY ALLEEG] = std_precomp(STUDY, ALLEEG, {},'interp','on','recompute','on','spec','on','specparams',{'specmode' 'psd' 'logtrials' 'off' });
This code produce PSD without logarithmic transformation. When change the status of 'logtrials' from  'off' to 'on' as shown in the following codes
[STUDY ALLEEG] = std_precomp(STUDY, ALLEEG, {},'interp','on','recompute','on','spec','on','specparams',{'specmode' 'psd' 'logtrials' 'on' });
The resulted PSD is zero.
Can you please advise me with this?
Many thanks
Mohammed
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20160905/9b83b725/attachment.html>