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<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff size=2>Dear
Maria José,</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff
size=2>I do these things with Matlab scripts. For the power spectrum you
should use pwelch, it takes care of windowing etc.</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff size=2>You
can see the way it is called from EEGLAB in the file
spectopo.m</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff size=2>The
following command gives you a first look at the spectrum of channel
ch=1.</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff
size=2>figure;ch=1;pwelch(EEG.data(ch,:),EEG.srate*2,EEG.srate*1,EEG.srate*4,EEG.srate)</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff size=2>A good
way to export your data is with xlswrite to Excel</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff
size=2>Best,</FONT></SPAN></DIV>
<DIV><SPAN class=733401208-13122004><FONT face=Arial color=#0000ff
size=2>Johannes</FONT></SPAN></DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Ursprüngliche Nachricht-----<BR><B>Von:</B>
eeglablist-bounces@sccn.ucsd.edu
[mailto:eeglablist-bounces@sccn.ucsd.edu]<B>Im Auftrag von </B>Maria Jose'
Esposito<BR><B>Gesendet:</B> Donnerstag, 9. Dezember 2004 09:56<BR><B>An:</B>
eeglablist@sccn.ucsd.edu<BR><B>Betreff:</B> [Eeglablist] FFT data with EEGlab,
how to get them?<BR><BR></FONT></DIV><FONT size=3>Hi everybody,<BR>I've just
started to use EEGlab 4.511 on a Matlab 7.0. I'm interested in extract from
continuous EEG data (PSG) the power spectrum of different bands
frequencies (that I would like define by myself) from a specific channel, and
then to have this data in a format (.txt is ok) that allow me to export
them into another software for statistical analysis. I've already
imported my raw EEG (from an EDF format) into EEGlab an I've done a visual
artifacts rejection, but I have some problem in finding a function that allows
to define spectral analysis features [e.g. frequency band-withs, spectral
resolution (window on analysis, epoch lengh), how to add a cosine window, how
to define the ovelapping rate]. I found in EEGlablist message archive
that it is possible to do something similar by"<I>phasecohe</I>r"
function...is it in EEGlab or in Matlab?<BR>Thank you very much.....I'm really
looking forward to hearing from someone soon.<BR>m.j.</FONT>
<BR>_____________________________________________________________________<BR><BR>Maria
José Esposito<BR>Dipartimento di Psicologia, Universitŕ di Bologna<BR>viale
Berti Pichat, 5<BR>40127, Bologna<BR>Italia<BR><BR><B>Tel</B>:
+39-051-2091846/2091878 <B>lab.</B>
+39-051-2091826<BR><B>Fax</B>: +39-051-243086<BR><B>email</B>:
mariajose.esposito2@unibo.it<BR>
alphadreaming@yahoo.it
<BR>_______________________________________________________________________
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