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<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>Dear Fieldtrip
Discussion List Readers,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>I have received
several emails froms FT-users who want to statistically test coherence
differences in single subjects. This methodology was described in a recent paper
in the Journal of Neuroscience Methods (Maris, Schoffelen, and Fries, 2007). To
perform the same analysis on your own data using FT, you should take the
following into account:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>1. You must use the FT-function
clusterrandanalysis. This is the oldest statistics function in FT, and was written
for the most part by Eric Maris. <st1:PersonName w:st="on">Robert Oostenveld</st1:PersonName>
has recently set up a completely new statistics framework. However, this
framework does not yet contain functionality to do statistical testing of
coherence differences. This is in the pipeline, but at this moment you still
have to use the old clusterrandanalysis.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>2. You can test
coherence differences for (1) all channel pairs or (2) for all channel pairs that
have a common reference channel. Only the latter analysis was described in JNM
paper and is also the one that was most extensively tested. I strongly advice
you to stick to the reference channel analysis. Most likely, you will get
memory problem with the other option. From now on, I assume that you will be
doing a reference channel analysis.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>3. The input data for
clusterrandanalysis is the output of two freqanalysis runs, one every
experimental condition.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>4. cfg.statistic must
be ‘indepsamplesZcoh’.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>5. cfg.channelcmb must
contain a Mx2 cell array of pairs of channel labels that all contain the
reference channel.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>6. cfg.chancmbgeom
must be ‘refchan’.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>Good luck,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>Eric Maris<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>dr. <st1:PersonName
style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x"
tabIndex="0" w:st="on">Eric Maris</st1:PersonName><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>NICI/Biological
Psychology and<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceName w:st="on"><font size=3
face="Bookman Old Style"><span lang=EN-US style='font-size:12.0pt;font-family:
"Bookman Old Style"'>F.C.</span></font></st1:PlaceName><font
face="Bookman Old Style"><span lang=EN-US style='font-family:"Bookman Old Style"'>
<st1:PlaceName w:st="on">Donders</st1:PlaceName> <st1:PlaceType w:st="on">Center</st1:PlaceType></span></font></st1:place><font
face="Bookman Old Style"><span lang=EN-US style='font-family:"Bookman Old Style"'>
for Cognitive NeuroImaging<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceType w:st="on"><font size=3
face="Bookman Old Style"><span lang=EN-US style='font-size:12.0pt;font-family:
"Bookman Old Style"'>University</span></font></st1:PlaceType><font
face="Bookman Old Style"><span lang=EN-US style='font-family:"Bookman Old Style"'>
of <st1:PlaceName w:st="on">Nijmegen</st1:PlaceName></span></font></st1:place><font
face="Bookman Old Style"><span lang=EN-US style='font-family:"Bookman Old Style"'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=3
face="Bookman Old Style"><span lang=EN-US style='font-size:12.0pt;font-family:
"Bookman Old Style"'>P.O. Box</span></font></st1:Street><font
face="Bookman Old Style"><span lang=EN-US style='font-family:"Bookman Old Style"'>
9104</span></font></st1:address><font face="Bookman Old Style"><span
lang=EN-US style='font-family:"Bookman Old Style"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>6500 HE Nijmegen<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>The <st1:place w:st="on"><st1:country-region
w:st="on">Netherlands</st1:country-region></st1:place><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>T:+31 24 3612651
(NICI)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>T:+31 24 3610754
(FCDC)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>F:+31 24 3616066
(NICI)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>E: maris@nici.ru.nl<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>MSc Cognitive
Neuroscience :</span></font><font size=1 face=Verdana><span style='font-size:
9.0pt;font-family:Verdana'><a href="http://www.ru.nl/master/cns/"
title="blocked::http://www.ru.nl/master/cns/
http://www.ru.nl/master/cns/"><font
size=3 face="Bookman Old Style" title="blocked::http://www.ru.nl/master/cns/"><span
title="blocked::http://www.ru.nl/master/cns/"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'>www.ru.nl/master/cns/</span></span></font></a></span></font><font
size=1 face=Verdana><span lang=EN-US style='font-size:9.0pt;font-family:Verdana'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Bookman Old Style"><span lang=EN-US
style='font-size:12.0pt;font-family:"Bookman Old Style"'><o:p> </o:p></span></font></p>
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<p>----------------------------------</p>
<p>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis.</p>
<p> http://listserv.surfnet.nl/archives/fieldtrip.html</p>
<p> http://www.ru.nl/fcdonders/fieldtrip/</p>