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<font face="Verdana">Thank you Robert.<br>
<br>
As you know, there is a growing body of work on synchrony. How
can I calculate that in EEGLAB?<br>
<br>
Fred<br>
<br>
</font>
<div class="moz-cite-prefix">On 9/27/2013 8:21 PM, robert coben
wrote:<br>
</div>
<blockquote
cite="mid:7F11EACD-731C-49AE-9E6E-36D89485E4BC@gmail.com"
type="cite">
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charset=iso-8859-1">
Fred and Arnaud,
<div><br>
</div>
<div>Having worked with coherence and more recently sloreta
coherence and SIFT, I will provide some feedback. Coherence as a
measure of "connectivity" between pairs is extremely flawed. I
would agree with Arnaud is recommending SIFT and granger
causality. The information is much richer and more closely
resembles structural connectivity metrics.</div>
<div><br>
</div>
<div>Rob</div>
<div><br>
</div>
<div><br>
<div>
<div>On Sep 27, 2013, at 5:38 PM, Fred Travis <<a
moz-do-not-send="true" href="mailto:ftravis@mum.edu">ftravis@mum.edu</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div> Hi Arnaud<br>
<br>
By synchrony I mean in phase EEG. Coherence us a general
case-stability of phase relation--and synchrony is a
specific case--stability of phase relation and in phase<br>
<br>
Fred<br>
<div class="moz-cite-prefix">On 9/27/2013 2:54 PM, Arnaud
Delorme wrote:<br>
</div>
<blockquote
cite="mid:8C18ACC3-B825-4ED2-AC0A-5C46FADEB873@ucsd.edu"
type="cite"> Hi Fred,
<div><br>
</div>
<div>what do you mean by synchrony? </div>
<div>To caclulate some of additional connectivity
measures, you might want to try SIFT, an EEGLAB
associated toolbox and plugin. It will allow you to
compute Granger Causality based measures such as
partial directed coherence. It will also allow you to
compute many other measures including the popular
directed transfer entropy.</div>
<div><br>
</div>
<div>Hope this helps,</div>
<div><br>
</div>
<div>Arno</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div>
<div>
<blockquote type="cite">
<div>1. synchrony (rather than coherence)</div>
</blockquote>
<blockquote type="cite">
<div> 2. cross frequency coherence--coherence
between frequency bands (Palva and Palva)<br>
3. cepstrum analysis--frequency analysis of
the power spectra<br>
<br>
Many thanks<br>
<br>
Fred<br>
<pre class="moz-signature" cols="72">--
Fred Travis, Ph.D.
Director, Center for Brain, Consciousness and Cognition
Dean, Graduate School
Chair, Maharishi Vedic Science Department
Office: 641 472 1209
Fax: 641 470 1316
Skype: fredtravis
Website: <a moz-do-not-send="true" href="http://drfredtravis.com/">drfredtravis.com</a></pre>
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<pre class="moz-signature" cols="72">--
Fred Travis, Ph.D.
Director, Center for Brain, Consciousness and Cognition
Dean, Graduate School
Chair, Maharishi Vedic Science Department
Office: 641 472 1209
Fax: 641 470 1316
Skype: fredtravis
Website: <a moz-do-not-send="true" href="http://drfredtravis.com">drfredtravis.com</a></pre>
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<pre class="moz-signature" cols="72">--
Fred Travis, Ph.D.
Director, Center for Brain, Consciousness and Cognition
Dean, Graduate School
Chair, Maharishi Vedic Science Department
Office: 641 472 1209
Fax: 641 470 1316
Skype: fredtravis
Website: drfredtravis.com</pre>
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