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<div dir="ltr">Gesendet mit meinem HTC</div>
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<div id="htc_header">----- Nachricht beantworten -----<br>
Von: "Schoffelen, J.M. (Jan Mathijs)" <jan.schoffelen@donders.ru.nl><br>
An: "FieldTrip discussion list" <fieldtrip@science.ru.nl><br>
Betreff: [FieldTrip] Granger analysis<br>
Datum: Sa., Aug. 12, 2017 21:42</div>
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<div>Hi Matt,
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<div class="">I have never done this myself, but I think that in principle it should be possible to fit a set of models, and then compute the residuals’ variance ratio by hand.</div>
<div class="">In other words, assuming data1 and data2 to be variables that consist of a single channel:</div>
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<div class="">mvar1 = ft_mvaranalysis(cfg, data1);</div>
<div class="">mvar2 = ft_mvaranalysis(cfg, data2);</div>
<div class="">mvar12 = ft_mvaranalysis(cfg, ft_appenddata([],data1,data2));</div>
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<div class="">GC1to2 = log(mvar2.noisecov(1,1)./mvar12.noisecov(2,2));</div>
<div class="">GC2to1 = log(mvar1.noisecov(1,1)./mvar12.noisecov(1,1));</div>
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<div class="">Best wishes,</div>
<div class="">Jan-Mathijs</div>
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<div class="" style="word-wrap:break-word">J.M.Schoffelen, MD PhD<br class="">
Senior Researcher, VIDI-fellow - PI, language in interaction<br class="">
Telephone: +31-24-3614793</div>
<div class="" style="word-wrap:break-word">Physical location: room 00.028</div>
<div class="" style="word-wrap:break-word">Donders Centre for Cognitive Neuroimaging, Nijmegen, The Netherlands<br class="">
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<div class="">On 12 Aug 2017, at 00:05, MATTHEW I BANKS <<a href="mailto:mibanks@wisc.edu" class="">mibanks@wisc.edu</a>> wrote:</div>
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<div class="" style="margin-top:0px; margin-bottom:0px">Greetings. What is the easiest way to compute non-spectrally resolved Granger causality, i.e. log(var(e_x)/var(e_xy)), where e_x and e_xy are the AR model error terms?</div>
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<div class="" style="margin-top:0px; margin-bottom:0px">-Matt</div>
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<div class="" style="margin-top:0px; margin-bottom:0px"><span class="" style="color:rgb(33,33,33); font-size:15px">____________________________</span></div>
<div class="" style="margin-top:0px; margin-bottom:0px"><span id="ms-rterangepaste-start" class=""></span><span class="" style="color:rgb(33,33,33); font-size:15px">Matthew I. Banks, Ph.D.</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">Associate Professor</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">Department of Anesthesiology</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">University of Wisconsin</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">1300 University Avenue, Room 4605</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">Madison, WI 53706</span><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">office tel. </span><a href="tel:%28608%29261-1143" target="_blank" id="LPNoLP" class="" style="font-size:15px">(608)261-1143</a><br class="" style="color:rgb(33,33,33); font-size:15px">
<span class="" style="color:rgb(33,33,33); font-size:15px">lab tel. </span><a href="tel:%28608%29263-6662" target="_blank" id="LPNoLP" class="" style="font-size:15px">(608)263-6662</a><br class="" style="color:rgb(33,33,33); font-size:15px">
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<a href="http://anesthesia.wisc.edu/index.php/Banks_Laboratory" target="_blank" id="LPNoLP" class="" style="font-size:15px">http://anesthesia.wisc.edu/index.php/Banks_Laboratory</a><br class="" style="color:rgb(33,33,33); font-size:15px">
<a href="http://ntp.neuroscience.wisc.edu/banks.htm" target="_blank" id="LPNoLP" class="" style="font-size:15px">http://ntp.neuroscience.wisc.edu/banks.htm</a><span id="ms-rterangepaste-end" class=""></span><br class="">
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