<div dir="ltr">Hi Peter,<div class="gmail_extra"><br><div class="gmail_quote">2015-04-15 1:46 GMT+02:00 Peter Goodin <span dir="ltr"><<a href="mailto:pgoodin@swin.edu.au" target="_blank">pgoodin@swin.edu.au</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Denis,<br>
<br>
Thanks very much for the prompt reply and explanation.<br>
<br></blockquote><div><br></div><div>sure!</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
As a final clarification, I don't change my data to the absolute and so get "negative" time points.</blockquote><div><br></div><div>Yeah, this is special semantics and may be confusing at the first moment.</div><div>It's only one way to tell the difference between conditions, durations are positive, but the sign refers to the difference between 'a' and 'b'.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Does this just mean that for my 2 sample t-test, group B shows increased response compared to group A (while if it were positive, it'd be group A showing increased response)?<br></blockquote><div><br></div><div>positive means, at this location A was significant for duration t, negative means, B was significant for dutation t.</div><div> <br></div><div>I hope this helps,</div><div>Denis</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
thanks,<br>
<span class=""><br>
Peter<br>
<br>
__________________________<br>
Peter Goodin,<br>
BSc (Hons), Ph.D Candidate (submitted).<br>
<br>
Brain and Psychological Sciences Research Centre (BPsych)<br>
Swinburne University,<br>
Hawthorn, Vic, 3122<br>
<a href="http://www.swinburne.edu.au/swinburneresearchers/index.php?fuseaction=profile&pid=4149" target="_blank">http://www.swinburne.edu.au/swinburneresearchers/index.php?fuseaction=profile&pid=4149</a><br>
<br>
Monash Alfred Psychiatry Research Centre (MAPrc)<br>
Level 4, 607 St Kilda Road,<br>
Melbourne 3004<br>
________________________________________<br>
</span>From: <a href="mailto:mne_analysis-bounces@nmr.mgh.harvard.edu">mne_analysis-bounces@nmr.mgh.harvard.edu</a> [<a href="mailto:mne_analysis-bounces@nmr.mgh.harvard.edu">mne_analysis-bounces@nmr.mgh.harvard.edu</a>] on behalf of Denis-Alexander Engemann [<a href="mailto:denis.engemann@gmail.com">denis.engemann@gmail.com</a>]<br>
Sent: Wednesday, 15 April 2015 2:20 AM<br>
To: Discussion and support forum for the users of MNE Software<br>
Subject: Re: [Mne_analysis] mne.stats.summarize_clusters_stc problem<br>
<span class=""><br>
Hi Peter,<br>
<br>
the summarize function is generating a temporal summary, in which the T-obs is weighted by the duration of significance at each vertex. The first 'time-point' is a summary of the following 'time points' / clusters. If you have 2 clusters, 3 is the expected dimensionality for the time axis.<br>
<br>
I hope that helps,<br>
Denis<br>
<br>
</span>2015-04-14 8:45 GMT+02:00 Peter Goodin <<a href="mailto:pgoodin@swin.edu.au">pgoodin@swin.edu.au</a><mailto:<a href="mailto:pgoodin@swin.edu.au">pgoodin@swin.edu.au</a>>>:<br>
<span class="">Hi MNE list,<br>
<br>
I'm trying to compute an stc output after running spatio-temporal clustering over 71 time points (1000 Hz sampling rate) with 20484 vertices (of which there were 2 clusters at < .05 [huzzah!]).<br>
<br>
The output at this step seems ok (my t_obs array is 71 x 20484), but when I run mne.stats.summarize_clusters_stc, the stc file is a 20484 x 3 array with tmin = 0 ms and tmax = 2 ms (tstep is as specified at .001).<br>
<br>
I've run through the demo data to make sure it's not a bug and that comes back as expected.<br>
<br>
Any help would be appreciated.<br>
<br>
Peter<br>
<br>
<br>
__________________________<br>
Peter Goodin,<br>
BSc (Hons), Ph.D Candidate (submitted).<br>
<br>
Brain and Psychological Sciences Research Centre (BPsych)<br>
Swinburne University,<br>
Hawthorn, Vic, 3122<br>
<a href="http://www.swinburne.edu.au/swinburneresearchers/index.php?fuseaction=profile&pid=4149" target="_blank">http://www.swinburne.edu.au/swinburneresearchers/index.php?fuseaction=profile&pid=4149</a><br>
<br>
Monash Alfred Psychiatry Research Centre (MAPrc)<br>
Level 4, 607 St Kilda Road,<br>
Melbourne 3004<br>
_______________________________________________<br>
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