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Hi Dennis,<span class=""><br class="">
Thank you, this is the script I’ve been working from. The problem I am having though, is that as f-stats are >0, they do not indicate which group is larger than the other, which is what I would like to know. I have tried to use scipy.stats.ttest_ind but I get
this error:<br class="">
</span><span class="">ValueError: could not broadcast input array from shape (1000) into shape (614520)<br class="">
</span><span class=""><br class="">
</span>
<div class="">The command is:</div>
<div class=""> T_obs, clusters, cluster_p_values, H0 = clu =\</div>
<div class=""><span class="Apple-tab-span" style="white-space:pre"></span>spatio_temporal_cluster_test(all_data, connectivity=connectivity, n_jobs=2, stat_fun= scipy.stats.ttest_ind)</div>
<div class=""><br class="">
</div>
<div class="">all_data is 2 lists (2 groups) of 16 and 19 participants, with 30 time points of 20484 vertices for each participant.</div>
<div class=""><br class="">
</div>
<div class="">I hope that makes sense (and there is a possible work around!). Thanks again for you help,</div>
<div class=""><br class="">
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Talitha </div>
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<br class="">
On 12 Jun 2017, at 05:33, Denis-Alexander Engemann <<a href="mailto:denis.engemann@gmail.com" class="">denis.engemann@gmail.com</a>> wrote:</div>
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<div class="">
<div dir="ltr" class="">Hi Talitha,
<div class=""><br class="">
</div>
<div class="">you can run the permutation clustering with a wide array of contrasts. This might be what you are looking for:</div>
<div class=""><br class="">
</div>
<div class=""><a href="http://martinos.org/mne/dev/auto_tutorials/plot_stats_cluster_spatio_temporal_2samp.html" class="">http://martinos.org/mne/dev/auto_tutorials/plot_stats_cluster_spatio_temporal_2samp.html</a><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">I hope this helps,</div>
<div class="">Denis</div>
<div class=""><br class="">
<div class="gmail_quote">
<div dir="ltr" class="">On Sun, Jun 11, 2017 at 12:00 PM Talitha Ford <<a href="mailto:tcford@swin.edu.au" class="">tcford@swin.edu.au</a>> wrote:<br class="">
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear all,<br class="">
<br class="">
Similar to conducing a pair samples t-test on source data using spatio-temporal clustering, allowing the visualisation of clusters where condition A > condition B and vice versa, is it possible to run an independent samples t-test to visualise differences between
two groups? The 2 samples permutation tests currently available are limited in that they plot F statistics that don’t give a direction of the difference between the groups. Basically, is it possible to identify clusters that differ significantly between the
groups, as well as identify/visualise the direction in which they differ?<br class="">
<br class="">
I am currently attempting to extract the cluster values for each participant to get an overall mean for each vertex within the cluster to compare between groups, but this seems very inefficient.<br class="">
<br class="">
Cheers,<br class="">
Talitha<br class="">
<br class="">
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