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<span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">Hi,<o:p></o:p></span></p>
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<span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">I am analyzing high density surface electromyography (HD-sEMG) data, where I am calculating the similarities between each channel in the sensor grid. This is done in two conditions to
see if there are any effect from a specific intervention, from 12 subjects, where pre and post recordings has been performed for both a control and intervention group. For the similarity measure I have calculated normalised mutual information (NMI), where
I have two different outcome measures from my calculations. NMI heatmaps (12x5 matrices) representing the aggregated NMI over the HD-sEMG sensor grid, and connectivity maps (60x60 matrices) representing the similarity between each electrode pair. I have attached
examples of the data, so you get the idea.<o:p></o:p></span></p>
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<span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">I am trying to find a way to compare this data, which has a spatio-temporal pattern. The FieldTrip toolbox has a lot of functions to analyse EEG/MEG data and as my data (HD-sEMG) has
many of the same characteristics as EEG data, this toolbox might be useful to analyse my data. But in my case, I have already analysed the EMG signals by calculating NMI, and only need to do the statistical comparison now. FieldTrip is provided with a couple
of statistical functions, but I'm unsure about how to use these on my data and if it is possible with this toolbox. The approach I'm looking into is </span><a href="http://www.fieldtriptoolbox.org/tutorial/cluster_permutation_timelock"><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#660099;text-decoration:none">FieldTrip
cluster-based permutation tests</span></a><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">, but it cannot directly be transferred to my case, because I am comparing the already analysed data. So my data kind of already have the data
structure of the output from the analysis of this tutorial (the plots).<o:p></o:p></span></p>
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<span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">So my question is: How can I use the statistical functions of the FieldTrip toolbox for comparison of NMI (spatio-temporal data)? If this is possible? I want to compare the heatmaps
(12x5 vs 12x5 data structures) to each other and connectivity maps (60x60 vs 60x60 data structures) to each other.<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#404040">Thank you<br>
<br>
Best regards<br>
Toby S. Waterstone<o:p></o:p></span></p>
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