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<p class="MsoNormal">Dear Fieldtrip users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am part of a research team at the Institute of Health and Biomedical Innovation at Queensland University of Technology in Brisbane, Australia. I am currently working on time-frequency analyses of EEG and EMG signals.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to use ft_freqstatistics for a cluster-based permutation test on my time-frequency data.
<o:p></o:p></p>
<p class="MsoNormal">In the function itself and in the online documentation I read that the input data into ft_freqstatistics should be the result/output from either FT_FREQANALYSIS, FT_FREQDESCRIPTIVES or from FT_FREQGRANDAVERAGE.
<o:p></o:p></p>
<p class="MsoNormal">I have not completed my time-frequency analysis via fieldtrip; hence, I am wondering if it is also possible to create my own input data structure to make it fit for ft_freqstatistics?
<o:p></o:p></p>
<p class="MsoNormal">(Basically, I would like to skip ft_freqanalysis and directly start with cluster-based permutation testing via ft_freqstatistics, and for that I need to adapt my data structure.) If it is possible, which fields have to be created in my
variable to be fed into ft_freqstatistics, so it fulfils all requirements to make the function run?
<o:p></o:p></p>
<p class="MsoNormal">Are there any fields from the output of, for example, FT_FREQANALYSIS that are not needed for ft_freqstatistics?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For example,<o:p></o:p></p>
<p class="MsoNormal">[stat] = ft_freqstatistics(cfg, coh1, coh2, ...)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What fields do coh1, coh2, … have to have? E.g. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">>> display(coh1)<o:p></o:p></p>
<p class="MsoNormal"> labelcmb: {8×2 cell}<o:p></o:p></p>
<p class="MsoNormal"> dimord: 'chancmb_freq_time'<o:p></o:p></p>
<p class="MsoNormal"> cohspctrm: [8×80×2049 double]<o:p></o:p></p>
<p class="MsoNormal"> time: [1×2049 double]<o:p></o:p></p>
<p class="MsoNormal"> freq: [1×80 double]<o:p></o:p></p>
<p class="MsoNormal"> elec: [1×1 struct]<o:p></o:p></p>
<p class="MsoNormal"> cfg: [1×1 struct]<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can I leave out some of these fields (particularly coh1.cfg), and it will still work for ft_freqstatistics?
<o:p></o:p></p>
<p class="MsoNormal">Would it be enough to only have coh1.cohspctrm, coh1.time and coh1.freq?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am still relatively new to Fieldtrip, and working my way through the tutorials etc., but I definitely having trouble to create an appropriate data structure as input into ft_freqstatistics (without using ft_freqanalysis or other functions
alike beforehand). I would very much appreciate your help with this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal">Kind regards<o:p></o:p></p>
<p class="MsoNormal">Luisa<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">Luisa Roeder, PhD</span></b><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU"> |
</span><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">Research Associate | Movement Neuroscience</span><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">Institute of Health and Biomedical Innovation | School of Exercise and Nutrition Science</span><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">Queensland University of Technology | 60 Musk Ave, Kelvin Grove, Brisbane, QLD 4059, Australia.</span><span style="font-size:10.0pt;color:#1F497D;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">t:</span></b><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU"> +61 7 3138 6428 |
<b>e: <a href="mailto:l.roeder@qut.edu.au"><span style="color:blue">l.roeder@qut.edu.au</span></a>
</b>| <b>w:</b> <b><a href="http://www.ihbi.qut.edu.au/"><span style="color:blue">www.ihbi.qut.edu.au</span></a>
</b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;mso-fareast-language:EN-AU">CRICOS No. 00213J</span><span style="mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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