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<p>Dear all, <br>
</p>
<p>I am an msc student and I am currently analysing eeg 64 channels data. <br>
</p>
<p>Particularly, i have a within subject design in which i have 12 conditions of interest and 30 subjects. <br>
</p>
<p>I am planning to do a cluster based permutation t-test, which i successfully carried out on a single participant (pilot data), however soon i will have to analyse data from 30 participants. <br>
</p>
<p>I have read all the tutorials pertaining this argument but i could not find the ERF_orig.mat file in the FTP server. <br>
</p>
<p>Thus, i wanted to ask you specifically about the data structure contained in that file. <br>
</p>
<p>Quoting from the "cluster-based permutation tests on event related fields" <br>
</p>
<p><br>
</p>
<p>"<span style="color: rgb(33, 37, 41); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);">the
timelock structures containing the event-related averages of all subjects. </span></p>
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ERF_orig contains allsubjFIC and allsubjFC, each storing the event-related averages for the fully incongruent, and the fully congruent sentence endings, respectively.</p>
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The format for these variables, are a prime example of how you should organise your data to be suitable for ft_XXXstatistics. Specifically, each variable is a cell-array of structures, with each subject’s averaged stored in one cell. To create this data structure
two steps are required. First, the single-subject averages were calculated individually for each subject using the function <a href="https://github.com/fieldtrip/fieldtrip/blob/release/ft_timelockanalysis" style="box-sizing: border-box; color: rgb(176, 37, 44); text-decoration-line: none; background-color: transparent;">ft_timelockanalysis</a>.
Second, using a for-loop we have combined the data from each subject, within each condition, into one variable (allsubj_FIC/allsubj_FC). We suggest that you adopt this procedure as well."</p>
<p style="box-sizing: border-box; margin-bottom: 1rem; text-align: justify; color: rgb(33, 37, 41); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 16px; background-color: rgb(255, 255, 255);">
<br>
</p>
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Now my question regards the timelock structure. How should it be organized and which fields should it contain?</p>
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Should it be obtained by specifying cfg.keeptrials?</p>
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Actually just having a look at the structure organization would solve my problem. </p>
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<br>
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Thanks all for your time, </p>
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Best, </p>
<p style="box-sizing: border-box; margin-bottom: 1rem; text-align: justify; color: rgb(33, 37, 41); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 16px; background-color: rgb(255, 255, 255);">
Umberto<br>
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<p><span style="color: rgb(33, 37, 41); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 16px; text-align: justify; background-color: rgb(255, 255, 255);"></span><br>
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