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Hi Emmanuelle,
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<div class=""> " <em class="">matrix to combine electrodes into channels</em> “ means that each row in the matrix contains a set of weights that is used to linearly combine the contribution of individual electrodes - i.e. the entities that have a physical location
on the scalp, and which in the original recording measure the potential difference with respect to the physical reference electrode - into the signal that is represented at the channels - i.e. the more flexible representation of the signal, after software
rereferencing, independent component backprojection etc.</div>
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<div class="">Best wishes,</div>
<div class="">Jan-Mathijs </div>
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<div class="">On 11 May 2022, at 11:30, Emmanuelle Kristensen via fieldtrip <<a href="mailto:fieldtrip@science.ru.nl" class="">fieldtrip@science.ru.nl</a>> wrote:</div>
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<div class="">Hi everyone,<br class="">
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<div class="">I don't understand, for EEG data, what does sens.tra correspond to. what does "<!--StartFragment-->
<em class="">matrix to combine electrodes into channels</em><!--EndFragment--> " mean, please?<br data-mce-bogus="1" class="">
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<div class="">Regards,<br data-mce-bogus="1" class="">
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<div class="">Emmanuelle<br class="">
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<div data-marker="__SIG_PRE__" class="">-- <br class="">
+------------------------------------------------------------+<br class="">
Emmanuelle KRISTENSEN<br class="">
IR CNRS, GIPSA-Lab<br class="">
Pôle Technique - Service Logiciel<br class="">
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GIPSA-Lab<br class="">
11 rue des Mathématiques<br class="">
BP46<br class="">
38402 SAINT MARTIN D'HERES CEDEX<br class="">
bureau : B233<br class="">
+33 6 26 86 54 06<br class="">
+------------------------------------------------------------+</div>
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