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<p class="MsoNormal">Dear Community,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">My name is Chris Schneider, and I am a postdoc working on EEG-based Brain-Computer Interfaces. Recently I discovered the extremely useful feature of transforming my datasets into a BIDS-compatible format for publishing
the data on the OpenNEURO platform.<br>
<br>
I have figured out how to set all the fields I want and need, except one: the “HardwareFilters” for the eeg.json files. In the data2bids.m file it is written that this field should contain a <<List of hardware (amplifier) filters applied or ideally key:value
pairs of pre-applied filters and their parameter values>>. In the meg section the explanation is more detailed <<List of temporal hardware filters applied. Ideally key:value pairs of pre-applied hardware filters and their parameter values: e.g., {"HardwareFilters":
{"Highpass RC filter": {"Half amplitude cutoff (Hz)": 0.0159, "Roll-off": "6dB/Octave"}}}. Write n/a if no hardware filters applied.>><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I know that the structure in the final .json file should look like this:<br>
<img width="244" height="107" style="width:2.5416in;height:1.1145in" id="_x0037_9965741-7568-4204-A6D0-8909F14D265F" src="cid:image001.png@01D56273.E266D9D0"><br>
<br>
However, I was not successful in finding the right way of setting the attribute for the save2bids.m. I tried copy-pasting the example given for the meg, but it resulted in an error complaining about the colons not being strings. Then I converted the information
into MATLAB key:value pairs, but this also resulted in a parsing error when preparing the json structure. Finally, I also tried to just pass it as a string, but then it gets written as one continuous string also in the json – and not in the requested key-value
pairs (as in the image above).<br>
<br>
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am out of ideas now short of implementing my own script for writing the json file. I would really appreciate to know if anybody successfully set this attribute in the save2bids.m , and if so, how. Thank you already
very much in advance!<br>
<br>
Best,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Chris<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:FR-CH">Christoph Schneider, PhD<br>
Assistant de recherche<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:FR-CH">Laboratoire de Neurorééducation aigüe (LNRA)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:FR-CH">Département des Neurosciences Cliniques (DNC)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:FR-CH">Centre Hospitalier Universitaire Vaudois (CHUV)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:FR-CH">Lausanne, Switzerland<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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