I would like to share data sets from three different experiments that include simultaneous electroencephalography (EEG) and electrospinography (ESG) recordings. At the moment ESG channels are classified as MISC channels. However, I would still like to add the locations of ESG. I have between 40 and 80 ESG channels and since there is no standard for naming their position remains unclear. I do not know how to best add the locations of the electrode over the spinal cord in the BIDS format. Any recommendations?
Hi @Birgit, you could add a custom column to the
electrodes.tsv file in which you enter “codes” corresponding to positions. Then you would explain these codes in an accompanying
For example this could be a TSV file, with
ABC1 being an electrode:
name x y z spin_loc type
ABC1 n/a n/a n/a code2 spinal
And this could be a part of the JSON file:
"Description": "General description of how locations"
"code2": "description of the location meant by 'code2'"
For the real data you’d have many more rows (and potentially columns) in the TSV file, and more entries in the JSON file → especially more “Levels” for the “spin_loc” entry in the JSON file.
Thank you @sappelhoff, this is very helpful!