- metadata in JSON

- fMRI to BIDS, MEG BIDS
	- python package MEG to BIDS

- dcm2nifti creates some metadata
	- maybe use it downstream

- BIDS
	- created by OpenfMRI / OpenNeuro?
	- data files organized by subjects
	- participants both in json and tsv?
	- nibits, some tools fill participants.tsv, dataset.json

	- derivatives, source data