Get involved in making BIDS better

The easiest way to contribute to BIDS is to ask questions you have about the specification on Neurostars If your question has a bids tag it will be much easier for others to find the answer.

You can also get involved by answering questions on Neurostars!

You can contribute to the BIDS specification by opening Issues and propose changes via Pull Requests on GitHub.

To make improvements to the website that you are reading right now, you can also open an Issue and propose changes via Pull Requests at its GitHub repository.

There are so many ways to help us build this community. You could help someone else learn the benefits of BIDS, give a talk in your local organisation, or build a BIDS App!

The only requirement is that everyone who contributes adheres to our BIDS Code of Conduct.

Thank you for your contributions!

Extending the BIDS specification

The BIDS specification can be extended in a backwards compatible way and will evolve over time. These are accomplished with BIDS Extension Proposals (BEPs), which are community-driven processes.

Do you want to extend BIDS to a new modality or set of data types? Please draft a BIDS Extension Proposal (BEP) following the BIDS Extension Proposals Guide.

You can also contribute to ongoing BIDS Extension Proposals. Below is a table of currently-active BEPs. The “Extension label” column provides a direct link to the documentation.

Note that all of the extension ideas that are not backwards compatible and thus will have to wait for BIDS 2.0 are listed here.

Extension label Title Moderators/ leads Summary Blocking point(s)
BEP001 Structural acquisitions that include multiple contrasts (multi echo, flip angle, inversion time) sequences Gilles de Hollander and Kirstie Whitaker The draft BEP is nearly ready to be submitted as a PR. A few items need to be revised and a final decision made.
BEP002 The BIDS Models Specification Tal Yarkoni Working with the computational models group for consistency. Starting with fMRI then extend to other modalities. An item that is blocking progress is transformed data.
BEP003 Common Derivatives Chris Markiewicz Final reviews by the community None.
BEP004 Susceptibility Weighted Imaging (SWI) Available Looking for a new leader. Searching for a new leader.
BEP005 Arterial Spin Labeling (ASL) Henk-Jan Mutsaerts and Michael Chappell Nearly completed with a working validator and finishing the manuscript. None.
BEP009 Positron Emission Tomography (PET) Melanie Ganz Very close to completion. This includes finalizing the standard and writing the paper. None.
BEP011 The structural preprocessing derivatives Andrew Hoopes Have finalized the surface-based and volumetric overlays (and stats), differentiate between discrete and probabilistic segmentation. The next step for this BEP is standardizing the universal look-up table and characterizing surfaces. None.
BEP012 The functional preprocessing derivatives Camille Maumet and Chris Markiewicz   None.
BEP013 The resting state fMRI derivatives Steven Giavasis Merged into BEP012 None.
BEP014 The affine transformations and nonlinear field warps Oscar Esteban A new file format (X5) to store spatial transforms is being created, and a draft proposal has been discussed under the scope of this BEP. A software prototype demonstrating X5 is currently under development. In progress.
BEP016 The diffusion weighted imaging derivatives Franco Pestilli and Oscar Esteban Being discussed in a GitHub repository  
BEP017 Generic BIDS connectivity data schema Eugene Duff and Paul McCarthy This BEP is searching for a reviewer with fresh eyes that understands the scope of this BEP. None.
BEP018 Genetic information Cyril R Pernet, Clara Moreau, and Thomas Nichols Submitted a pull request for review. None.
BEP019 DICOM Metadata Satrajit Ghosh Not active - perhaps this is in the 20% of use cases. Could be a NIDM extension rather than in BIDS. None.
BEP020 Eye Tracking including Gaze Position and Pupil Size(ET) Benjamin Gagl and Dejan Draschkow Nearly complete. None.
BEP021 Common Electrophysiological Derivatives Mainak Jas, Stefan Appelhoff, Cyril Pernet, Robert Oostenveld Work has resumed since merging in EEG and iEEG. Next steps are to distribute a survey to gather what derivatives researchers care about, create example datasets to understand practical issues, and updates to the validator. A few blocking items is what file format may be best suited and annotations.
BEP022 Magnetic Resonance Spectroscopy (MRS) Dickson Wong This is stalled effort, but trying to restart. Looking for contributors.  
BEP023 PET Preprocessing derivatives Martin Noergaard, Graham Searle, Melanie Ganz Work is paused until BEP009 manuscript has been submitted/accepted. A blocking item is the need for more contributors, especially from senior PET experts.
BEP024 Computed Tomography scan (CT) Hugo Boniface This effort has stalled and looking for more contributors and experts. None.
BEP025 Medical Population Imaging Data structure (MIDS) Jose Manuel Saborit Torres, Maria de la Iglesia Vayá This BEP is working on the automated recognition of the DICOM sequence and writing the manuscript. None.
BEP026 Microelectrode Recordings (MER) Greydon Gilmore Active effort. Looking for thoughts and contributions None.
BEP027 BIDS Execution Chris Markiewicz and Greg Kiar artial draft seeking community input and fleshing out of some details. Examples and tooling should be available prior to release to demonstrate viability. None.

When an extension reaches maturity it is merged into the main body of the specification. Below is a table of BEPs that have been merged in the main body of the specification.

Extension label Title Moderators/leads
BEP006 Electroencephalograpgy (EEG) Cyril Pernet, Stefan Appelhoff, Robert Oostenveld
BEP007 Hierarchical Event Descriptor (HED) Tags Chris Gorgolewski
BEP008 Magnetoencephalography (MEG) Guiomar Niso
BEP010 intracranial Electroencephalograpgy (iEEG) Chris Holdgraf, Dora Hermes

Some proposals that set out to extend the BIDS specification have instead become tools for handling BIDS. See the table below.

Extension label Title Moderators/leads Tool name
BEP015 Mapping file Eric Earl, Camille Maumet, and Vasudev Raguram File mapper