Fails to discover crucial info from BEP032

[yarikoptic]

not sure if just not somehow side effect of

• still considered BEP032 closed #193

as "thinking" that all info is now in main bids-specification but with my hope for it to figure out what nwb is the right file format, it got us into totally opposite way: recommending

File Format: Neuropixels data should be stored in a standardized binary or open format. Common formats include:

• .bin (raw binary files)
• .npy (NumPy format)
• Other open formats that preserve the raw data

full dialog

I'll search for information about neuropixels data formatting in BIDS, as this is likely covered by a BIDS Extension Proposal (BEP).Let me search for microelectrode electrophysiology, which is the broader category that would include neuropixels:## Neuropixels and Microelectrode Electrophysiology in BIDS

Neuropixels data falls under microelectrode electrophysiology, which is covered by BEP032. Here's what I found:

BEP032: Microelectrode electrophysiology is currently closed (meaning it has been finalized and merged into the specification). This BEP provides the standard for organizing high-density microelectrode recordings, including neuropixels probes.

Key resources:

• PR #1705: [ENH] microelectrode electrophysiology specification (BEP032) bids-standard/bids-specification#1705
• Preview documentation: https://bids-specification--1705.org.readthedocs.build/en/1705/modality-specific-files/microelectrode-electrophysiology.html

The specification covers:

• File naming conventions for microelectrode recordings
• Required and recommended metadata
• Electrode coordinate specifications
• Data format requirements

What you should know:

• Neuropixels data should be organized following the microelectrode electrophysiology standard
• Electrode positions and probe information must be documented
• Metadata about the recording setup (sampling rate, gain, filtering, etc.) is required

Would you like me to retrieve the full microelectrode electrophysiology documentation to show you specific file naming conventions and metadata requirements for neuropixels data?

but if it even looked at even that closed 1705 - it would have discovered nwb

[neuromechanist]

May I know what was the question, I don't say it in the full dialogue. Was it about NWB format?

When asked:

Does BIDS support NWB file format? It did not find iEEG, understandable, because does not know to search within the modalities:

full dialog

I'll search the BIDS documentation and discussions to find information about NWB (Neurodata Without Borders) format support.Based on the BIDS specification, **NWB is not currently an officially supported file format in BIDS**. Here's what you need to know:

Current BIDS File Format Support

BIDS specifies particular file formats for different data types:

• Imaging data (MRI, PET, etc.): NIfTI format (.nii/.nii.gz)
• Electrophysiology (EEG, MEG, iEEG): Format-specific files (EDF, BrainVision, FIF, etc.)
• Tabular data: TSV (tab-separated values)
• Metadata: JSON

NWB and BIDS Interoperability

While NWB is not a native BIDS format, there are some considerations:

1. NWB is primarily for electrophysiology and behavioral data and serves a similar purpose to BIDS for organizing complex neural recordings with metadata.

2. Tools exist for conversion between NWB and BIDS formats, though this is an active area of development in the neuroscience community.

3. If you have NWB data, you would need to convert it to BIDS-compatible formats (e.g., EDF, BrainVision for EEG; TSV for behavioral data) before organizing it as a BIDS dataset.

Next Steps

• What data modality are you working with (EEG, MEG, iEEG, behavioral)?
• Are you trying to convert existing NWB files to BIDS, or organize new data?
• Would you like recommendations for conversion tools for your specific data type?

When specifically asked:
What modalities in BIDS support NWB format? It indeed found iEEG

full dialog

I'll search the BIDS documentation to find information about NWB (Neurodata Without Borders) format support across modalities.Based on the BIDS specification, **NWB (Neurodata Without Borders) format is supported for iEEG data only**.

iEEG Support

The intracranial electroencephalography (iEEG) modality explicitly lists .nwb as an accepted file format. According to the specification, each iEEG recording can consist of a single .nwb file.

The iEEG specification notes that NWB is one of several supported formats alongside:

• European Data Format (.edf)
• BrainVision Core Data Format (.vhdr, .vmrk, .eeg)
• EEGLAB (.set, .fdt)
• MEF3 (.mefd)

EEG Does Not Support NWB

Notably, scalp EEG does not currently support NWB format in BIDS. EEG data is limited to .edf, .vhdr/.vmrk/.eeg, .set/.fdt, and .bdf formats.

Next Steps

Are you working with iEEG data and considering NWB format? Or are you interested in extending BIDS to support NWB for other modalities? I can help with conversion guidance or point you toward relevant BEPs if you're interested in extending the specification.

I am increasingly intrigued to start using Fuzzy Finding RAG systems as a complementary method or the main method to retrieve information. That might be a good practice. I have to do some experiments with it.

[neuromechanist]

Also related to #179

[yarikoptic]

I think it might very relate to the model used here as well since nwb is indeed not that prominent file format in BIDS -- used only for ieeg along with other formats so easy to miss in the text. I didn't check -- do you point to the BIDS schema et all? I think it might be a better structure for the thing to digest if we tell how to relate to the text etc.

As for original prompt,

a badly formatted text version of the entire dialog -- I highlighted my two questions

Hi! I'm the BIDS Assistant. I can help with Brain Imaging Data Structure (BIDS), data organization, validation, and related tools.

You: what do you know about formatting of neuropixels data?

BIDS Assistant

I'll search for information about neuropixels data formatting in BIDS, as this is likely covered by a BIDS Extension Proposal (BEP).Let me search for microelectrode electrophysiology, which is the broader category that would include neuropixels:## Neuropixels and Microelectrode Electrophysiology in BIDS

Neuropixels data falls under microelectrode electrophysiology, which is covered by BEP032. Here's what I found:

BEP032: Microelectrode electrophysiology is currently closed (meaning it has been finalized and merged into the specification). This BEP provides the standard for organizing high-density microelectrode recordings, including neuropixels probes.

Key resources:

PR #1705: bids-standard/bids-specification#1705
Preview documentation: https://bids-specification--1705.org.readthedocs.build/en/1705/modality-specific-files/microelectrode-electrophysiology.html
The specification covers:

File naming conventions for microelectrode recordings
Required and recommended metadata
Electrode coordinate specifications
Data format requirements
What you should know:

Neuropixels data should be organized following the microelectrode electrophysiology standard
Electrode positions and probe information must be documented
Metadata about the recording setup (sampling rate, gain, filtering, etc.) is required
Would you like me to retrieve the full microelectrode electrophysiology documentation to show you specific file naming conventions and metadata requirements for neuropixels data?

You: what about data format requirements for such data?
BIDS Assistant

Let me retrieve the detailed microelectrode electrophysiology documentation to show you the specific data format requirements:It appears the microelectrode electrophysiology documentation isn't yet in the stable release. Since BEP032 was recently finalized, let me check what's available in the current specification. The microelectrode electrophysiology standard may still be in the development branch.

What I can tell you about neuropixels data format requirements:

Based on BIDS principles and the BEP032 proposal:

File Format: Neuropixels data should be stored in a standardized binary or open format. Common formats include:

• .bin (raw binary files)

• .npy (NumPy format)

• Other open formats that preserve the raw data

Accompanying Metadata Files:

• JSON sidecar (*_ephys.json): Contains acquisition parameters (sampling rate, gain, filtering, etc.)

• Channels file (*_channels.tsv): Describes each electrode channel

• Electrodes file (*_electrodes.tsv): Specifies 3D coordinates of each electrode

Key Metadata Requirements:

• SamplingFrequency (in Hz)

• Gain (conversion factor)

• LowCutoff and HighCutoff (filtering information)

• Electrode coordinates (x, y, z, and brain area)

Follow-up questions:

Are you converting existing neuropixels data to BIDS format?
Do you need help with specific metadata fields or file naming?
Would you like information about tools that can help with neuropixels-to-BIDS conversion?

[neuromechanist]

Right now the assistant is very much optimized to use anthropic models, and by default uses Haiku. The optimizations make sure that there is as much caching as possible to save costs. We also have adjusted the prompts, so we go to the details if the user has expressed interest. I am not sure why it couldn't pick up the NWB format from the markdown that it has from BEP032.

[neuromechanist]

Closing this issue since it is now addressing this question correctly:

I'll search for information about neuropixels data formatting in BIDS, as this is likely covered by a BIDS Extension Proposal (BEP).Let me search for microelectrode electrophysiology, which is the broader category that would include neuropixels:Great! BEP032: Microelectrode electrophysiology is the relevant proposal for neuropixels and similar microelectrode data. Here's what I can tell you:

Current Status

BEP032 is currently in proposed status (under review), which means it's not yet part of the official BIDS specification but is actively being developed. You can view the full proposal at the preview link above.

Key Information

• Leads: Sylvain Takerkart, Benjamin Dichter, Yaroslav O. Halchenko, Lyuba Zehl, Andrew Davison
• GitHub PR: [ENH]: BEP032 formal review bids-standard/bids-specification#2307
• Live Preview: https://bids-specification--2307.org.readthedocs.build/en/2307/modality-specific-files/microelectrode-electrophysiology.html

What This Covers

BEP032 defines BIDS conventions for microelectrode electrophysiology data, which includes neuropixels probes and similar high-density electrode arrays. It specifies:

• File naming conventions for microelectrode recordings
• Required and recommended metadata
• Electrode position specifications
• Data format requirements

Next Steps

Since this is still a proposed extension, I'd recommend:

1. Review the preview documentation to see the current specification
2. Check the GitHub PR for ongoing discussions and feedback
3. Consider the draft BEP026 if you need an alternative reference

Would you like me to search for any discussions or issues related to BEP032, or do you have specific questions about electrode positioning, file formats, or metadata requirements?