lfpack — LFP codec for Neuropixels recordings
Lossy codec for local-field-potential (LFP) recordings from Neuropixels probes. Achieves >100× compression with median RMSE < 25 µV via an 8-stage pipeline (bad-channel detection → dephasing → highpass → interpolation → CAR → decimation → Cadzow → adaptive SVD + wavelet-packet thresholding).
IBL Brain-Wide Map LFP dataset — 699 recordings, 384 channels, session-clock aligned. How to access →
pip install lfpack
Visualise with viewephys
viewephys opens lfpack .h5 files natively —
viewephys -f recording.h5 gets you a browsable, brain-region-coloured view with no
manual decompression step:
See the BWM how-to for details.
Documentation
Full documentation is at https://int-brain-lab.github.io/lfpack/.
| Section | Contents |
|---|---|
| Tutorial | End-to-end compression and decompression of a recording |
| How-To: binned reads | Memory-efficient channel-binned access |
| How-To: multi-recording files | Combining multiple recordings in one HDF5 file |
| API reference | Full public API (compress_bin_to_h5, LFPackReader, …) |
| HDF5 format | On-disk layout specification |
| Pipeline explanation | Stage-by-stage description of the compression pipeline |
| SVD+WP benchmark | RMSE, SNR, and compression-ratio results across 11 insertions |
Help and Feedback
Have a question, found an issue, or want to share feedback? Please open an issue on GitHub. We welcome bug reports, questions, suggestions, and other feedback.
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