Version 1.12.0.dev94+g03436ebac (development) (2026-03-04)

Dependencies

• Updated minimum for:

  • Core dependency scipy >= 1.12

  • Optional dependency pandas >= 2.2

  • Optional dependency scikit-learn >= 1.4

  Changed implemented via CI action created by Thomas Binns. (#13611)

Bugfixes

• Fix bug where outdated seghead.mgz files were reused in mne.bem.make_scalp_surfaces(). Add a new parameter reuse_seghead to control whether to reuse existing seghead.mgz files, by Victor Ferat. (#13024)

• Preserve kit_system_id in forward-solution Info, by new contributor Melih Yayli. (#13520)

• Fix bug preventing mne.time_frequency.read_spectrum() from reading saved mne.time_frequency.Spectrum objects created from mne.time_frequency.EpochsSpectrum.average(), by Thomas Binns. (#13521)

• Fix bug where mne.chpi.refit_hpi() did not take gof_limit into account when fitting HPI order, by Eric Larson (#13525)

• Fix bug preventing reading of mne.time_frequency.Spectrum and mne.time_frequency.BaseTFR objects created in MNE<1.8 using the deprecated subject info birthday tuple format, by Thomas Binns. (#13526)

• Fix bug where invalid date formats passed to mne.Info.set_meas_date() were not caught, by Thomas Binns. (#13528)

• Fix bug with mne coreg where interactively altered MRI fiducials were not used when scaling a surrogate subject, by Eric Larson. (#13539)

• Fix bug with mne.viz.plot_evoked() where channels were plotted above axis spines, by Michael Straube. (#13549)

• Fix axis limits in mne.preprocessing.eyetracking.Calibration.plot() to use screen resolution if available, by new contributor Gnaneswar Lopinti. (#13558)

• Fix bug with montage test error message checking, by Eric Larson. (#13579)

• Fix bug where mne.viz.plot_evoked_white() did not accept a single “meg” rank value like those returned from mne.compute_rank(), by Eric Larson. (#13595)

• Fix bug where mne.viz.plot_raw() would access incorrect matplotlib attributes, by new contributor Thomas Caswell. (#13606)

• Fix mne.io.read_raw_snirf() raising TypeError when landmarkLabels is empty or scalar, by Bruno Aristimunha. (#13628)

• Fix bug with mne.datasets.somato.data_path() where the archive couldn’t be extracted due to an absolute path issue, by Eric Larson. (#13630)

• Fix bug in mne.Epochs.plot() where clicking on the scrollbar would not scroll to the last epoch, by Clemens Brunner. (#13654)

• Expose mne.bem namespace, which was inadverdently removed in MNE version 1.5. As an example, users can once again use the mne.bem.make_watershed_bem API entrypoint, by Scott Huberty. (#13669)

• Allow reading alternative nasion label (“Nz”) in SNIRF files when parsing landmarkPos3D, by new contributor Aniket Singh Yadav. (#13672)

New features

• Add support for mne.io.Raw.interpolate_to() and related methods (and mne.channels.read_meg_canonical_info()) for interpolating MEG data across systems, by new contributor Konstantinos Tsilimparis. (#13196)

• Add support for multi-wavelength NIRS processing to mne.preprocessing.nirs.beer_lambert_law(), mne.preprocessing.nirs.scalp_coupling_index(), and SNIRF reader mne.io.read_raw_snirf(), by new contributor Tamas Fehervari. (#13408)

• Add an optional show_channel_names parameter to mne.viz.plot_alignment() to overlay channel labels at sensor locations in the 3D alignment view, by new contributor Aman Srivastava. (#13570)

• Add mne.io.read_raw_mef() for reading MEF3 files, supporting BIDS iEEG data formats, by Bruno Aristimunha. (#13610)

• Add finer-grained control to mne.io.anonymize_info() and the related methods mne.io.Raw.anonymize(), mne.Epochs.anonymize(), and mne.Evoked.anonymize() by allowing keep_his to accept one or more strings; keep_his=True remains unchanged (retaining "his_id", "sex", and "hand" from anonymization), but individual fields can now also be retained (the default keep_his=False also remains unchanged and still anonymizes all fields), by Clemens Brunner. (#13647)

Other changes

• Created a quality control report tutorial Quality control (QC) reports with mne.Report, by new contributor varshaa-1616. (#13532)

• Improved docs for mne.io.read_raw_nirx(), by new contributor Natneal B. (#13541)

• Refactor f-strings in mne/tests/test_import_nesting.py, by new contributor Shruti Bhale. (#13551)

• Remove legacy Python-version compatibility checks in mne.utils.misc._empty_hash now that usedforsecurity=False is always supported, by new contributor Varun Kasyap Pentamaraju (#13566). (#13566)

• Fix deprecation of setting a shape on an array directly in numpy 2.5+, by Mathieu Scheltienne. (#13585)

• Documentation improvement for eSSS in docstring mne.preprocessing.maxwell_filter() and in the MaxFilter example by Simon Kern. (#13591)

• make mne.sys_info() work on Windows systems with Powershell version 7+, by Marijn van Vliet (#13593)

• Examples Using <some-method> section quirk fix in documentation, by new contributor Himanshu Mahor. (#13596)

• Code refactor in mne.preprocessing.eyetracking.set_channel_types_eyetrack(), by Himanshu Mahor. (#13602)

• Improve documentation of return values to clarify that methods typically return the original instance type for chaining purposes, by Aniket Singh Yadav. (#13674)

• Add mne.Epochs.reset_index(), which replaces the legacy mne.Epochs.reset_drop_log_selection() (the new name better reflects the method’s purpose), by Clemens Brunner. (#13675)