mne_sss_data.h File Reference

Signal Space Separation (Maxwell filter) basis metadata stored alongside MEG raw data. More...

#include "mne_global.h"
#include <memory>
#include <Eigen/Core>
#include <QSharedPointer>
#include <QTextStream>
#include <QDebug>

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Classes
class	MNELIB::MNESssData
	Container for Signal Space Separation (SSS/Maxwell filtering) expansion coefficients and metadata. More...

Namespaces
namespace	FIFFLIB
	FIFF file I/O, in-memory data structures and high-level readers/writers.
namespace	MNELIB
	Core MNE data structures (source spaces, source estimates, hemispheres).

Detailed Description

Signal Space Separation (Maxwell filter) basis metadata stored alongside MEG raw data.

SPDX-License-Identifier: BSD-3-Clause Copyright (c) 2026 MNE-CPP Authors

Author

Christoph Dinh chris.nosp@m.toph.nosp@m..dinh.nosp@m.@mne.nosp@m.-cpp..nosp@m.org

Since

2.0.0

Date

March 2026

MNELIB::MNESssData captures the inside/outside basis orders (LIn, LOut), the device-to-head transformation in effect at the time of Maxwell filtering and the multipole moments computed by MaxFilter. The information lives in FIFFB_SSS_INFO / FIFFB_SSS_CAL_ADJUST blocks and is required to keep downstream forward / inverse computations consistent with the SSS-filtered data.

Definition in file mne_sss_data.h.