inv_signal_model.h File Reference

Sinusoidal HPI signal model — builds and inverts the regressor matrix that extracts coil amplitudes from MEG data. More...

#include "../inv_global.h"
#include "inv_hpi_model_parameters.h"
#include <QSharedPointer>
#include <Eigen/Core>

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Classes
class	INVLIB::InvSignalModel
	Generates the forward sinusoidal model matrix for HPI coil signals at known drive frequencies. More...

Namespaces
namespace	INVLIB
	Inverse source estimation (MNE, dSPM, sLORETA, dipole fitting).

Detailed Description

Sinusoidal HPI signal model — builds and inverts the regressor matrix that extracts coil amplitudes from MEG 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

INVLIB::InvSignalModel builds the model matrix that pairs the HPI coil drive frequencies (and, optionally, the line-frequency harmonics) with the sample window length defined by the input data. Inverting the model with a pseudo-inverse projects the MEG buffer onto the per-coil amplitudes that InvHpiFit feeds into the dipole search. The model matrix is cached and re-derived only when the InvHpiModelParameters change or the number of samples in the buffer changes.

Definition in file inv_signal_model.h.