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Bias-correction subspace projection method for background noise suppression in OPM-MEG systems

Release time:2026-09-13| Hits:

Impact Factor:5.3

DOI number:10.1016/j.neuroimage.2026.122112

Affiliation of Author(s):仪器科学与光电工程学院

Teaching and Research Group:大科学装置研究院

Journal:NeuroImage

Key Words:OPM-MEG; Background noise suppression; Sensor noise coupling; Spatial filtering

Abstract:The Magnetoencephalography (MEG) based on optically pumped magnetometers (OPMs) has emerged as a transformative wearable neuroimaging modality, offering significant advantages such as flexible sensor placement and closer proximity to neural sources. However, these very characteristics impose more stringent requirements on the environmental noise suppression. Among spatial filtering approaches, signal space projection (SSP) estimates the noise subspace directly from empty-room recordings and can be implemented without dense spatial sampling, detailed sensor-geometry modeling, or subject-specifi

Co-author:Haifeng Zhang, Fengwen Zhao, Ruonan Wang, Yutong Wei, Yujie Ma, Shiqiang Zheng

First Author:Fudan Zhao

Indexed by:Journal paper

Discipline:工学

First-Level Discipline:Instrumentation Science and Technology

Document Type:J

Volume:338

Page Number:122112

ISSN No.:1053-8119

Translation or Not:no

Date of Publication:2026-09-01