Extended Signal-Space Separation Method for Improved Interference Suppression in MEG

• Published in: IEEE transactions on biomedical engineering Vol. 68; no. 7; pp. 2211 - 2221
• Main Authors: Helle, Liisa, Nenonen, Jukka, Larson, Eric, Simola, Juha, Parkkonen, Lauri, Taulu, Samu
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Calibration; Data analysis; Dipoles; Epilepsy; External interference; Head movement; Interference; Interference suppression; Magnetic fields; Magnetic noise; Magnetic sensors; Magnetic separation; Magnetic shielding; Magnetoencephalography; principal component analysis; Sensor arrays; Separation; signal processing; signal-space separation

Objective: Magnetoencephalography (MEG) signals typically reflect a mixture of neuromagnetic fields, subject-related artifacts, external interference and sensor noise. Even inside a magnetically shielded room, external interference can be significantly stronger than brain signals. Methods such as si...