Using optically pumped magnetometers to replicate task-related responses in next generation magnetoencephalography

被引：3
|
作者：
Safar, Kristina [1 ,2 ]
Vandewouw, Marlee M. [1 ,2 ,3 ,4 ]
Sato, Julie [1 ,2 ]
Devasagayam, Jasen [2 ]
Hill, Ryan M. [5 ,6 ]
Rea, Molly [5 ,6 ]
Brookes, Matthew J. [5 ,6 ]
Taylor, Margot J. [1 ,2 ,7 ,8 ]
机构：
[1] Hosp Sick Children, Dept Diagnost Imaging, 555 Univ Ave, Toronto, ON M5G 1X8, Canada
[2] Hosp Sick Children, Program Neurosci & Mental Hlth, Toronto, ON, Canada
[3] Holland Bloorview Kids Rehabil Hosp, Bloorview Res Inst, Autism Res Ctr, Toronto, ON, Canada
[4] Univ Toronto, Inst Biomed Engn, Toronto, ON, Canada
[5] Univ Nottingham, Sir Peter Mansfield Imaging Ctr, Sch Phys & Astron, Nottingham, Nottinghamshire, England
[6] Cerca Magnet Ltd, Castlebridge Off Village, Kirtley Dr, Nottingham, England
[7] Univ Toronto, Dept Med Imaging, Toronto, ON, Canada
[8] Univ Toronto, Dept Psychol, Toronto, ON, Canada
来源：
SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期
基金：
加拿大健康研究院;
关键词：
MEG; CONNECTIVITY; FACES; MRI;
D O I：
10.1038/s41598-024-56878-6
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Optically pumped magnetometers (OPMs) offer a new wearable means to measure magnetoencephalography (MEG) signals, with many advantages compared to conventional systems. However, OPMs are an emerging technology, thus characterizing and replicating MEG recordings is essential. Using OPM-MEG and SQUID-MEG, this study investigated evoked responses, oscillatory power, and functional connectivity during emotion processing in 20 adults, to establish replicability across the two technologies. Five participants with dental fixtures were included to assess the validity of OPM-MEG recordings in those with irremovable metal. Replicable task-related evoked responses were observed in both modalities. Similar patterns of oscillatory power to faces were observed in both systems. Increased connectivity was found in SQUID-versus OPM-MEG in an occipital and parietal anchored network. Notably, high quality OPM-MEG data were retained in participants with metallic fixtures, from whom no useable data were collected using conventional MEG.
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页数：12
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