Results 11 to 20 of about 2,930 (181)

Vector magnetocardiography using compact optically-pumped magnetometers [PDF]

Heliyon, 2023
Optically pumped magnetometers can provide functionality for bio-magnetic field detection and mapping. This has attracted widespread attention from researchers in the biomedical science field. Magnetocardiography has been proven to be an effective method
Shengran Su, Zhenyuan Xu, Xiang He, Guoyi Zhang, Haijun Wu, Yalan Gao, Yueliang Ma, Chanling Yin, Yi Ruan, Kan Li, Qiang Lin   +10 more
doaj   +4 more sources

Peripheral Nerve Magnetoneurography With Optically Pumped Magnetometers [PDF]

Frontiers in Physiology, 2022
Electrodiagnosis is routinely integrated into clinical neurophysiology practice for peripheral nerve disease diagnoses, such as neuropathy, demyelinating disorders, nerve entrapment/impingement, plexopathy, or radiculopathy.
Yifeng Bu, Jacob Prince, Hamed Mojtahed, Donald Kimball, Vishal Shah, Todd Coleman, Mahasweta Sarkar, Ramesh Rao, Mingxiong Huang, Peter Schwindt, Amir Borna, Imanuel Lerman, Imanuel Lerman, Imanuel Lerman   +13 more
doaj   +7 more sources

Muscle Fatigue Revisited – Insights From Optically Pumped Magnetometers [PDF]

Frontiers in Physiology, 2021
So far, surface electromyography (sEMG) has been the method of choice to detect and evaluate muscle fatigue. However, recent advancements in non-cryogenic quantum sensors, such as optically pumped magnetometers (OPMs), enable interesting possibilities to
Davide Sometti, Davide Sometti, Davide Sometti, Davide Sometti, Lorenzo Semeia, Lorenzo Semeia, Sangyeob Baek, Sangyeob Baek, Hui Chen, Hui Chen, Giulia Righetti, Giulia Righetti, Giulia Righetti, Giulia Righetti, Juergen Dax, Juergen Dax, Cornelius Kronlage, Milena Kirchgässner, Alyssa Romano, Johanna Heilos, Deborah Staber, Julia Oppold, Thomas Middelmann, Christoph Braun, Christoph Braun, Christoph Braun, Christoph Braun, Philip Broser, Justus Marquetand, Justus Marquetand, Justus Marquetand   +30 more
doaj   +8 more sources

On-scalp magnetocorticography with optically pumped magnetometers: Simulated performance in resolving simultaneous sources [PDF]

NeuroImage: Reports, 2022
Currently, the gold standard for high-resolution mapping of cortical electrophysiological activity is invasive electrocorticography (ECoG), a procedure that carries with it the risk of serious morbidity and mortality.
Allison C. Nugent, Amaia Benitez Andonegui, Tom Holroyd, Stephen E. Robinson   +3 more
doaj   +4 more sources

Quantitative 2D Magnetorelaxometry Imaging of Magnetic Nanoparticles Using Optically Pumped Magnetometers [PDF]

Sensors, 2020
For biomagnetical applications exploiting physical properties of magnetic nanoparticles (MNP), e.g., magnetic hyperthermia, knowledge about the quantitative spatial MNP distribution is crucial, which can be extracted by magnetorelaxometry (MRX) imaging ...
Aaron Jaufenthaler, Peter Schier, Thomas Middelmann, Maik Liebl, Frank Wiekhorst, Daniel Baumgarten   +5 more
doaj   +4 more sources

Cross-Axis projection error in optically pumped magnetometers and its implication for magnetoencephalography systems [PDF]

NeuroImage, 2022
Optically pumped magnetometers (OPMs) developed for magnetoencephalography (MEG) typically operate in the spin-exchange-relaxation-free (SERF) regime and measure a magnetic field component perpendicular to the propagation axis of the optical-pumping ...
Amir Borna, Joonas Iivanainen, Tony R. Carter, Jim McKay, Samu Taulu, Julia Stephen, Peter D.D. Schwindt   +6 more
doaj   +4 more sources

Discrimination of finger movements by magnetomyography with optically pumped magnetometers [PDF]

Scientific Reports, 2023
Optically pumped magnetometers (OPM) are quantum sensors that offer new possibilities to measure biomagnetic signals. Compared to the current standard surface electromyography (EMG), in magnetomyography (MMG), OPM sensors offer the advantage of ...
Antonino Greco, Sangyeob Baek, Thomas Middelmann, Carsten Mehring, Christoph Braun, Justus Marquetand, Markus Siegel   +6 more
doaj   +2 more sources

Chip-scale packaged in-line polarization-resolved detector for optically pumped magnetometers [PDF]

Microsystems & Nanoengineering
Optically pumped magnetometers (OPMs) have emerged as promising quantum sensors for neuroscience, geophysical exploration, and non-destructive testing. Their performance relies on detecting Faraday rotation of a probe beam interacting with spin-polarized
Hui Jae Cho, Yeeun Na, Sanghyun Park, Min-Hwan Lee, Hyogi Kim, Jihyeong Ju, Dooyoung Kim, Il-Suk Kang, Jong-Bum You, Gayoung Park, Gapseop Sim, Seung-In Lee, Byung Il Lee, Soo Hyun Kwon, Jong Hyun Song, Euije Jo, Tae Hyun Kim, Giung Rang, Jae-Hyuk Ahn, Hyoungho Ko, Jongwon Lee, Jong-Kwon Lee, Geol Moon, Jongcheol Park   +23 more
doaj   +2 more sources

Efficacy of Optically Pumped Magnetometers in Detecting Activity From the Cerebellar Cortex. [PDF]

Hum Brain Mapp
We studied the utility of OPMs and conventional SQUID sensors in detecting cerebellar activity. Our results indicate clear benefits for OPMs in terms of sensitivity, lead‐field correlations between the cortex and the cerebellum, and total information, with these improvements already achievable with 102 triaxial OPM sensors covering the whole head ...
Roos S, Hämäläinen M, Iivanainen J.
europepmc   +2 more sources

Optically pumped magnetometers detect altered maximal muscle activity in neuromuscular disease [PDF]

Frontiers in Neuroscience, 2022
Optically pumped magnetometers (OPM) are quantum sensors that enable the contactless, non-invasive measurement of biomagnetic muscle signals, i.e., magnetomyography (MMG).
Lorenzo Semeia, Lorenzo Semeia, Lorenzo Semeia, Thomas Middelmann, Sangyeob Baek, Sangyeob Baek, Sangyeob Baek, Davide Sometti, Davide Sometti, Davide Sometti, Hui Chen, Hui Chen, Alexander Grimm, Holger Lerche, Pascal Martin, Cornelius Kronlage, Christoph Braun, Christoph Braun, Christoph Braun, Christoph Braun, Philip Broser, Markus Siegel, Markus Siegel, Markus Siegel, Maria-Sophie Breu, Justus Marquetand, Justus Marquetand, Justus Marquetand   +27 more
doaj   +2 more sources