Results 111 to 120 of about 3,346 (191)

Measuring Human Auditory Evoked Fields with a Flexible Multi-Channel OPM-Based MEG System

Journal of Integrative Neuroscience
Background: Magnetoencephalography (MEG) is a non-invasive imaging technique for directly measuring the external magnetic field generated from synchronously activated pyramidal neurons in the brain.
Xin Zhang, Yan Chang, Hui Wang, Yin Zhang, Tao Hu, Xiao-yu Feng, Ming-kang Zhang, Ze-kun Yao, Chun-qiao Chen, Jia-yu Xu, Fang-yue Fu, Qing-qian Guo, Jian-bing Zhu, Hai-qun Xie, Xiao-dong Yang   +14 more
doaj   +1 more source

Facial magnetomyography using an array of optically pumped magnetometer

Laryngo-Rhino-Otologie
Measuring facial muscle activity is crucial in the diagnosis of facial palsy. This study investigated whether contactless Magnetomyography (MMG) using optically pumped magnetometers (OPM) is feasible for visualizing facial muscle activity.An anatomically shaped mask featuring eleven OPM was arranged on one side of the face of five healthy subjects. MMG
von Fraunberg, Johannes, Lu, Hongyu, Yang, Haodi, Marquetand, Nura, Braun, Christoph, Rüttiger, Lukas, Wolpert, Stephan, Knipper, Marlies, Siegel, Markus, Löwenheim, Hubert, Marquetand, Justus   +10 more
openaire   +2 more sources

Attitude-Independent Route Tracking for Subsea Power Cables Using a Scalar Magnetometer under High Sea Conditions

Remote Sensing
To overcome the shortcoming wherein the accuracy of subsea cable detection can be affected by the determination of the bias vector, scale factors, and non-orthogonality corrections of the vector magnetometer, a real-time attitude-independent route ...
Guozhu Li, Xuxing Geng, Shangqing Liang, Yuanpeng Chen, Guangming Huang, Gaoxiang Li, Xueting Zhang, Guoqing Yang   +7 more
doaj   +1 more source

Femtotesla atomic magnetometry in a microfabricated vapor cell [PDF]

, 2010
Allred, Budker, Dang, Drung, Dupont-Roc, Griffith, Happer, John Kitching, Knappe, Knappe, Knappe, Kominis, Kornack, Ledbetter, Ledbetter, Lee, Robbes, Shah, Sternickel, Svenja Knappe, W. Clark Griffith, Wallis   +21 more
core   +1 more source

Stroboscopic microwave spectroscopy of Voigt-based optically pumped magnetometers

Physical Review A
We present results of stroboscopic microwave spectroscopy of radio-frequency dressed optically pumped magnetometer. Interaction between radio-frequency dressed atoms and a synchronously pulsed microwave field followed by Voigt effect-based optical probing allows us to perform partial state tomography and assess the efficiency of the state preparation ...
Hans Marin Florez, Tadas Pyragius, Thomas Fernholz   +2 more
openaire   +2 more sources

An Improved Neutron Electric Dipole Moment Experiment

, 2008
A new measurement of the neutron EDM, using Ramsey's method of separated oscillatory fields, is in preparation at the new high intensity source of ultra-cold neutrons (UCN) at the Paul Scherrer Institute, Villigen, Switzerland (PSI).
Altarev, I., Ban, G., Bison, G., Bodek, K., Burghoff, M., Daum, M., Eberhardt, K., Fierlinger, P., Gutsmiedl, E., Hampel, G., Heil, W., Henneck, R., Khomutov, N., Kirch, K., Kistryn, St., Knappe-Grueneberg, S., Knecht, A., Knowles, P., Kratz, J. V., Kuźniak, M., Lauer, T., Lauss, B., Lefort, T., Mtchedlishvili, A., Naviliat-Cuncic, O., Paul, S., Pazgalev, A. S., Petzold, G., Plonka-Spehr, C., Quéméner, G., Rebreyend, D., Roccia, S., Rogel, G., Sander-Thoemmes, T., Schnabel, A., Severijns, N., Sobolev, Yu., Stoepler, R., Trahms, L., Tur, M., Weis, A., Wiehl, N., Zejma, J., Zsigmond, G.   +43 more
core   +1 more source

Concurrent spinal and brain imaging with optically pumped magnetometers

Journal of Neuroscience Methods
The spinal cord and its interactions with the brain are fundamental for movement control and somatosensation. However, brain and spinal electrophysiology in humans have largely been treated as distinct enterprises, in part due to the relative inaccessibility of the spinal cord.
Mardell, Lydia C, Spedden, Meaghan E, O'Neill, George C, Tierney, Tim M, Timms, Ryan C, Zich, Catharina, Barnes, Gareth R, Bestmann, Sven   +7 more
openaire   +3 more sources

The effect of sensor-to-source distance on magnetic neuromuscular signals

Scientific Reports
Magnetomyography (MMG) can be used as a contactless modality to study the neuromuscular system. On the one hand, being contactless is a practical advantage as there is no need to prepare skin or attach electrodes as in electromyography (EMG).
Haodi Yang, Thomas Klotz, Leonardo Gizzi, Hongyu Lu, Gianpiero Monittola, Urs Schneider, Markus Siegel, Justus Marquetand   +7 more
doaj   +1 more source

Magnetic particle imaging using a multi-axis optically pumped magnetometer and multiple flux transformers

Sensing and Bio-Sensing Research
Biofunctionalized magnetic nanoparticles (MNPs) have been widely studied for biomedical applications, including magnetic particle imaging (MPI), which is a promising diagnostic technique for cancer imaging.
Teruyoshi Sasayama, Shuji Taue, Takashi Yoshida   +2 more
doaj   +1 more source

Fetal magnetoencephalography based on optically pumped magnetometers

AbstractThe fetus in the third trimester of gestation has already the remarkable capacity to process external sensory information in utero. So far, investigations of fetal brain responses to sensory information have mostly relied on cryogenic magnetoencephalography (MEG), which is suitable to record fetal brain activity and is not much affected by ...
Pierre Corvilain, Chiara Capparini, Vincent Wens, Lauréline Fourdin, Maxime Ferez, Odile Feys, Anne Delbaere, Rosine Lejeune, Deborah Goldman, Caroline De Coninck, Xavier De Tiège, Julie Bertels   +11 more
openaire   +1 more source