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The Tale of Two Rooms: Comparison of QuSpin Zero-Field OPMs’ Operation in Two Magnetically Shielded Environments
Ekaterina Skidchenko;Anna Butorina;Nikita Fedosov;Oleg Shevtsov;Daria Medvedeva;Darisy Zhao;Ignat Dubynin;Maxim Fedorov;Nikolay Koshev;Alexei Ossadtchi
This article addresses several critical aspects of using optically pumped magnetometers (OPMs), focusing on both metrological issues and the enhancement of signal quality. We present a quantitative methodology for OPM measurements standardization and quality evaluation, which is crucial in biomedical applications like magnetoencephalography (MEG). Additionally, we introduce a novel, cost-effective...Show More
Optically Pumped Magnetometers in the MEG-Research at the Higher School of Economics
Nikita Fedosov;Daria Medvedeva;Oleg Shevtsov;Alexei Ossadtchi
2023 IEEE Ural-Siberian Conference on Computational Technologies in Cognitive Science, Genomics and Biomedicine (CSGB)
Year: 2023 | Conference Paper |
Magnetoencephalography (MEG) is a powerful method for imaging brain activity, with superior spatial resolution compared to electroencephalography (EEG). Superconducting quantum interference device (SQUID)-based systems are mostly used for MEG-acquisition, but they come with limitations like sensor-to-scalp distance and high ownership costs. Optically pumped magnetometers (OPM) sensors are emerging...Show More
Hardware Powered Ultra Low Latency (HarPULL) Brain-State Dependent TMS Technology
Nikita Fedosov;Julia Nekrasova;Milana Makarova;Oleg Shevtsov;Daria Medvedeva;Alexei Ossadtchi
2023 IEEE Ural-Siberian Conference on Computational Technologies in Cognitive Science, Genomics and Biomedicine (CSGB)
Year: 2023 | Conference Paper |
The paper introduces a novel hardware-software complex for the low latency real time phase-dependent transcranial magnetic stimulation (TMS) neurofeedback. The software with key elements implemented on the board of the EEG-recording device accurately tracks the sensorimotor rhythm phase with minimal time-delay and immediately sends the trigger to the TMS-device. An accurate phase estimation is ach...Show More
Motor-Imagery BCI with Low-Count of Optically Pumped Magnetometers
2021 Third International Conference Neurotechnologies and Neurointerfaces (CNN)
Year: 2021 | Conference Paper |
Brain-Computer Interface (BCI) is a system enabling direct communication between the brain and external devices. It has large potential in neurorehabilitation. New optically-pumped magnetometer (OPM)-based recording systems have large potential among noninvasive electroencephalographic and traditional magnetoencephalographic BCI-systems., that should be revealed., however. Here we demonstrated goo...Show More
Independent Component Analysis for Different Movements Detection in BCI Application Based on Sensorimotor Rhythms
Nikita Fedosov;Ivan Levadniy;Alexander Dmitriev;Alexander Nikolaev
2020 Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT)
Year: 2020 | Conference Paper |
Cited by: Papers (2)
This article discusses the use of independent component analysis (ICA) to detect different movements that are most significant for the brain-computer interface, in relation to the rehabilitation of post-stroke patients with upper limb paresis. The control signal for the brain-computer interface uses synchronization (desynchronization) of the sensorimotor rhythm (SMR) during motor imagery. ICA is u...Show More
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