Towards a Portable Magnetoencephalography Based Brain Computer Interface with Optically-Pumped Magnetometers
| Autor: | Atilla Kilicarslan, Andrew Paek, Vladislav Gerginov, Jose L. Contreras-Vidal, Svenja Knappe, Branislav Korenko |
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| Rok vydání: | 2020 |
| Předmět: |
Computer science
Magnetometer Movement Electroencephalography 01 natural sciences law.invention 03 medical and health sciences 0302 clinical medicine law 0103 physical sciences medicine Humans Computer vision 010306 general physics Brain–computer interface Modality (human–computer interaction) medicine.diagnostic_test business.industry Magnetoencephalography Limb amputation Hand medicine.anatomical_structure Brain-Computer Interfaces Scalp Volume conduction Artificial intelligence business 030217 neurology & neurosurgery |
| Zdroj: | EMBC |
| Popis: | Brain Computer Interfaces (BCIs) allow individuals to control devices, machines and prostheses with their thoughts. Most feasibility studies with BCIs have utilized scalp electroencephalography (EEG), due to it being accessible, noninvasive, and portable. While BCIs have been studied with magnetoencephalography (MEG), the modality has limited applications due to the large immobile hardware. Here we propose that room-temperature, optically-pumped magnetometers (OPMs) can potentially serve a portable modality that can be used for BCIs. OPMs have the added advantage that low-frequency neuromagnetic fields are not affected by volume conduction, which is known to distort EEG signals. In this feasibility study, we tested an OPM system with a real-time BCI where able bodied participants controlled a cursor to reach two targets. This BCI system used alpha and beta-band power modulations associated with hand movements. Our preliminary results show significant alpha and beta-band desynchronization due to movement, as found in previous literature. |
| Databáze: | OpenAIRE |
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