Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
. Magnetoencephalography (MEG) shares a comparable time resolution with electroencephalography. However, MEG excels in spatial resolution, enabling it to capture even the subtlest and weakest brain signals for brain-computer interfaces (BCIs). Leveraging MEG's capabilities, specifically with optically pumped magnetometers (OPM-MEG), proves to be a promising avenue for advancing MEG-BCIs, owing to its exceptional sensitivity and portability. This study harnesses the power of high-frequency steady-state visual evoked fields (SSVEFs) to build an MEG-BCI system that is flickering-imperceptible, user-friendly, and highly accurate.We have constructed a nine-command BCI that operates on high-frequency SSVEF (58-62 Hz with a 0.5 Hz interval) stimulation. We achieved this by placing the light source inside and outside the magnetic shielding room, ensuring compliance with non-magnetic and visual stimulus presentation requirements. Five participants took part in offline experiments, during which we collected six-channel multi-dimensional MEG signals along both the vertical (-axis) and tangential (-axis) components. Our approach leveraged the ensemble task-related component analysis algorithm for SSVEF identification and system performance evaluation.The offline average accuracy of our proposed system reached an impressive 92.98% when considering multi-dimensional conjoint analysis using data from both theandaxes. Our method achieved a theoretical average information transfer rate (ITR) of 58.36 bits minwith a data length of 0.7 s, and the highest individual ITR reached an impressive 63.75 bits min.This study marks the first exploration of high-frequency SSVEF-BCI based on OPM-MEG. These results underscore the potential and feasibility of MEG in detecting subtle brain signals, offering both theoretical insights and practical value in advancing the development and application of MEG in BCI systems.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/1741-2552/ad44d8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Acoustothermal Promotion of Bubble Nucleation on Nanostructured Cu Surfaces: A Molecular Dynamics Study.
Langmuir
September 2025
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
The high-intensity vibration is a highly promising method for accelerating bubble nucleation, given the significant acoustic-thermal effects at the nanoscale. The enhancement effect of vibration on the boiling process on a rough substrate was explored using the molecular dynamics method. The results show that under high-frequency vibration conditions, water molecules are simultaneously subjected to both thermal fluctuations and pressure waves.
View Article and Find Full Text PDF[Research on hybrid brain-computer interface based on imperceptible visual and auditory stimulation responses].
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
August 2025
Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, P. R. China.
In recent years, hybrid brain-computer interfaces (BCIs) have gained significant attention due to their demonstrated advantages in increasing the number of targets and enhancing robustness of the systems. However, Existing studies usually construct BCI systems using intense auditory stimulation and strong central visual stimulation, which lead to poor user experience and indicate a need for improving system comfort. Studies have proved that the use of peripheral visual stimulation and lower intensity of auditory stimulation can effectively boost the user's comfort.
View Article and Find Full Text PDFLeveraging low-frequency components for enhanced high-frequency steady-state visual evoked potential based brain computer interface in fast calibration scenario.
Cogn Neurodyn
December 2025
East China University of Science and Technology, Shanghai, 200237 China.
High-frequency steady-state visual evoked potential-based brain-computer interface (SSVEP-BCI) systems offer improved user comfort but suffer from reduced performance compared to their low-frequency counterparts, limiting their practical application. To address this issue, we propose a transfer learning-based method that leverages low-frequency SSVEP data to enhance high-frequency SSVEP performance. A filtering mechanism is designed to extract informative components from low-frequency signals, and the least squares algorithm is employed to generate high-quality synthetic high-frequency data.
View Article and Find Full Text PDFSimulated Dosing Regimens of Subcutaneous Infliximab in Adults and Children with Inflammatory Bowel Disease: Exploring Switch and Initiation Strategies.
Eur J Drug Metab Pharmacokinet
September 2025
Department of Clinical Pharmacy and Pharmacology, Máxima Medical Center, Veldhoven, The Netherlands.
Introduction: An increasing number of patients in clinical practice are transitioning from intravenous (IV) to subcutaneous (SC) dosing of infliximab. In this simulation study, we evaluated hypothetical dosing scenarios both for typical adults and adults with obesity and for children switching from steady-state IV to SC infliximab, as well as those initiating SC infliximab therapy.
Methods: By combining two previous published infliximab models, we were able to simulate both IV and SC dosing in adults and children.
A novel interleaved nonisolated high gain DC-DC boost converter based on voltage multiplier rectifier.
Sci Rep
July 2025
School of Electrical and Electronic Engineering, University College Dublin, Dublin, Ireland.
This article proposes an interleaved DC-DC boost architecture with a voltage multiplier rectifier circuit to achieve superior performance. The design methodology and operational characteristics of the converter are examined for two defined duty cycle intervals: Area 1 (0 < D < 1) and Area 2 (0.5 ≤ D < 1).
View Article and Find Full Text PDF