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A major shortcoming of medical practice is the lack of an objective measure of conscious level. Impairment of consciousness is common, e.g. following brain injury and seizures, which can also interfere with sensory processing and volitional…

Neurons and Cognition · Quantitative Biology 2025-12-24 Alexis Pomares Pastor , Ines Ribeiro Violante , Gregory Scott

Objective: Sparse Bayesian learning provides an effective scheme to solve the high-dimensional problem in brain signal decoding. However, traditional assumptions regarding data distributions such as Gaussian and binomial are potentially…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Yuanhao Li , Badong Chen , Wenjun Bai , Yasuharu Koike , Okito Yamashita

Electroencephalography (EEG) source imaging aims to infer brain activity from electrical potentials measured on the scalp. This is a difficult problem because many different source patterns can explain the same measurements. The result…

Numerical Analysis · Mathematics 2026-04-29 Santtu Söderholm , Joonas Lahtinen , Sampsa Pursiainen

Multi-electrode arrays (MEA) are increasingly used to investigate spontaneous neuronal network activity. The recorded signals comprise several distinct components: Apart from artefacts without biological significance, one can distinguish…

Neurons and Cognition · Quantitative Biology 2017-04-03 Måns Henningson , Sebastian Illes

Brain Electroencephalography (EEG) classification is widely applied to analyze cerebral diseases in recent years. Unfortunately, invalid/noisy EEGs degrade the diagnosis performance and most previously developed methods ignore the necessity…

Machine Learning · Computer Science 2018-02-12 Chenglong Dai , Jia Wu , Dechang Pi , Lin Cui

Objective: Our objective is to formulate the problem of the Magnetoencephalographic (MEG) sensor array design as a well-posed engineering problem of accurately measuring the neuronal magnetic fields. This is in contrast to the traditional…

Medical Physics · Physics 2023-06-16 Andrey Zhdanov , Jussi Nurminen , Joonas Iivanainen , Samu Taulu

Electroencephalography (EEG) source imaging aims to reconstruct the spatial distribution of neural activity within the brain from non-invasive scalp measurements. This inverse problem is severely ill-posed due to the low spatial resolution…

Numerical Analysis · Mathematics 2026-04-08 Joonas Lahtinen , Alexandra Koulouri

Electroencephalography (EEG) and magnetoencephalography (MEG) measure neural activity non-invasively by capturing electromagnetic fields generated by dendritic currents. Although rooted in the same biophysics, EEG and MEG exhibit distinct…

Signal Processing · Electrical Eng. & Systems 2025-10-16 Qinfan Xiao , Ziyun Cui , Chi Zhang , Siqi Chen , Wen Wu , Andrew Thwaites , Alexandra Woolgar , Bowen Zhou , Chao Zhang

Optically-pumped magnetometers (OPM) -- next-generation magnetoencephalography (MEG) sensors -- may be placed directly on the head, unlike the more commonly used superconducting quantum interference device (SQUID) sensors, which must be…

MLE-Toolbox is a comprehensive open-source MATLAB toolbox for end-to-end analysis of magnetoencephalography (MEG) and electroencephalography (EEG) data. Inspired by widely used neuroimaging platforms such as Brainstorm and FieldTrip, it…

Neurons and Cognition · Quantitative Biology 2026-04-21 Xiaobo Liu

Motor imagery classification based on electroencephalography (EEG) signals is one of the most important brain-computer interface applications, although it needs further improvement. Several methods have attempted to obtain useful…

Computer Vision and Pattern Recognition · Computer Science 2024-03-08 Takuto Fukushima , Ryusuke Miyamoto

Background: Many magnetoencephalographs (MEG) contain, in addition to data channels, a set of reference channels positioned relatively far from the head that provide information on magnetic fields not originating from the brain. This…

Neurons and Cognition · Quantitative Biology 2020-01-13 Jeff Hanna , Cora Kim , Nadia Müller-Voggel

Electroencephalography (EEG) signals' interpretation is based on waveform analysis, where meaningful information should emerge from a plethora of data. Nonetheless, the continuous increase in computational power and the development of new…

Neurons and Cognition · Quantitative Biology 2015-05-08 Rogerio Normand , Hugo Alexandre Ferreira

Objective: Machine learning- and deep learning-based models have recently been employed in motor imagery intention classification from electroencephalogram (EEG) signals. Nevertheless, there is a limited understanding of feature selection…

Signal Processing · Electrical Eng. & Systems 2025-04-08 Muhammad Sudipto Siam Dip , Mohammod Abdul Motin , Md. Anik Hasan , Sumaiya Kabir

Kalman filtering has proven to be effective for estimating brain activity using EEG recordings. In particular, the introduced post hoc standardization step of the algorithm, inspired by the sLORETA time-invariant method, reduces the depth…

Numerical Analysis · Mathematics 2025-11-17 Veikka Piispa , Dilshanie Prasikala , Joonas Lahtinen , Alexandra Koulouri , Sampsa Pursiainen

Electroencephalography (EEG) signals are promising as alternatives to other biometrics owing to their protection against spoofing. Previous studies have focused on capturing individual variability by analyzing task/condition-specific EEG.…

Signal Processing · Electrical Eng. & Systems 2021-03-29 Mari Ganesh Kumar , Shrikanth Narayanan , Mriganka Sur , Hema A Murthy

A recently proposed IAS MEG inverse solver algorithm, based on the coupling of a hierarchical Bayesian model with computationally efficient Krylov subspace linear solver, has been shown to perform well for both superficial and deep brain…

Neurons and Cognition · Quantitative Biology 2017-07-19 Daniela Calvetti , Annalisa Pascarella , Francesca Pitolli , Erkki Somersalo , Barbara Vantaggi

Electroencephalographic (EEG) signals are fundamental to neuroscience research and clinical applications such as brain-computer interfaces and neurological disorder diagnosis. These signals are typically a combination of neurological…

Machine Learning · Computer Science 2023-10-27 Matteo Gabardi , Aurora Saibene , Francesca Gasparini , Daniele Rizzo , Fabio Antonio Stella

There have been different reports of developing Brain-Computer Interface (BCI) platforms to investigate the noninvasive electroencephalography (EEG) signals associated with plan-to-grasp tasks in humans. However, these reports were unable…

Signal Processing · Electrical Eng. & Systems 2024-02-07 Anna Cetera , Ali Rabiee , Sima Ghafoori , Reza Abiri

Surface electromyography (sEMG) is a well-established approach to monitor muscular activity on wearable and resource-constrained devices. However, when measuring deeper muscles, its low signal-to-noise ratio (SNR), high signal attenuation,…

Systems and Control · Electrical Eng. & Systems 2023-09-15 Sebastian Frey , Victor Kartsch , Christoph Leitner , Andrea Cossettini , Sergei Vostrikov , Simone Benatti , Luca Benini