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Invasive cortical brain-machine interfaces (BMIs) can significantly improve the life quality of motor-impaired patients. Nonetheless, externally mounted pedestals pose an infection risk, which calls for fully implanted systems. Such…

Neurons and Cognition · Quantitative Biology 2024-09-04 Tengjun Liu , Julia Gygax , Julian Rossbroich , Yansong Chua , Shaomin Zhang , Friedemann Zenke

Access to and availability of MRI scanners is typically limited by their cost, siting and infrastructure requirements. This precludes MRI diagnostics, the reference standard for neurological assessment, in patients who cannot be transported…

Long pulse durations necessary in selective inversion recovery (SIR) experiments along with radiation damping (RD) introduce difficulties in quantitative nuclear magnetic resonance measurements, such as those that allow for the…

Medical Physics · Physics 2014-12-01 John S. Ginn , Heather M. Whitney

Deep Brain Stimulation (DBS) is one of the most successful methods to diminish late-stage Parkinson's Disease (PD) symptoms. It is a delicate surgical procedure which requires detailed pre-surgical patient's study. High-field Magnetic…

Image and Video Processing · Electrical Eng. & Systems 2024-07-23 Tomás Lima , Igor Varga , Eduard Bakštein , Daniel Novák , Victor Alves

To date, it is still impossible to sample the entire mammalian brain with single-neuron precision. This forces one to either use spikes (focusing on few neurons) or to use coarse-sampled activity (averaging over many neurons, e.g. LFP).…

Neurons and Cognition · Quantitative Biology 2022-12-12 Joao Pinheiro Neto , Franz Paul Spitzner , Viola Priesemann

The assessment of Parkinson's disease (PD) poses a significant challenge as it is influenced by various factors which lead to a complex and fluctuating symptom manifestation. Thus, a frequent and objective PD assessment is highly valuable…

Purpose: To develop neural network (NN)-based quantitative MRI parameter estimators with minimal bias and a variance close to the Cram\'er-Rao bound. Theory and Methods: We generalize the mean squared error loss to control the bias and…

Medical Physics · Physics 2024-05-07 Andrew Mao , Sebastian Flassbeck , Jakob Assländer

Neuropsychiatric symptoms (NPS) such as depression and apathy are common in Alzheimer's disease (AD) and often precede cognitive decline. NPS assessments hold promise as early detection markers due to their correlation with disease…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Synne Hjertager Osenbroch , Lisa Ramona Rosvold , Yao Lu , Alvaro Fernandez-Quilez

We propose Microscopic Propagator Imaging (MPI) as a novel method to retrieve the indices of the microscopic propagator which is the probability density function of water displacements due to diffusion within the nervous tissue…

Neurons and Cognition · Quantitative Biology 2025-03-03 Tommaso Zajac , Gloria Menegaz , Marco Pizzolato

Accurate automatic segmentation of brain anatomy from $T_1$-weighted~($T_1$-w) magnetic resonance images~(MRI) has been a computationally intensive bottleneck in neuroimaging pipelines, with state-of-the-art results obtained by unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Amod Jog , Bruce Fischl

Our brain is a complex information processing network in which the nervous system receives information from the environment to quickly react to incoming events or learns from experience to sharp our memory. In the nervous system, the brain…

Neurons and Cognition · Quantitative Biology 2022-06-20 Thi Kim Thoa Thieu , Roderick Melnik

Recent analyses combining advanced theoretical techniques and high-quality data from thousands of simultaneously recorded neurons provide strong support for the hypothesis that neural dynamics operate near the edge of instability across…

Neurons and Cognition · Quantitative Biology 2024-03-25 Rubén Calvo , Carles Martorell , Guillermo B. Morales , Serena Di Santo , Miguel A. Muñoz

Implantable Brain-machine interfaces (BMIs) are promising for motor rehabilitation and mobility augmentation, and they demand accurate and energy-efficient algorithms. In this paper, we propose a novel spiking neural network (SNN) decoder…

Signal Processing · Electrical Eng. & Systems 2024-05-06 Jiawei Liao , Oscar Toomey , Xiaying Wang , Lars Widmer , Cynthia A. Chestek , Luca Benini , Taekwang Jang

Positive-feedback (PF) device and its operation scheme to implement pulse width modulation (PWM) function was proposed and demonstrated, and the device operation mechanism for implementing PWM function was analyzed. By adjusting the amount…

Emerging Technologies · Computer Science 2021-08-24 Sung Yun Woo , Dongseok Kwon , Byung-Gook Park , Jong-Ho Lee , Jong-Ho Bae

A sensor-fused wearable assistance prototype for upper-limb function (triceps brachii and extensor pollicis brevis) is presented. The device integrates surface electromyography (sEMG), an inertial measurement unit (IMU), and flex/force…

Neurons and Cognition · Quantitative Biology 2025-10-24 Aueaphum Aueawattthanaphisut , Thanyanee Srichaisak , Arissa Ieochai

Magnetic nanoparticles (MNPs) play an important role in biomedical applications including imaging modalities such as MRI and magnetic particle imaging (MPI). The latter one exploits the non-linear magnetization response of a large ensemble…

Mesoscale and Nanoscale Physics · Physics 2021-10-27 Hannes Albers , Tobias Knopp , Martin Möddel , Marija Boberg , Tobias Kluth

Personalized treatments are gaining momentum across all fields of medicine. Precision medicine can be applied to neuromodulatory techniques, where focused brain stimulation treatments such as repetitive transcranial magnetic stimulation…

This article provides an introduction to nuclear magnetic resonance spectroscopy in pulsed magnetic fields (PFNMR), focusing on its capabilities, applications, and future developments in research involving high magnetic fields. It…

Strongly Correlated Electrons · Physics 2025-03-07 H. Kühne , Y. Ihara

Deep Brain Stimulation (DBS) stands as an effective intervention for alleviating the motor symptoms of Parkinson's disease (PD). Traditional commercial DBS devices are only able to deliver fixed-frequency periodic pulses to the basal…

Machine Learning · Computer Science 2024-03-12 Hao-Lun Hsu , Qitong Gao , Miroslav Pajic

Vagus nerve stimulation (VNS) has emerged as a promising therapeutic intervention across various neurological and psychiatric conditions, including epilepsy, depression, and stroke rehabilitation; however, its mechanisms of action on neural…

Neurons and Cognition · Quantitative Biology 2025-02-03 Shinichi Kumagai , Tomoyo Isoguchi Shiramatsu , Kensuke Kawai , Hirokazu Takahashi