Results 91 to 100 of about 3,295 (205)
Current Directions in Biomedical Engineering, 2021 Some optically pumped magnetometer (OPM) sensors available for biomagnetic investigations have a linear range limited to +- 1 nT due to the specific properties of their open loop operation.
Sander Tilmann H. +2 more
doaj +1 more source
Experimental study of 199Hg spin anti-relaxation coatings
, 2013 We report on a comparison of spin relaxation rates in a $^{199}$Hg magnetometer using different wall coatings. A compact mercury magnetometer was built for this purpose.
Chowdhuri, Z. +10 more
core +3 more sources
Disentangling Coincident Cell Events Using Deep Transfer Learning and Compressive Sensing
Advanced Intelligent Systems, EarlyView.Overlapping cells during detection distort single‐cell measurements and reduce diagnostic accuracy. A hybrid framework combining a fully convolutional neural network with compressive sensing to disentangle overlapping signals directly from raw time‐series data is presented.
Moritz Leuthner +2 more
wiley +1 more source
Annals of Neurology, EarlyView.Objective Sleep‐predominant network hyperexcitability is increasingly recognized as a potential disease‐accelerating comorbidity in Alzheimer's disease (AD). However, its prevalence and risk‐factors remain debated, largely due to cohort‐specific and methodological differences across studies.
Anna B. Szabo +14 more
wiley +1 more source
Archaeological Prospection, EarlyView.ABSTRACT This paper tackles one key limitation in the analysis of Iron Age communities in the Northwestern Iberian Peninsula: the limited exploration of areas beyond the fortified settlements known as castros (hillforts). The vast majority of archaeological studies have focused exclusively on the areas inside the walls of these settlements, which are ...
César Parcero‐Oubiña +7 more
wiley +1 more source
Persistent Optically Induced Magnetism in Oxygen-Deficient Strontium Titanate
, 2014 Strontium titanate (SrTiO$_3$) is a foundational material in the emerging field of complex oxide electronics. While its electronic and optical properties have been studied for decades, SrTiO$_3$ has recently become a renewed materials research focus ...
C. Leighton +6 more
core +1 more source
Microfabricated Optically-Pumped Magnetometers for Biomagnetic Applications
Journal of Physics: Conference Series, 2016 We report on the progress in developing microfabricated optically-pumped magnetometer arrays for imaging applications. We have improved our sensitivities by several orders of magnitude in the last ten years. Now, our zero-field magnetometers reach noise values below 15 fT/Hz1/2.
Svenja Knappe +3 more
openaire +1 more source
Epilepsia, EarlyView.Abstract High‐frequency oscillations (HFOs) were discovered more than 20 years ago, and since then they have been studied intensively in the context of epilepsy. HFOs encompass a broad spectrum of oscillations, typically ranging from 80 Hz to several kHz, that include both normal and pathological oscillations, documented in people with epilepsy and ...
Christos Panagiotis Lisgaras +6 more
wiley +1 more source
Towards Multi-Class Optically Pumped Magnetometer-Based Brain-Computer Interfaces
Current Directions in Biomedical EngineeringMagnetoencephalography (MEG) using optically pumped magnetometers (OPMs) offers several advantages over electroencephalography (EEG) and superconducting quantum interference device (SQUID)-based MEG, including improved spatial resolution and versatility.
Zerfowski Jan +5 more
doaj +1 more source
Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems
Laser &Photonics Reviews, EarlyView.This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev +4 more
wiley +1 more source