Atomic and Subatomic Physics Research

Low-Cost Real-Time Fiber-Optic Distance Sensing for OPM-based Biomagnetic Measurements

This paper evaluates low-cost polymer fiber sensors for real-time distance measurement in OPM-based biomagnetic measurements, finding high accuracy over 0-10 mm with some error beyond.

Comparing advanced interference suppression algorithms for OPM-MEG

This study compares five interference suppression algorithms for OPM-MEG systems, finding that some perform better with single-axis data and dental artifacts.

Motion tolerance in wearable OPM-MEG using dynamic field nulling

This paper develops a dynamic field nulling method for wearable OPM-MEG to improve motion tolerance and source localization accuracy during head movements.

Modular Arrays for High Precision Wearable MEG

This paper introduces a modular, cap-based design for wearable OPM-based MEG that improves accessibility and participant throughput while maintaining high signal quality and mobility.

Signal-to-noise ratio of event-related fields in on-scalp and off-scalp MEG

The paper compares signal-to-noise ratio (SNR) of MEG signals from on-scalp and off-scalp sensors, finding that OPMs offer better SNR for superficial sources and smaller heads.

MRI-free OPM-MEG recovers medial temporal lobe theta during scene imagination

This study shows that OPM-MEG can detect theta oscillation attenuation in the medial temporal lobe during scene imagination without requiring individual MRI scans.

Magnetoencephalography Without a Shielded Room

This paper presents a lightweight, low-cost MEG system that enables brain imaging without a magnetically shielded room, achieving comparable signal-to-noise ratios to conventional systems.

Wearable magnetoencephalography in an open environment

This paper introduces a wearable OPM-MEG system that enables brain activity localization in an open environment without magnetic shielding.

Measurement Equivalence of On-Scalp OPM-MEG and Cryogenic MEG for Auditory and Somatosensory Cortical Mapping Across Development

In 18 participants aged 10-45, OPM-MEG and SQUID-MEG placed auditory and somatosensory dipoles in the same cortical areas with matched latencies, differing by small systematic offsets and amplitude scaling.

OPM-FLUX: A Pipeline for OPM MEG Data Analysis

OPM-FLUX provides a standardized analysis pipeline for OPM-MEG data, improving reproducibility and comparability across platforms and promoting consistent methodological practices.

Unleashing the potential of OPM-MEG to study event-related fields against low-frequency artifacts: the case of sentence processing

The paper demonstrates that combining moderate high-pass filtering and evoked-biased denoising source separation can effectively reveal N400 deflections in sentence processing studies using a nine-sensor OPM-MEG setup.

An integrated virtual reality platform for naturalistic neuroimaging with magnetoencephalography

This paper presents a VR system integrated with wearable MEG to enable whole-brain recordings during naturalistic behaviors.

Signal space beamforming for gain- and geometry-independent interference suppression in wearable MEG

This paper introduces signal space beamforming (SSB) to suppress interference in wearable MEG data without requiring precise sensor gain or geometry calibration, validated on epileptic and neurodevelopmental datasets.

Reliability and signal comparison of OPM-MEG, fMRI & iEEG in a repeated movie viewing paradigm

This study compares the reliability and signal characteristics of OPM-MEG, fMRI, and iEEG during repeated movie viewings, showing OPM's reliability and cross-modal consistency.

Portable quantum-sensor magnetomyography decodes fine hand movements

This paper demonstrates that a portable OPM-MMG system can decode fine finger movements and recover EMG-like patterns without skin contact or a magnetically shielded room.

High frequency oscillations measured with optically pumped magnetometers from the human retina

This study measures high-frequency oscillations in the human retina using optically pumped magnetometers and finds they can be detected up to 140 Hz.

Decoding with multivariate pattern analysis is superior for optically pumped magnetometer-based magnetoencephalography compared to superconducting quantum interference device-based systems

This study compares decoding accuracy of visual processing using optically pumped magnetometer (OPM) and superconducting quantum interference device (SQUID) based magnetoencephalography (MEG) systems with multivariate pattern analysis (MVPA).

The Mismatch Negativity compared: EEG, SQUID-MEG and novel 4Helium-OPMs

The paper compares EEG, SQUID-MEG, and 4Helium-OPMs in measuring auditory mismatch negativity using a passive oddball paradigm, finding comparable performance across all modalities.

Volume conductor models for magnetospinography

This study compares volume conductor models to determine their impact on magnetic field predictions from spinal cord current flow.

Beta burst waveform extraction using novel 4He-OPMs

The paper develops a beta burst extraction pipeline using Helium-OPMs to study motor preparation and execution, finding similar waveform patterns to SQUID-MEG with task-related modulations.

Validation of a combined cylindrical shield and partial-coverage mobile OPM system for detecting neuromagnetic sensorimotor responses in humans

The paper validates a mobile OPM system for detecting neuromagnetic sensorimotor responses in humans, showing robust results for passive paradigms but less conclusive findings for cued movement tasks.

OPM quantum sensors enhance non-invasive neuroimaging performance

This paper demonstrates that OPM quantum sensors improve non-invasive neuroimaging by enhancing signal-to-noise ratio and signal coherence compared to EEG and conventional MEG.

Biplanar nulling coil system for OPM-MEG using printed circuit boards

This paper designs and fabricates biplanar nulling coils for OPM-MEG using PCBs, achieving field reduction comparable to traditional methods in a less shielded environment.

Wearable MEG data recorded during human stepping

The paper presents a multimodal dataset of wearable MEG and EMG recordings during human stepping, validated with beta band desynchronization in the primary motor cortex.

Fetal magnetoencephalography based on optically pumped magnetometers

This paper demonstrates the use of optically pumped magnetometers (OPM-MEG) to non-invasively record fetal and newborn brain responses to auditory stimuli, showing significant evoked responses and reduced latency in infants.

Source Reconstruction Without an MRI using Optically Pumped Magnetometer based Magnetoencephalography

This paper demonstrates that source-localized OPM-MEG data can be modeled with or without individual MRI scans, showing high similarity in key metrics.

Pushing the boundaries of MEG based on optically pumped magnetometers towards early human life

This study uses OPM-MEG to record brain responses in newborns, showing significant evoked responses to auditory stimuli and validating results with adult MEG.

Inferring laminar origins of MEG signals with optically pumped magnetometers (OPMs): a simulation study

This study simulates how optically pumped magnetometers (OPMs) can infer laminar origins of neural activity with varying sensor configurations and SNR, finding that higher sampling density and measurement axes improve inference.

Optimizing magnetometers arrays and analysis pipelines for multivariate pattern analysis

This paper optimizes magnetometer arrays and analysis pipelines for multivariate pattern analysis, finding that 30 sensors are sufficient and advising against signal space separation filters.

Non-invasive evidence for rhythmic interactions between the human brain, spinal cord, and muscle

The paper demonstrates non-invasive imaging of brain, spinal cord, and muscle interactions during movement using optically-pumped magnetometers.