Atomic and Subatomic Physics Research

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.

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.

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.

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.

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.

Concurrent spinal and brain imaging with optically pumped magnetometers

This paper introduces a system for concurrent non-invasive imaging of brain and spinal cord electrophysiology using wearable optically pumped magnetometers.

A Novel, Robust, and Portable Platform for Magnetoencephalography using Optically Pumped Magnetometers

This paper introduces a new OPM-MEG system with improved portability and dynamic range, showing comparable performance to existing systems in measuring brain activity.

Discrimination of finger movements by magnetomyography with optically pumped magnetometers

This study compares optically pumped magnetometers (OPM) and EMG for finger movement discrimination, finding both achieve over 89% accuracy with high agreement.

Naturalistic hyperscanning with wearable magnetoencephalography

This paper introduces wearable magnetoencephalography for hyperscanning, enabling naturalistic social interaction studies with high-fidelity data.

Detection of the 40-Hz Auditory Steady-state Response with Optically Pumped Magnetometers

This study detects the 40-Hz auditory steady-state response using optically pumped magnetometers (OPMs) and shows their performance is comparable to conventional SQUID-MEG sensors.

Spherical harmonic based noise rejection and neuronal sampling with multi-axis OPMs

This paper evaluates noise rejection and spatial sampling in multi-axis OPMs using spherical harmonics and eigenspectra, finding triaxial configurations offer superior performance.

Peripheral Nerve Magnetoneurography with Optically Pumped Magnetometers

This study demonstrates that optically pumped magnetometers with expanded bandwidth can detect magnetic signatures of sensory nerve action potentials and Hoffmann reflexes, suggesting their potential as an electrodiagnostic tool for peripheral nerve diseases.

Using OPM-MEG in contrasting magnetic environments

This study compares OPM-MEG systems in contrasting magnetic environments, showing comparable noise floors and brain activity detection despite significant differences in background field and interference.

Improved spatio-temporal measurements of visually evoked fields using optically-pumped magnetometers

This study demonstrates improved spatio-temporal resolution in measuring visually evoked brain fields using optically pumped magnetometers compared to SQUIDs.

Using OPMs to measure neural activity in standing, mobile participants

This study demonstrates that OP-MEG can measure neural activity during significant head movements, including standing and large natural movements, with consistent auditory evoked fields.

Contactless recordings of retinal activity using optically pumped magnetometers

This study uses optically pumped magnetometers to record human retinal activity and compares it to electroretinograms, finding significant shared information and potential for contactless retinal activity recording.

Magnetic Field Mapping and Correction for Moving OP-MEG

This paper models and corrects magnetic field variations in moving OP-MEG data to reduce movement artefacts.

Measuring functional connectivity with wearable MEG

This study demonstrates that a wearable OPM-MEG system can accurately characterize brain networks, showing high similarity to data from a cryogenic MEG system.

Pragmatic spatial sampling for wearable MEG arrays

This paper investigates the optimal number and placement of sensors in wearable MEG systems, showing that few sensors at coarse sampling can achieve adequate spatial discrimination under high SNR.

Optically pumped magnetometers disclose magnetic field components of the muscular action potential.

This study uses optically pumped magnetometers to measure magnetic fields from muscle action potentials, revealing new insights into their propagation and physiological mechanisms.

Mouth magnetoencephalography: A unique perspective on the human hippocampus

This paper investigates the use of mouth-based sensors in magnetoencephalography (MEG) to study the human hippocampus, finding that mouth sensors show unique task-related activity and anti-correlation with temporal lobe sensors.

Multi-Channel Whole-Head OPM-MEG: Helmet Design and a Comparison with a Conventional System

The paper constructs and evaluates a 49-channel whole-head OPM-MEG system, showing comparable performance to cryogenic MEG with a rigid helmet design.

Potential of on-scalp MEG: Robust detection of human visual gamma-band responses

This study demonstrates that on-scalp MEG using optically-pumped magnetometers can robustly detect human visual gamma-band responses with improved spatial resolution compared to conventional SQUID-based MEG.

Using optically-pumped magnetometers to measure magnetoencephalographic signals in the human cerebellum

This paper demonstrates that optically-pumped magnetometers improve cerebellar MEG signal detection by reducing sensor distance and increasing SNR, revealing evoked and induced responses to sensory stimuli.

Optical Co-registration of MRI and On-scalp MEG

This paper develops and validates a co-registration method for on-scalp MEG systems, improving accuracy and ease of use compared to traditional methods.