Atomic and Subatomic Physics Research

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.

Adaptive multipole models of OPM data.

This paper adapts multipole models for OPM data to improve interference rejection and signal stability across different sensor designs.

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.

Modelling optically pumped magnetometerinterference as a mean (magnetic) field

The paper models magnetic interference in optically pumped magnetometers as a mean field to improve statistical power and reduce sensor variability.

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.

On-scalp MEG system utilizing an actively shielded array of optically-pumped magnetometers

This paper describes an on-scalp MEG system using optically-pumped magnetometers with external compensation coils to reduce ambient magnetic fields and improve sensor performance.

A 7-channel high-Tc SQUID-based on-scalp MEG system

This paper presents a 7-channel on-scalp MEG system using high-Tc SQUIDs, demonstrating its ability to sensitively sample neuromagnetic fields over a 10 cm2 scalp patch.

Requirements for coregistration accuracy in on-scalp MEG

This study quantifies the requirements for sensor coregistration accuracy in on-scalp MEG systems using simulations, finding that position errors have a larger impact than orientation errors.

Measuring MEG closer to the brain: Performance of on-scalp sensor arrays

This study compares the performance of on-scalp OPM arrays with a standard SQUID array in MEG, finding higher signal power and information capacity in OPMs.