186 citations · 195 across the 6 of their papers we have counts for
6 papers
A Four-channel Optically Pumped Magnetometer for a Magnetoencephalography Sensor Array
Joonas Iivanainen, Tony R. Carter, Jonathan E. Dhombridge +6
We present a novel four-channel OPM sensor for magnetoencephalography that utilizes a two-color pump/probe scheme on a single optical axis. We characterize its performance across 1…
The effect of spatial sampling on the resolution of the magnetostatic inverse problem
Jussi Nurminen, Andrey Zhdanov, Wan Jin Yeo +6
In magnetoencephalography, linear minimum norm inverse methods are commonly employed when a solution with minimal a priori assumptions is desirable. These methods typically produce…
Effects of head modeling errors on the spatial frequency representation of MEG
Wan-Jin Yeo, Eric Larson, Joonas Iivanainen +5
Optically-pumped magnetometers (OPM) -- next-generation magnetoencephalography (MEG) sensors -- may be placed directly on the head, unlike the more commonly used superconducting qu…
Calibration and localization of optically pumped magnetometers using electromagnetic coils
Joonas Iivanainen, Amir Borna, Rasmus Zetter +6
In this paper, we propose a method to estimate the position, orientation and gain of a magnetic field sensor using a set of (large) electromagnetic coils. We apply the method for c…
Non-Invasive Functional-Brain-Imaging with a Novel Magnetoencephalography System
Amir Borna, Tony R. Carter, Anthony P. Colombo +6
A non-invasive functional-brain-imaging system based on optically-pumped-magnetometers (OPM) is presented. The OPM-based magnetoencephalography (MEG) system features 20 OPM channel…
A 20-Channel Magnetoencephalography System Based on Optically Pumped Magnetometers
Amir Borna, Tony R. Carter, Anthony P. Colombo +6
We describe a multichannel magnetoencephalography (MEG) system that uses optically pumped magnetometers (OPMs) to sense the magnetic fields of the human brain. The system consists…