# A wearable high-density MEG system with uOPMs

> **NIH NIH R44** · FIELDLINE, INC. · 2022 · $1,048,342

## Abstract

Abstract
In this Phase II project, we will build a complete high-density wearable full-head MEG system using our
micro-OPM sensors and to cross-validate our system against current SQUID-based MEG systems. A
complete system consists of (1) the sensor system - an array of 128 sensors and their control electronics
that performs synchronous data collection and control; (2) a MEG cap that conforms to the shape of the
head and holds the sensor array; (3) an integrated sensor scanning system to localize the position and
orientation of each sensor relative to the head; (4) an integrated active coil system to compensate for the
background field gradients using feedback from the sensor array during recording; and (5) a user
interface software seamlessly controls and collects signals and metadata from all the sub-systems. The
system will be delivered to our collaborators at the Children’s Hospital of Philadelphia (CHOP) for cross-
validation against the current SQUID MEG system in adults and children. We will also evaluate its
performance in paradigms that are impossible with current technology, which could open services to
patient groups currently denied, and broaden the range of applications for such systems.

## Key facts

- **NIH application ID:** 10442540
- **Project number:** 5R44MH118154-03
- **Recipient organization:** FIELDLINE, INC.
- **Principal Investigator:** Orang Alem
- **Activity code:** R44 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2022
- **Award amount:** $1,048,342
- **Award type:** 5
- **Project period:** 2019-06-07 → 2024-06-30

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10442540

## Citation

> US National Institutes of Health, RePORTER application 10442540, A wearable high-density MEG system with uOPMs (5R44MH118154-03). Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/grant/nih/10442540. Licensed CC0.

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