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Related Experiment Video

Updated: Jun 6, 2026

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording

Published on: September 1, 2022

Opto-Myomatrix: μLED Integrated Microelectrode Arrays for Optogenetic Activation and Electrical Recording in Muscle

Jiaao Lu, Muneeb Zia, Danish A Baig

IEEE Transactions on Bio-Medical Engineering

|June 4, 2026

Summary

This summary is machine-generated.

Opto-Myomatrix is a new optogenetic tool that precisely controls muscle fibers and records electromyography (EMG) signals. This flexible device enhances neuromuscular studies by combining optical stimulation with high-quality EMG acquisition.

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Engineering and Characterization of an Optogenetic Model of the Human Neuromuscular Junction

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Published on: April 14, 2022

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Last Updated: Jun 6, 2026

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Published on: September 1, 2022

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Engineering and Characterization of an Optogenetic Model of the Human Neuromuscular Junction

Engineering and Characterization of an Optogenetic Model of the Human Neuromuscular Junction

Published on: April 14, 2022

Area of Science:

Biomedical Engineering
Neuroscience
Optogenetics

Background:

Optogenetics enables precise cell control with high temporal and spatial resolution.
Existing optogenetic tools are primarily used for brain and CNS research.
There is a need for specialized tools for neuromuscular studies.

Purpose of the Study:

To develop Opto-Myomatrix, a novel optogenetic tool.
To enable localized muscle fiber control.
To achieve high-resolution electrophysiological recording in muscles.

Main Methods:

Fabrication of a flexible, biocompatible polymer substrate device.
Integration of a 465 nm μLED for optogenetic stimulation.
Incorporation of 32 PEDOT:PSS-coated electrodes for EMG recording.
Addition of a reflector to enhance optical power output.

Main Results:

Achieved optical output intensity of 129.46 mW/mm².
PEDOT:PSS-coated electrodes showed 85% lower impedance for high signal-to-noise EMG.
Confirmed safe temperature limits for the μLED.
Successfully stimulated jaw muscles and recorded EMG signals in transgenic mice.

Conclusions:

Opto-Myomatrix effectively combines localized optical stimulation and high-quality EMG recording.
The device is flexible, biocompatible, and suitable for optogenetic muscle applications.
This tool addresses a gap in neuromuscular research, advancing the field.