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High-density Electroencephalographic Acquisition in a Rodent Model Using Low-cost and Open-source Resources
Published on: November 26, 2016
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Open Ephys electroencephalography (Open Ephys + EEG): a modular, low-cost, open-source solution to human neural
Christopher Black1, Jakob Voigts2,3, Uday Agrawal2
1Center for Biomedical Engineering, Brown University, Providence, RI, United States of America.
Journal of Neural Engineering
|March 8, 2017
Summary
This study introduces an open-source Electroencephalography (EEG) platform, Open Ephys+EEG, offering a cost-effective solution for high-quality human neural activity recording. This system provides reliable data comparable to commercial systems, fostering research and innovation in brain-computer interfaces.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Open-Source Technology
Background:
- Electroencephalography (EEG) non-invasively records human neural activity with high temporal resolution.
- Existing commercial EEG systems are often prohibitively expensive and lack customizability for research needs.
- Open-source solutions can reduce costs and enhance collaboration in neuroscientific research.
Purpose of the Study:
- To develop and validate an open-source EEG platform, Open Ephys+EEG, for cost-effective, high-quality human neural recordings.
- To adapt the Open Ephys electrophysiology system for human EEG acquisition.
- To facilitate advanced closed-loop experiments and brain-computer interface (BCI) development.
Main Methods:
- Integration of various EEG caps with the Open Ephys acquisition board.
- Development of protocols for data acquisition and processing using open-source tools.
- Comparative analysis of Open Ephys+EEG system performance against a commercial EEG system (Brainvision ActiCHamp).
Main Results:
- The Open Ephys+EEG system successfully recorded reliable human EEG and EMG data.
- Quantitative comparison demonstrated comparable average power and signal-to-noise ratio for 8-14 Hz activity (eyes closed) to a commercial system.
- The system proved effective for research applications, including closed-loop paradigms.
Conclusions:
- Open Ephys+EEG provides a viable, affordable alternative to commercial EEG systems for acquiring high-quality human neural data.
- The open-source nature of the system promotes accessibility, extensibility, and innovation in neuroscience research.
- This platform supports the development of novel brain-computer interfaces and advanced neuroscientific investigations.
