Wearable fNIRS EEG combinations

We offer a fully integrated fNIRS EEG package.

  • Combine the Brite, Brite Lite, or PortaLite with a wearable EEG system from Neuroelectrics, the TMSi APEX, or the TMSi SAGA EEG system

  • Simultaneously measure electrical potentials in brain tissue and changes in brain tissue oxygenation and blood volume

  • Up to 54 fNIRS channels and 64 EEG channels

  • Combined NIRS/EEG headcap and separate optode/electrode holders.

  • No interference with the EEG signal

  • Measure from any cortical brain areas

  • Combined 8-channel NIRS system integrated with 8+ channel EEG systems available through g.tec

portable fNIRS EEG package

Stationary fNIRS EEG combinations

We offer a fully integrated fNIRS EEG package.

  • Combine the OxyMon with the TMSi SAGA EEG system

  • Simultaneously measure electrical potentials in brain tissue and changes in brain tissue oxygenation and blood volume

  • Up to 112 fNIRS channels and 128 EEG channels for full head coverage.

  • Combined NIRS/EEG headcap and optode/electrode holders.

  • Measure NIRS and EEG at the same location

  • No interference with the EEG signal

  • Superior NIRS and EEG data quality

NIRS EEG combination package

fNIRS EEG features

The combination of EEG and NIRS offers complementary information about brain function, giving you the ability to measure both neural and hemodynamic activity simultaneously.

intergrated fnirs eeg holder

With our new NIRS-EEG packages, we went one step further than other companies in this market: we truly integrated the optode holders and EEG holders into one holder as well as the software. In this way, we can provide full head coverage, and all data is integrated and synchronized within our proprietary recording software, OxySoft. This enables you to conveniently measure EEG and NIRS with automatic event synchronization.

Mobility

Our wearable NIRS-EEG packages provide the perfect solution for any lab experiment where subject mobility is needed. They also let you measure real-world behavior like walking, biking, driving a car, and more.

Our packages are also ideal for on-site measurements outside of the lab environment since the equipment fits in a small backpack and can easily be brought to a school, a workplace, the home of an immobile individual, or any other place you can think of.

Software  

OxySoft, our proprietary recording software has native support for the TMSi SAGA device and can record EEG data from the Neuroelectrics devices received via the Lab Streaming Layer. In this way, all data is conveniently integrated and synchronized within OxySoft with automatic event synchronization.

OxySoft is able to analyze your data or export it to a wide variety of toolboxes (e.g. HOMER2/3, NIRS-SPM, Fieldtrip, EEGLAB, Brainstorm/NIRSTORM).

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All Specifications

Why combine fNIRS and EEG?

The combination of EEG and NIRS gives you the ability to measure both neural and hemodynamic activity simultaneously, providing complementary information about brain function.

EEG measures the electromagnetic field created when neurons in the brain fire. With fNIRS, you measure the hemodynamic response, which is the adjustment of oxygen in the blood when a brain region is active. By combining EEG and fNIRS, you are provided with a complete picture of brain activity: activation of neurons and energy demand of neurons. Moreover, EEG and NIRS have complementary spatial and temporal resolution. While EEG is a spatially imprecise recording technique due to volume conduction, meaning that even activation several centimeters away is recorded by electrodes, NIRS measures very precisely right under the location of the sensors. 

Despite the spatial imprecision, EEG is a very useful technique as it records at a very high sample rate of up to several Kilohertz and can detect rapidly changing brain processes. The hemodynamic response is a slower response, taking a few seconds to initiate and then smearing out over several seconds. Combining EEG and NIRS, therefore, makes it possible to monitor the brain at multiple timescales, various spatial resolutions, and through distinct underlying physiological processes.

fNIRS — EEG introduction & case studies
Multimodal fNIRS-EEG measurements — Analysis approaches
Multimodal fNIRS-EEG measurements — Analysis approaches

When it comes to deciding on an appropriate data analysis approach in multimodal fNIRS-EEG measurements, the soundest consideration factors ultimately depend on the research question at hand. Therefore, the analysis steps may vary from one study to another. Nonetheless, they can broadly be classified into two strategies: parallel data analysis and informed data analysis.

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Multimodal fNIRS-EEG measurements — Experimental Design
Multimodal fNIRS-EEG measurements — Experimental Design

Finding a suitable experimental design when performing multimodal fNIRS-EEG measurements is an important step in every study. Read this blogpost to learn more about commonly used experimental designs and how those can be adopted in multimodal research.

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Multimodal fNIRS-EEG measurements — Integration on the head
Multimodal fNIRS-EEG measurements — Integration on the head

When simultaneously measuring fNIRS and EEG, placement of both devices should ideally ensure proper coverage of the desired measurement location, minimize interference and take into account (technical) characteristics and basic of both techniques. Read this blog post to learn more about relevance of these points and further recommendations for integrating fNIRS and EEG on one head.  

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Multimodal fNIRS-EEG measurements — Staying in sync
Multimodal fNIRS-EEG measurements — Staying in sync

In this second blog post, we discuss synchronization in multimodality. When using fNIRS and EEG simultaneously, synchronization of both data streams is crucial to achieve temporal correspondence between both signals. Read this post to learn more about how to get to the ideal synchronization solution for you, which can depend on different factors, such as device specifications, software capabilities and experimental setup.

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Introduction to multimodal fNIRS — EEG measurements
Introduction to multimodal fNIRS — EEG measurements

In this blog post, we give an introduction to multimodality and explain the hallmarks, advantages, and challenges of combining fNIRS and EEG to measure brain activity. This is the first part of a blog post series on multimodality fNIRS-EEG measurements.

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The Starstim fNIRS - Combining tES brain stimulation and EEG + fNIRS neuroimaging in one headcap
The Starstim fNIRS - Combining tES brain stimulation and EEG + fNIRS neuroimaging in one headcap

Starstim fNIRS is the most adaptable solution to combine tES brain stimulation with EEG and fNIRS neuroimaging in one single wireless and wearable system – and what makes it the most versatile solution for researchers and clinicians in many application areas. The possibility to combine tES with multiple neuroimaging modalities in one device facilitates altering human behavior and acquiring a more complete picture of the brain. It further increases application possibilities and reduces set-up and measurement time.

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Heart rate extraction from NIRS signal
Heart rate extraction from NIRS signal

A commonly asked question is “What are the advantages of NIRS over EEG?”. NIRS signals are, in general, less susceptible to artifacts like motion artifacts or electrical noises. There are, however, also physiological components such as heartbeat, breathing, and Mayer-waves present in the signal. Although not an artifact, these components are usually filtered out since they are not useful in determining the pure hemodynamic response signal of the brain. Nevertheless, there is interesting information in the heartbeat. In this blog, we talk about taking advantage of the heartbeat in the NIRS signals and extracting the heart rate signal from them.

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Exercise Physiology integrating NIRS, ECG, and EMG as a learning tool
Exercise Physiology integrating NIRS, ECG, and EMG as a learning tool

Innovations travel back and forth between different departments within Artinis. Application Specialists give insight in customer requests, Research and Development find new measurement methods, Design and Engineering constantly look for further improvement of the equipment and Sales and Support find new ways to support every single customer. Especially for new employees, hands-on experience throughout the company is crucial in their development and no better way to do this than to set up a study.

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PROMPT project: towards personalized treatment of mobility dysfunction
PROMPT project: towards personalized treatment of mobility dysfunction

In this project we will focus on one of the most disabling symptoms of Parkinson’s disease, freezing of gait – episodic absence or reduction in the ability to produce an effective stepping in spite of the intention to walk (Nutt et al., 2011).

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Combining the world of NIRS and EEG
Combining the world of NIRS and EEG

EEG and fNIRS are complementary measuring techniques. EEG measures electrophysiological brain activation, that is the electromagnetic field created when neurons in the brain are firing. fNIRS measures the hemodynamic response, that is the change of oxygen in the blood when a brain region becomes active. By combining EEG and fNIRS, a more complete picture of brain activity is obtained: activation of neurons and energy demand of neurons. 

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NIRS — EEG references

Prof. Andrew Macnab, University British Colombia Canada

“With a little help from my friends. The Beatles said it -Artinis makes it happen. Consulting and customer service second to none.”

Daniel Aaron, Student at the University of California, Berkeley

“I’m very impressed with the material quality of the system; it’s by far the best manufactured commercial neurotech I’ve come across.”

The MediBrite is a CE marked medical device according to Medical Device Regulation (EU) 2017/745.

Other Artinis NIRS products are intended to be used for research applications only. Other Artinis products are not sold as Medical Device as defined in Medical Device Regulation (EU) 2017/745. Our products are not designed or intended to be used for the diagnosis or treatment of disease.