NIRxWINGS1 | fNIRS Systems | NIRS Devices | NIRx

The NIRxWINGS1 module for peripheral physiology measurements extends the NIRSport2. It comes with sensors for respiration, ExG, electrodermal activity (EDA -frequently referred to as Galvanic Skin Response), temperature, and PPG pulse oximetry (PPG). All signals are fully synchronized and in one data stream.

Wireless data transfer allows the participant to move freely while real-time data is stored on the device, streamed, and displayed in real time. The NIRSport2 platform and the NIRxWINGS1 provide an LSL stream.

NIRxWINGS Advantages

The assumption is that we only measure evoked hemodynamic signal. In reality, we also measure non-evoked, systemic activity as well. When we perform a measurement, we need not only to measure the metabolic brain activity (i.e. HbO and HbR) due to the task we are interested in, but also to measure several global body parameters (e.g. HR, BR, Tonic/Phasic Skin Conductance, Blood Pressure, SpO2) that can help to explain more variance in the fNIR signal and improve the outcome the research.

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With NIRxWINGS, you can move outside the lab into complex, dynamic, and multi-sensory real-world environments to conduct Systemic Physiology-Augmented fNIRS (SPA-fNIRS). The system enables new experimental paradigms and the creation of high-quality research databases. You can read more about the importance of physiological signals in fNIRS in this blog post.

NIRxWINGS connects to the NIRSport2 via bluetooth dongle. NIRSport2 can connect wirelessly to the acquisition computer so you can collect physiological measurements concurrently with fNIRS data on the go.

NIRxWINGS1 connects to the NIRSport2 via Bluetooth dongle. NIRSport2 can connect wirelessly to the acquisition computer so you can collect physiological measurements concurrently with fNIRS data on the go.

Key specifications

Data transmission: WiFi and internal storage (via Bluetooth connection to NIRSport2)

A/D Resolution: 24-Bit

Sampling Rate: 500 Hz

Export Data: CSV (text). Exported along with fNIRS data in .SNIRF format.

 

Sensors: combined PPG/HRV/SpO2, 12-bit solid state temperature, bioimpedance-based respiration, GSR, 4-channel ExG

Power Supply: Battery (5 h runtime)

Physical: 101 mm x 96 mm x 30 mm, 190 g (approx.)

 

Introducing NIRxWINGS2

NIRx is proud to introduce the next evolution in physiological sensing technology launching this year: NIRxWINGS2. Designed based on valuable customer feedback, NIRxWINGS2 enhances flexibility, signal quality, and overall usability while maintaining the core functionality of its predecessor, NIRxWINGS1.

 

There have been over 1000 publications with our systems, check out more papers on this page.

+ Selected References

Scholkmann, F., Tachtsidis, I., Wolf, M., & Wolf, U. (2022). Systemic physiology augmented functional near-infrared spectroscopy: a powerful approach to study the embodied human brain. Neurophotonics, 9(3), 030801.

Tachtsidis, I., & Scholkmann, F. (2016). False positives and false negatives in functional near-infrared spectroscopy: issues, challenges, and the way forward. Neurophotonics, 3(3), 031405.

Technical References:

von Lühmann, A., Boukouvalas, Z., Müller, K. R., & Adalı, T. (2019). A new blind source separation framework for signal analysis and artifact rejection in functional near-infrared spectroscopy. NeuroImage, 200, 72-88.

von Lühmann, A., Li, X., Gilmore, N., Boas, D. A., & Yücel, M. A. (2020). Open Access Multimodal fNIRS Resting State Dataset With and Without Synthetic Hemodynamic Responses. Frontiers in Neuroscience, 14.

Use Cases Useful to identify user attention, stress, and vigilance, to detect and differentiate evoked systemic physiology in fNIRs.

Ahn, S., Nguyen, T., Jang, H., Kim, J. G., & Jun, S. C. (2016). Exploring neuro-physiological correlates of drivers' mental fatigue caused by sleep deprivation using simultaneous EEG, ECG, and fNIRS data. Frontiers in human neuroscience, 10, 219.

Ortega, P., Zhao, T., & Faisal, A. A. (2020). HYGRIP: Full-Stack Characterization of Neurobehavioral Signals (fNIRS, EEG, EMG, Force, and Breathing) During a Bimanual Grip Force Control Task. Frontiers in Neuroscience, 14.

Mol, A., Maier, A. B., van Wezel, R. J., & Meskers, C. G. (2020). Multimodal monitoring of cardiovascular responses to postural changes. Frontiers in physiology, 11, 168.

Example Set Ups of NIRxWINGS with NIRSport2 for fNIRS measurements and physiological sensors.png