Data Sheet

biosignalsplux
User Manual
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3.2.8 fNIRS
Figure 58: biosignalsplux fNIRS sensor.
The fNIRS (functional near-infrared spectroscopy) sensor measures the red and infrared
light reflectance in the cortical tissue. This sensor is typically applied on the forehead
and it can be used to estimate the blood oxygen saturation level in the brain tissue.
Possible applications include brain activity monitoring, functional neuroimaging and
advanced BCI systems.
Firmware requirements
The fNIRS sensor requires a specific biosignalsplux firmware version (v.3.4) to work. Please
follow the instructions in chapter 8 Firmware Updates & Upgrades to check the current
firmware version of your device and to upgrade or downgrade the firmware to version
3.4. if another version is currently being used on your device.
You can download the correct firmware here (v.3.4 for SpO2 & fNIRS):
http://biosignalsplux.com/en/software/utilities
After checking and, if required, downgrading or upgrading your device’s firmware, remove
your device from the OpenSignals (r)evolution device manager and your computer’s
Bluetooth list and reconnect your device inside OpenSignals (r)evolution. If the firmware
change has been successfully, your device should now be displayed with an orange
biosignalsplux in your device manager (see Figure 59).