Description
The FNIRS (Functional Near-Infrared Spectroscopy) sensor is a user-friendly sensor that uses two emitting LEDs—one in the red and one in the infrared spectral range—to measure the reflection of red and infrared light in cortical tissue.
It provides a non-invasive method for estimating local blood oxygen saturation to obtain information about the activity of perfused tissue, for example, to measure and track the activity of a specific brain region by detecting fluctuations in oxygen saturation. The sensor is primarily designed for measurements on the forehead.
The light reflected from each of these LEDs is detected by a photodiode, and this current is then converted into a digital value that is transmitted via SPI. In addition, the collected sensor data can be used to determine heart rate.
This sensor was developed in collaboration with the research and development company Charles River Analytics to offer a new, miniaturized FNIRS sensor that enables the acquisition of high-quality data in brain activity tracking applications while limiting costs to a fraction of the cost of current systems.
Features:
- Adjustable LED brightness
- Precise signal acquisition on the forehead
- Pre-conditioned digital output
- High signal-to-noise ratio
- Versatile design
- Medical-grade raw data output
Specifications:
- Dual LED illumination: 1 red and 1 infrared LED
- Red LED wavelength: 660 nm
- Infrared LED wavelength: 950 nm
- Detector sensitivity: 400 nm–110 nm (max. at 920 nm)
- Resolution: 24-bit
- Sampling rate: 500 Hz
- Cable length: 100 cm ± 0.5 cm
- Connector type: UC-E6 (Male plug; must be connected to a biosignalsplux acquisition station)
- Compatibility:
This sensor is only compatible with the biosignalsplux acquisition system
Documents:
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Datasheet
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User Manual
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Sample Signal
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OpenSignals (r)evolution (Windows, macOS, Linux)
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OpenSignals Mobile (Android)
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Application Programming Interfaces (APIs) and Sample Code on GitHub
Related Products:
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