Data Sheet

fNIRS Sensor
Data Sheet
!
PAGE 2 OF 5
!
!
!
infrared region of the spectrum. The reflected
light of each one of these LED’s is absorbed by
a photodiode and then this current is converted
into a digital value that is sent via SPI. This
sensor can be used to estimate the local oxygen
saturation level in the blood to derive information
about the activity of the perfused tissue, for
example, to measure and track activity of a
specific brain region by measuring variations in
oxygen saturation levels. Additionally, this
sensor can be used to extract heart rate data.
USAGE NOTES
> Should be placed on the center of the
forehead for accurate readings
> biosignalsplux firmware version 3.4 or greater
required
OPTICAL CHARACTERISTICS
Infrared emitter relative spectral emission
I
rel
=f(λ), T
A
=25ºC, I
F
= 20mA