The NIRSIT is a light-weight, easily configurable, multi-channel fNIRS imaging system for prefrontal brain with high portability. fNIRS is an effective and non-invasive functional brain imaging device. It has custom-made dual wavelength VCSEL laser as illuminator with active detection technology for wearable brain imaging solution. This system allows real-time measurements of the prefrontal cortex.

Please find more information here.

NIRSIT Applications

•Cognitive study
•Characterization of metabolic changes
•Affective state decoding
•Brain computer interface

Technical Specification

Physical 
Dimensions

215 x 195 x 75 (mm)

Weight

500g

Operational

 
Illumination typeCustom dual wavelength VCSEL Laser
Number of Illumination Sources

24

Laser Output

3mW/Source

Wavelength

780 nm, 850 nm

Detection TypeActive Detection Sensor (no optical fibers
Sensor Type

PIN photodiode

Number of Detectors

32

Number of Detection Channels

Max 204 channels (DOT mode)

Source Detector Separation 

1.5cm, 2.12cm, 3 cm, 3.35cm

System scan rate

Max 32.552 Hz

PowerLithium ion polymer battery

3000mAh

Mode of Operation

Continuous Wave

Modulation Method

CDMA, TDMA

Electrical

 
Input Voltage

220V with 5V DC Charger

Digital OutputWLAN, USB 2.0 Serial Connection


Software Features

Software provides a mobile tablet based user friendly Graphical User Interface (GUI) for system control, real-time cortical 3D mapping of transient Oxy and De-oxy hemoglobin concentration variation.

•Automatic receiving end gain control
•Real time event recording
•Various data saving txt, csv
•Real-time Adaptive filtering and digital filters
•Motion artifact algorithm