Functional Near-Infrared Spectroscopy (fNIRS)

The UConn Brain Imaging Research Core (BIRC) houses a NIRx NIRSport2 functional near-infrared spectroscopy (fNIRS) system equipped with 32 light sources and 32 detectors for non-invasive monitoring of brain activity.

fNIRS uses near-infrared light to measure changes in oxygenated and deoxygenated hemoglobin concentrations in cortical tissue. These hemodynamic changes provide an indirect measure of brain activity and allow researchers to investigate cortical responses during cognitive, motor, and behavioral tasks.

The NIRSport2 is a wearable neuroimaging system that supports brain activity measurements during tasks involving movement and naturalistic behavior, offering greater flexibility than conventional stationary neuroimaging methods.

System features include:

  • NIRx NIRSport2 wearable fNIRS system
  • 32 light sources and 32 detectors
  • Non-invasive measurement of cortical hemodynamic responses
  • Monitoring of oxygenated (HbO) and deoxygenated (HbR) hemoglobin changes
  • Applications in cognitive, motor, and behavioral neuroscience research
  • Support for research involving naturalistic tasks and movement

fNIRS Training

Researchers interested in using the NIRSport2 system should complete the BIRC fNIRS Training Request Form. BIRC staff will contact applicants to discuss equipment access, training requirements, and study-specific procedures.

Researchers must complete the applicable BIRC training and authorization requirements before independently operating the system.

fNIRS Safety and Participant Preparation

fNIRS is a non-invasive optical neuroimaging technique that uses near-infrared light rather than ionizing radiation. Researchers must follow the manufacturer's operating instructions and BIRC-approved procedures.

Before data collection, researchers should ensure appropriate optode placement, comfortable cap fitting, and suitable participant preparation. Equipment should be inspected and cleaned according to established procedures.

Only appropriately trained and authorized personnel should operate the system.

For additional information about the system, please visit the NIRx website.