Functional near infra-red spectroscopy (fNIRS) is a non-invasive tool for the investigation of cerebral hemodynamics. NIRS is developed to detect tissue oxygenation changes in the brain and muscle. This detection of tissue oxygenation is possible because of the relative transparency of biological tissues to NIR wavelengths, and uses the oxygen-dependent absorption spectra of the main tissue chromophores-haemoglobin, myoglobin and cytochrome-c oxidase at these wavelengths. NIRS has been applied to various research domains in healthy populations and patients with neurological and psychiatric disorders.
Specifications:
• Measurements: changes in oxyhemoglobin, deoxyhemoglobin and total hemoglobin concentrations
• Light source: Laser diodes (Class 1M; IEC60825-1)
• Wavelenghts: 695 nm and 830 nm
• Number of emitters: 18
• Number of detectors: 16
• Number of measurement channels: 52
• Fiber holder configurations: grids of 3x3 (dual), 4x4 (dual), 3x5 (dual) and 3x11 (single)
• Sampling rate: 10Hz
Applications:
• Human brain mapping
• Cognitive neuroscience
• Diagnosis of psychiatric disorders: depression, bipolar disorder and schizophrenia
Locations: ZB217d
Charging rate (1.5 hours per each session):
PolyU Users (per session): $220
External Users (UGC-funded) (per session): $440
Other External Users (per session): $1100
To use, please go to the URFMS
Equipment in-charge: Dr. Tommy LAM
