• functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive neuroimaging method that, similar to fMRI, takes advantage of neurovascular coupling to detect cortical brain activity
  • fNIRS measures concentration changes in oxygenated and deoxygenated haemoglobin via their different spectral absorption characteristics
  • Via the typical hemodynamic response function that goes along with neuronal activity active brain regions can be detected with high spatial resolution

Lab equipment:

  • a portable NIRSportTM NIRS system (NIRx Medizintechnik GmbH) with time-multiplexed double-wavelength LED control
    • the 8 LED sources can be combined individually with the active 8 sensors resulting in a theoretical maximum of 64 channels
    • both sources and sensors are - in accordance to the question - placed in 130 position an EEG cap
  • the recording via a laptop (Intel Core i5, 8GB DDR3 500GB SSD) equipped with NIRStar recording software
  • NIRS Brain AnalyzIR Toolbox (Santosa, Zhai, Fishburn & Huppert, 2018) for Matlab (MathWorks) is used for statistical analyses
  • the system is compatible with the hardware and software of the EEG-lab