• MRI
  • fNIRS
  • HPC
  • Cognition
  • Animals
  •  The experimental platform for Functional Near-infrared Spectroscopy (fNIRS) is one of the key experimental platforms built by the State Key Laboratory in recent years. FNIRS is an emerging technique for functional brain imaging that has shown great potential in various fields of neuroscience. FNIRS system is portable, has no strict requirements on the experimental environment, and is highly tolerant to movement artefacts. Particularly, FNIRS can measure brain activity of multi-persons simultaneously, and therefore is an ideal choice for studies in naturalistic environment such as mother-kids interactions or the emergence of leader in a group.

    This experimental platform is equipped with one Hitachi ETG-4000 system and two Shimadzu LABNIRS systems that are used for research on small group activity and large group activity respectively. The fNIRS system measures the absorption and scattering of near-infrared light of two or three wavelengths (e.g., ETG-4000 uses two wavelengths, 695 and 830nm) to measure deoxygenated hemoglobin (HbR) and oxygen Hemoglobin (HbO) concentrations changes in brain tissues, which indirectly reflect the activities of neurons, and therefore establishes a link between specific behaviors and brain functions. Each system has more than 50 measurement channels. After customized grouping, the outer cortex of several different functional systems in one or multi-brains can be covered simultaneously. The sampling rate can be as high as >10 Hz and the spatial resolution can be 2 to 3 cm. In addition, the system can be made compatible with other brain imaging systems and can measure simultaneously with fMRI, EEG / ERP, TMS, and other techniques. In short, fNIRS is an indispensable part of the laboratory’s facilities and will play an irreplaceable role in cognitive neuroscience research.