Functional near-infrared spectroscopy (fNIRS, also known as “optical diffuse imaging”) allows one to map on the subject’s scalp local changes in concentration of oxygenated and deoxygenated hemoglobin, which indirectly reflect neuronal activation (so-called neurovascular coupling). Since fNIRS uses near-infrared light, hence low-energy harmless photons, experiments can be repeated with complete safety. This brain imaging modality is  easy to use, low cost, noninvasive and portable to the patient’s side. GFLI funding has allowed the CENIR to be equipped with an fNIRS … Continue reading