NIRS & EEGNear Infrared Spectroscopy (NIRS) is a functional imaging technique, that employs low-energy optical radiation (mostly in 2-3 different wavelengths) to assess absorption changes in the underlying brain tissue. In fact, these absorption changes reflect the changes in local concentration of oxy- and deoxy-hemoglobin, which in turn are related to and triggered by the alternation in neuronal activity. That is, NIRS is a non-invasive imaging tool and utilizes endogenous chromophores to assess brain’s functional activity.

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