Functional Near-Infrared Spectroscopy (fNIRS) is a non-invasive, portable method employing near-infrared light propagating diffusely through the scalp and brain, for functional monitoring and imaging of human brain hemodynamics.

This neuroimaging modality is particularly suiteFigure_fNIRSd for populations and studies where other imaging options are limited, such as infants, children, and volunteers/patients interacting freely with their environment. fNIRS has found a wide range of applications to study normal and pathological brain physiology, including perception and cognition, motor control, psychiatric conditions (depression, schizophrenia), and behavioral and cognitive development in infants and children.

More background information on NIRS can be found on the Scholarpedia webpage. A recent special issue of NeuroImage provides a thorough review of the field, as well as publications on state-of-the-art applications. The introduction to the special issue can be found here. The Society for Functional Near Infrared Spectroscopy runs a conference every two years and hosts a Facebook page from which one can connect with the international fNIRS community.


Learn more about our fNIRS resources, training opportunities, and research topics .

Github Code:
 Homer3 and AtlasViewer  on Github.

Please contact Meryem Yücel if you need further assistance.