Cortivision actively develops its own fNIRS data analysis software, CortiPrism. This analysis software suite can take you from a raw .snirf data file to fNIRS results and images through a user-friendly point-and-click interface.
CortiPrism guides you through a predefined but adjustable pipeline that contains commonly used algorithms such as SCI-based channel rejection (to reject bad channels), temporal derivative distribution repair (to fix spikes or baseline changes caused by movement), filtering, short-channel correction (to correct for non-cerebral blood flow effects) and conversion from the two wavelengths to HbR and HbO measurements through the modified Beer-Lambert law. It provides both simple averaging and GLM-based averaging options to analyze event-related fNIRS activity. It also has brain visualization options that make it easy to create a HbO and HbR map superimposed on a brain model, and to export these images for use on a poster or in a scientific article. Multi-participant analyses and data visualizations are available, and CortiPrism even reorders the data files for a project in the BIDS format for easier sharing with other researchers.
