Increased prefrontal cortex connectivity during cognitive challenge assessed by fNIRS imaging

Frigyes Samuel Racz, Peter Mukli, Zoltan Nagy, Andras Eke
2017 Biomedical Optics Express  
In this study, functional near-infrared spectroscopy (fNIRS) and the graph theory approach were used to access the functional connectivity (FC) of the prefrontal cortex (PFC) in a resting state and during increased mental workload. For this very purpose, a pattern recognition-based test was developed, which elicited a strong response throughout the PFC during the test condition. FC parameters obtained during stimulation were found increased compared to those in a resting state after correlation
more » ... based signal improvement (CBSI), which can attenuate those components of fNIRS signals which are unrelated to neural activity. These results indicate that the cognitive challenge increased the FC in the PFC and suggests a great potential in investigating FC in various cognitive states.
doi:10.1364/boe.8.003842 pmid:28856054 pmcid:PMC5560845 fatcat:nr6zfuc4ljgqfdc2jgsfgs4fku