COMPLEXITY ANALYSIS OF FUNCTIONAL NEAR-INFRARED SPECTROSCOPY SIGNALS (MonAmOR2)

Author(s) : Koray Ciftci (Bogazici University, Turkey) Yasemin Kahya (Bogazici University, Turkey) Bülent Sankur (Bogazici University, Turkey) Ata Akin (Bogazici University, Turkey)

Abstract : The main hypothesis tested in this study is that cognitive activity causes a change in the complexity of functional near-infrared spectroscopy (fNIRS) signals. We calculated neural complexity (CN) of fNIRS signals obtained during oddball and mental arithmetic tasks. For control, data during a no task, eyes closed condition was also analyzed. We showed that cognitive activity causes a considerable increase in the complexity of the signals. We also present the time course of change of neural complexity during an experimental paradigm.

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