Measurement of Brain Function of Car Driver Using Functional Near-Infrared Spectroscopy (fNIRS)

摘要

The aim of this study is to propose a method for analyzing measured signal obtainedfrom functional Near-Infrared Spectroscopy (fNIRS), which is applicable forneuroimaging studies for car drivers. We developed a signal processing method bymultiresolution analysis (MRA) based on discrete wavelet transform. Statistical groupanalysis using Z-score is conducted after the extraction of task-related signal usingMRA. Brain activities of subjects with different level of mental calculation aremeasured by fNIRS and fMRI. Results of mental calculation with nine subjects by usingfNIRS and fMRI showed that the proposed methods were effective for the evaluation ofbrain activities due to the task. Finally, the proposed method is applied for evaluatingbrain function of car driver with and without adaptive cruise control (ACC) system fordemonstrating the effectiveness of the proposed method. The results showed that frontallobe was less active when the subject drove with ACC.