摘要：The aim of this study is to propose a method for analyzing measured signal obtained
from functional Near-Infrared Spectroscopy (fNIRS), which is applicable for
neuroimaging studies for car drivers. We developed a signal processing method by
multiresolution analysis (MRA) based on discrete wavelet transform. Statistical group
analysis using Z-score is conducted after the extraction of task-related signal using
MRA. Brain activities of subjects with different level of mental calculation are
measured by fNIRS and fMRI. Results of mental calculation with nine subjects by using
fNIRS and fMRI showed that the proposed methods were effective for the evaluation of
brain activities due to the task. Finally, the proposed method is applied for evaluating
brain function of car driver with and without adaptive cruise control (ACC) system for
demonstrating the effectiveness of the proposed method. The results showed that frontal
lobe was less active when the subject drove with ACC.
