2004年 How nonlinear is the hemodyanmic response?: analysis of EEG/fMRI with semiparametric autoregression. 10th Annual Meeting of the Organization for Human Brain Mapping Fumikazu Miwakeichi, Pedro A. Valdes-Sosa, Hiroaki Mizuhara, Li-Qun Wang, Koichiro Kobayashi, Yoko Yamaguchi