Toshiro Fujimoto, Eiichi Okumura, Atsushi Kodabashi, Kouzou Takeuchi, Toshiaki Otsubo, Katsumi Nakamura, Kazutaka Yatsushiro, Masaki Sekine, Shinichiro Kamiya, Susumu Shimooki, Toshiyo Tamura
We studied sex-related differences in gamma oscillation during an auditory oddball task, using magnetoencephalography and electroencephalography assessment of imaginary coherence (IC). We obtained a statistical source map of event-related desynchronization (ERD) / event-related synchronization (ERS), and compared females and males regarding ERD / ERS. Based on the results, we chose respectively seed regions for IC determinations in low (30-50 Hz), mid (50-100 Hz) and high gamma (100-150 Hz) bands. In males, ERD was increased in the left posterior cingulate cortex (CGp) at 500 ms in the low gamma band, and in the right caudal anterior cingulate cortex (cACC) at 125 ms in the mid-gamma band...
2016: Open Neuroimaging Journal