The brain is as active during rem ( rapid eye movement ) sleep - when most vivid dreams occur - as it is when fully awake , says dr , eric nofzinger at the university of pittsburgh 皮斯堡大學(xué)的教授說到,熟睡時(shí)在眼睛快速轉(zhuǎn)動(dòng)的時(shí)候大腦是活躍的- - -當(dāng)產(chǎn)生生動(dòng)的夢境時(shí)- -那個(gè)時(shí)候大腦是完全清醒的。