神经电流磁场的MRI实验研究  

MRI Experiment Study on Neuronal Current Magnetic Field

作　　者：熊红川[1,2] 罗程[1] 吕粟[3] 唐鹤菡[3] 吴岂柱[3] 龚启勇[3] 黄颖玲[1] 尧德中[1] 

机构地区：[1]电子科技大学神经信息教育部重点实验室,成都610054 [2]四川理工学院自动化与电子信息学院,四川自贡643000 [3]四川大学华西医院磁共振研究中心,成都610041

出　　处：《电子科技大学学报》2010年第6期948-951,共4页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60571019,30525030)

摘　　要：利用人类脑电alpha波在睁眼时被阻断的现象,设计了用磁共振检测脑电信号中最高能量段的alpha波的实验。结果表明,所得磁共振信号alpha频段在不同条件下有明显的改变,且主要在alpha活动明显的枕区有比较一致的变化,从而初步证明,在特定的条件下,应用磁共振检测神经电流活动信号是可能的。Neuronal current magnetic resonance imaging（nc-MRI） can improve the temporal resolution of functional magnetic resonance imaging（fMRI）.To explore the feasibility of the nc-MRI,an experiment is designed by,using MR to detect the differences of alpha wave activity under different conditions.One of the conditions is in the darkness with eyes closed to promote alpha wave activity and the other is a visual stimulus with eyes opened to suppress alpha wave activity.Our results show that the MR signal obtained in the alpha band changes significantly,and the changes in the occipital area where the alpha activity is prominent are more consistent.that means,in particular conditions,it is possible to apply nc-MRI to detect neuronal current activity.

关 键 词：alpha节律 生物电位 直接检测 磁共振成像 神经元 

分 类 号：TN081[电子电信—物理电子学]