三维脑电数据的方位投影显示  

The Azimuth Projection for the Display of Three Dimensional EEG Data

作　　者：吴丹[1] 尧德中[1] 

机构地区：[1]电子科技大学生命科学与技术学院,四川成都610054

出　　处：《中国医学物理学杂志》2006年第5期358-363,共6页Chinese Journal of Medical Physics

基　　金：国家自然科学基金资助课题(60571019)

摘　　要：脑电(EEG)是在头表对大脑的神经电生理活动的一种记录。脑电数据的显示有平面脑地形图、立体真实头表显示等多种方式。本文给出了一种基于地图投影理论的二维显示方法:等角方位投影。仿真结果表明,该方法简单方便,且不丢失任何信息,在头表的任何位置均无变形,所需空间与一般二维显示相同,同时与真实头表显示一样,包含了三维的数据信息,因此是脑电数据显示的一种新途径,方便脑电数据分析。Electroencephalogram （EEG） is a scalp record of the neural electric activities of the brain. There are many kinds of methods to display the EEG data, such as a projective plane or the realistic head surface. In this work, one of the atlas projection methods, azimuth conformal projection, was tested and recommended as a new way of a planar EEG display. The method details are given and numerically compared with the normal projective plane display. The results indicate that the azimuth projection has many advantages： the transform is simple, convenient, and it can keep all the information. It includes 3-D data without shape change, and just need the same space as the projective plane. Therefore, it can help to analyze the data effectually.

关 键 词：脑电 地图投影 方位投影 图像显示 

分 类 号：R318[医药卫生—生物医学工程]