Localization of visually evoked cortical activity using magnetic resonance imaging and computerized tomography.
Localization of visually evoked cortical activity using magnetic resonance imaging and computerized tomography.
复制标题
使用磁共振成像和计算机断层扫描来定位视觉诱发的皮层活动。
DOI：
10.1016/0042-6989(90)90077-x
复制
发表时间：
1990
期刊：
影响因子：
1.8
通讯作者：
Purdy,PD
中科院分区：
文献类型：
--
作者：
Srebro,R;Purdy,PD
诱发头皮电位，计算机断层扫描，磁共振成像一起使用，以本地化的视觉刺激引起的人类皮层活动。诱发电位测量的时间分辨率足以跟踪在几十毫秒的时期内演变的皮层活动的流动。通过用拉普拉斯算子对头皮电位场进行去卷积来增强空间定位。粘在头皮上的标记用来将三个几何参考框架统一到一个计算机图形数据库中。
Evoked scalp potentials, computerized tomography, and magnetic resonance imaging were used together to localize cortical activity evoked by visual stimuli in humans. The temporal resolution of evoked potential measurements is sufficient to track the flow of cortical activity which evolves in epochs of a few tens of msec. Spatial localization was enhanced by deconvolving scalp potential fields with a Laplacian operator. Markers glue to the scalp served to unify the three geometric reference frames into a single computer graphics database.