LOCALIZATION OF VISUALLY EVOKED CORTICAL ACTIVITY USING MAGNETIC-RESONANCE-IMAGING AND COMPUTERIZED-TOMOGRAPHY

被引：11

作者：

SREBRO, R

PURDY, PD

机构：

[1] UNIV TEXAS,SW MED CTR,DEPT RADIOL,DALLAS,TX 75235

[2] UNIV TEXAS,SW MED CTR,DEPT NEUROL & NEUROSURG,DALLAS,TX 75235

来源：

VISION RESEARCH | 1990年 / 30卷 / 03期

关键词：

Computer graphics; Computerized tomography; Current source density; Magnetic resonance imaging; Visually evoked potential;

D O I：

10.1016/0042-6989(90)90077-X

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

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. © 1990.

引用

页码：351 / 358

页数：8

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