Motion-responsive regions of the human brain
Motion-responsive regions of the human brain
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DOI：
10.1007/s002210050804
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发表时间：
1999-08
影响因子：
2
通讯作者：
S. Sunaert;P. Hecke;G. Marchal;G. Orban
中科院分区：
文献类型：
--
作者：
S. Sunaert;P. Hecke;G. Marchal;G. Orban
功能磁共振成像被用来通过对比运动和静止的随机纹理图案的被动观看来绘制人脑的运动反应区域。如果这些区域在群体分析中或在单一受试者分析的大多数半球中达到显著水平，则它们被保留为运动反应区域。它们包括众所周知的区域，如V1、HMT/V5+和hV3A，但也包括几个枕颞区、枕顶区、顶区和额区。这些区域中的大多数激活的时间过程都是相似的。双眼和单眼的运动反应几乎相同。闪光诱导的激活在这些运动反应区域之间引入了二分法。早期的枕区和枕颞区对闪光反应良好，而闪光反应随着一个人移动到枕顶区然后是顶区而逐渐消失。最后，在超过四倍的范围内，除V1外，刺激直径对运动激活几乎没有影响。
Functional magnetic resonance imaging was used to map motion responsive regions of the human brain by contrasting passive viewing of moving and stationary randomly textured patterns. Regions were retained as motion responsive if they reached significance either in the group analysis or in the majority of hemispheres in single-subject analysis. They include well-known regions, such as V1, hMT/V5+, and hV3A, but also several occipito-temporal, occipito-parietal, parietal, and frontal regions. The time course of the activation was similar in most of these regions. Motion responses were nearly identical for binocular and monocular presentations. Flicker-induced-activation introduced a dichotomy amongst these motion responsive regions. Early occipital and occipito-temporal regions responded well to flicker, while flicker responses gradually vanished as one moved to occipito-parietal and then parietal regions. Finally, over a more than four-fold range, stimulus diameter had little effect on the motion activations, except in V1.