Morrone M C, Tosetti M, Montanaro D, Fiorentini A, Cioni G, Burr D C
Istituto di Neurofisiologia del CNR, Via G. Moruzzi 1, 56127 Pisa, Italy.
Nat Neurosci. 2000 Dec;3(12):1322-8. doi: 10.1038/81860.
The continuously changing optic flow on the retina provides information about direction of heading and about the three-dimensional structure of the environment. Here we use functional magnetic resonance imaging (fMRI) to demonstrate that an area in human cortex responds selectively to components of optic flow, such as circular and radial motion. This area is within the region commonly referrred to as V5/MT complex, but is distinct from the part of this region that responds to translation. The functional properties of these two areas of the V5/MT complex are also different; the response to optic flow was obtained only with changing flow stimuli, whereas response to translation occurred during exposure to continuous motion.
视网膜上不断变化的视觉流提供了关于前进方向和环境三维结构的信息。在这里，我们使用功能磁共振成像（fMRI）来证明人类皮层中的一个区域对视觉流的成分有选择性反应，比如圆周运动和径向运动。这个区域位于通常被称为V5/MT复合体的区域内，但与该区域中对平移做出反应的部分不同。V5/MT复合体这两个区域的功能特性也有所不同；对视觉流的反应仅在流动刺激变化时获得，而对平移的反应则在持续运动暴露期间出现。
