Human cortical area responding to stimuli in apparent motion
Human cortical area responding to stimuli in apparent motion
复制标题
人类皮质区域对视运动刺激做出反应
作者：
Y. Kaneoke;M. Bundou;S. Koyama;Hiroyuki Suzuki;R. Kakigi
表观运动是对物体真实平滑运动的感知，该物体首先在一个地方闪烁，然后在另一个地方闪烁。为了研究人类皮质对表观运动刺激的反应，我们使用多通道生物磁力计记录了四名正常受试者中这些刺激引起的磁场。结果表明，存在一个对表观运动刺激完全敏感的局部皮层区域，与平滑运动的刺激相同。在三个受试者中，该区域对应于 MT/V5 的人类同源物。此外，纹外皮质中的同一区域参与短程（0.1°）视运动过程以及长程（1.0°）视运动过程。
APPARENT motion is the perception of the realistic smooth motion of an object which flashes first at one place then at another. To investigate human cortical responses to stimuli in apparent motion, we used a multi-channel biomagnetometer to record the magnetic fields evoked by these stimuli in four normal subjects. The results showed the presence of a localized cortical area exclusively sensitive to apparent motion stimuli that is identical to that for smooth motion. In three subjects this area corresponded to the human homologue of MT/V5. Moreover, the same region in the extrastriate cortex was involved in the short range (0.1°) apparent motion process as well as the long range (1.0°) process.