Functional brain imaging of the Rotating Snakes illusion by fMRI
Functional brain imaging of the Rotating Snakes illusion by fMRI
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DOI：
10.1167/8.10.16
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发表时间：
2008-01-01
影响因子：
1.8
通讯作者：
Kitaoka, Akiyoshi
中科院分区：
文献类型：
--
作者：
Kuriki, Ichiro;Ashida, Hiroshi;Kitaoka, Akiyoshi
从静态图像中诱发的虚幻运动知觉的神经基础还没有得到很好的证实。我们使用功能磁共振成像(FMRI)技术检测了当向参与者展示静态错觉运动图像(旋转的蛇)时，人类视觉皮质运动敏感区的神经活动的变化。比较了产生错觉运动知觉的测试刺激和没有产生错觉的对照刺激之间的血氧水平依赖(BOLD)信号变化。还比较了有眼球运动和没有眼球运动的刺激。如果伴随眼球运动，测试刺激的信号变化明显大于对照刺激。另一方面，如果需要稳定的注视，测试刺激和对照刺激之间的信号变化差异较小。这些结果支持了这一经验发现，即这种错觉与眼动的某些成分有关。
The neural basis of illusory motion perception evoked from static images has not been established well. We examined changes in neural activity in motion sensitive areas of the human visual cortex by using functional magnetic resonance imaging (fMRI) technique when a static illusory-motion image ('Rotating Snakes') was presented to participants. The blood-oxygenation-level dependent (BOLD) signal changes were compared between the test stimulus that induced illusory motion perception and the control stimulus that did not. Comparison was also made between those stimuli with and without eye movements. Signal changes for the test stimulus were significantly larger than those for the control stimulus, if accompanied by eye movements. On the other hand, the difference in signal changes between test and control stimuli was smaller, if steady fixation was required. These results support the empirical finding that this illusion is related to some component of eye movements.