Kumar T, Glaser D A
Department of Physics, Division of Neurobiology, University of California, Berkeley, CA 94720, USA.
Proc Natl Acad Sci U S A. 2006 Feb 7;103(6):1947-52. doi: 10.1073/pnas.0510236103. Epub 2006 Jan 30.
Experiments to determine the optimum conditions for perceiving illusory motion in Engima-like patterns have also demonstrated that the illusory motion is not the result of unintended motion of the image on the retina due to microsaccades or accommodative changes in the lens of the eye but instead has a cortical origin. The perceived illusory activity is believed to be a consequence of neural signals emanating from high-contrast bars and edges in the image that emit randomly fluctuating signals, as expected from spiking cortical neurons. These fluctuations may induce illusory motion in the channels by a mechanism similar to that responsible for the Omega effect, in which sequences of random patterns of black dots presented in an annular channel produce the perception of illusory rotation of these dots within the annulus.
确定在类似Enigma图案中感知错觉运动的最佳条件的实验还表明，错觉运动不是由于微扫视或眼睛晶状体的调节变化导致图像在视网膜上意外移动的结果，而是具有皮质起源。据信，所感知到的错觉活动是图像中高对比度条纹和边缘发出随机波动信号的神经信号的结果，正如从发放脉冲的皮质神经元所预期的那样。这些波动可能通过一种类似于导致欧米伽效应的机制在通道中诱发错觉运动，在欧米伽效应中，环形通道中呈现的黑点随机图案序列会产生这些点在环内错觉旋转的感知。
