… A generally accepted explanation of the spiral illusion is that the receptor cells sensitive to
… of the illusion willbe increased by the accumulation of ‘learned records’ of the moving spiral. …

… here a new motion illusion that could represent the simplest pattern that elicits illusory motion
… Figure 1 represents the new Rotating-Tilted-Lines illusion. In its simplest form (figure 1a) …

… To test the above two cases (same stimulus but different percepts, and different stimuli but
same percept), we adopted three variations of the Fraser spiral. We based the construction of …

… We showed that the Poggendorff illusion was mainly a misangulation effect. We explained
the hierarchy of the illusion magnitudes found among variants of the Poggendorff illusion by …

… The present study was designed to evaluate its influence and, using variations of both size
… influence of visual angle upon the duration and perceived intensity of the spiral aftereffect. …

… In this chapter the original forms of some illusions of orientation and size will be shown
together with novel variants including portraits of those after whom they are named. …

… illusion is challenged by studying some known and new phenomena, by demonstrating the
perceptual complexity of the notion of visual illusion… to the perception of the illusion and to the …

… the spiral illusion can be formed by other orientation illusions including the Cafe Wall illusion.
… In summary, the new variations of spiral illusion introduced here suggest that perceived …

… The present study was designed to evaluate its influence and, using variations of both size
… influence of visual angle upon the duration and perceived intensity of the spiral aftereffect. …

… the original illusory pattern and measured the illusion strength … illusory motion in test figures.
The expected modulation of the … could see illusory motion in one of the color variations of the …