The ‘Rotating Snakes’ in Smooth Motion do Not Appear to Rotate

Tomimatsu, Erika; Ito, Hiroyuki; Seno, Takeharu; Shoji, Shuichi

doi:10.1068/p6455

Cited by 5 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By contrast, the streaming in the Enigma illusion did not apparently decrease, and the Ouchi illusion was even enhanced by adding smooth motion. The present results, showing differences in the time courses of perceived motion in the illusions, are consistent with the previous results (Billino et al, 2009;Tomimatsu et al, 2010).…”

Section: Ouchi and Enigma Illusionssupporting

confidence: 82%

Halt and recovery of illusory motion perception from peripherally viewed static images

Tomimatsu

Ito

Shoji

et al. 2011

Atten Percept Psychophys

Self Cite

View full text Add to dashboard Cite

We quantitatively investigated the halt and recovery of illusory motion perception in static images. With steady fixation, participants viewed images causing four different motion illusions. The results showed that the time courses of the Fraser-Wilcox illusion and the modified Fraser-Wilcox illusion (i.e., "Rotating Snakes") were very similar, while the Ouchi and Enigma illusions showed quite a different trend. When participants viewed images causing the Fraser-Wilcox illusion and the modified Fraser-Wilcox illusion, they typically experienced disappearance of the illusory motion within several seconds. After a variable interstimulus interval (ISI), the images were presented again in the same retinal position. The magnitude of the illusory motion from the second image presentation increased as the ISI became longer. This suggests that the same adaptation process either directly causes or attenuates both the Fraser-Wilcox illusion and the modified FraserWilcox illusion.

show abstract

Section: Ouchi and Enigma Illusionssupporting

confidence: 82%

Halt and recovery of illusory motion perception from peripherally viewed static images

Tomimatsu

Ito

Shoji

et al. 2011

Atten Percept Psychophys

Self Cite

View full text Add to dashboard Cite

show abstract

“…In support of this idea, Backus and Oruç (2005) found that saccade-like jumps in the Rotating Snakes pattern produced illusory rotation, whereas small jitter of the image was ineffective. Similarly, Tomimatsu et al (2010) found that fast displacements of the image produced a strong illusory percept, whereas smooth motion resulted in a much weaker illusion.…”

Section: Role Of Fixation Instability In the Perception Of The Rotatimentioning

confidence: 99%

Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion

2012

View full text Add to dashboard Cite

Certain repetitive arrangements of luminance gradients elicit the perception of strong illusory motion. Among them, the "Rotating Snakes Illusion" has generated a large amount of interest in the visual neurosciences, as well as in the public. Prior evidence indicates that the Rotating Snakes illusion depends critically on eye movements, yet the specific eye movement types involved and their associated neural mechanisms remain controversial. According to recent reports, slow ocular drift-a nonsaccadic type of fixational eye movement-drives the illusion, whereas microsaccades produced during attempted fixation fail to do so. Here, we asked human subjects to indicate the presence or absence of rotation during the observation of the illusion while we simultaneously recorded their eye movements with high precision. We found a strong quantitative link between microsaccade and blink production and illusory rotation. These results suggest that transient oculomotor events such as microsaccades, saccades, and blinks, rather than continuous drift, act to trigger the illusory motion in the Rotating Snakes illusion.

show abstract

“…However, possibly due to peripheral viewing, the illusion was not seen. As a dotted line biases its perceived motion direction to the line orientation (Ito et al 2009), detected motion directions in the shorter sector conditions may be circular along the disk edge. On the other hand, if the longer sector is misperceived in motion direction by the aperture problem, the perceived motion direction would also be circular around the disk.…”

Section: Resultsmentioning

confidence: 99%

“…The Chopsticks illusion and the Rotating Rings illusion (Anstis 2003) change the perceptual property of the intersections, resulting in a failure to track the intersection visually, although induced motion did not affect the tracking motion in spite of the perceived distortion of the motion path (Anstis and Ito 2010). Conversely, Tomimatsu et al (2010) showed that smooth pursuit eye movement greatly reduces the effect of the Rotating Snakes illusion.…”

Section: Introductionmentioning

confidence: 99%

Illusory Object Motion in the Centre of a Radial Pattern: The Pursuit-Pursuing Illusion

Ito

2012

i-Perception

Self Cite

View full text Add to dashboard Cite

A circular object placed in the centre of a radial pattern consisting of thin sectors was found to cause a robust motion illusion. During eye-movement pursuit of a moving target, the presently described stimulus produced illusory background-object motion in the same direction as that of the eye movement. In addition, the display induced illusory stationary perception of a moving object against the whole display motion. In seven experiments, the characteristics of the illusion were examined in terms of luminance relationships and figural characteristics of the radial pattern. Some potential explanations for these findings are discussed.

show abstract

The ‘Rotating Snakes’ in Smooth Motion do Not Appear to Rotate

Cited by 5 publications

References 6 publications

Halt and recovery of illusory motion perception from peripherally viewed static images

Halt and recovery of illusory motion perception from peripherally viewed static images

Microsaccades and Blinks Trigger Illusory Rotation in the “Rotating Snakes” Illusion

Illusory Object Motion in the Centre of a Radial Pattern: The Pursuit-Pursuing Illusion

Contact Info

Product

Resources

About