Direction-specific fMRI adaptation reveals the visual cortical network underlying the “Rotating Snakes” illusion

Ashida, Hiroshi; Kuriki, Ichiro; Murakami, Ikuya; Hisakata, Rumi; Kitaoka, Akiyoshi

doi:10.1016/j.neuroimage.2012.03.033

Cited by 30 publications

(38 citation statements)

References 42 publications

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“…Conway et al20 reported that the differences in response latency to different contrast elements are responsible for the illusion and provided the first evidence that pairs of stimuli with the luminance sequence that characterizes the RSI can generate motion signals in the primary visual cortex (V1) and MT direction-selective (DS) neurons. The two fMRI studies that directly investigated the RSI3031 recorded an increase in neural activity in the motion-sensitive area of the human visual cortex during the observation of the RSI, suggesting that local motion signals in response to asymmetric spatial patterns at the level of V1 are integrated in the motion-sensitive cortical area (V5-MT complex) that creates the vivid rotatory motion perception. Global rotation is a peculiar type of motion that requires specifically V5-MT activity, no matter whether it is real32 or illusory21.…”

Section: Discussionmentioning

confidence: 99%

Do Fish Perceive Illusory Motion?

Gori

Agrillo

Dadda

et al. 2014

Sci Rep

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Motion illusion refers to a perception of motion that is absent or different in the physical stimulus. These illusions are a powerful non-invasive tool for understanding the neurobiology of vision because they tell us, indirectly, how we process motion. There is general agreement in ascribing motion illusion to higher-level processing in the visual cortex, but debate remains about the exact role of eye movements and cortical networks in triggering it. Surprisingly, there have been no studies investigating global illusory motion evoked by static patterns in animal species other than humans. Herein, we show that fish perceive one of the most studied motion illusions, the Rotating Snakes. Fish responded similarly to real and illusory motion. The demonstration that complex global illusory motion is not restricted to humans and can be found even in species that do not have a cortex paves the way to develop animal models to study the neurobiological bases of motion perception.

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Section: Discussionmentioning

confidence: 99%

Do Fish Perceive Illusory Motion?

Gori

Agrillo

Dadda

et al. 2014

Sci Rep

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“…Analysis of eye-movement data followed the method of Murakami (2004) (Murakami, 2004(Murakami, , 2010Murakami et al, 2006;Ashida et al, 2012). Drift eye movements during fixation were analyzed along vertical and horizontal axes separately.…”

Section: Offline Eye-movement Recordingmentioning

confidence: 99%

Neural Correlates of Induced Motion Perception in the Human Brain

et al. 2012

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A physically stationary stimulus surrounded by a moving stimulus appears to move in the opposite direction. There are similarities between the characteristics of this phenomenon of induced motion and surround suppression of directionally selective neurons in the brain. Here, functional magnetic resonance imaging was used to investigate the link between the subjective perception of induced motion and cortical activity. The visual stimuli consisted of a central drifting sinusoid surrounded by a moving random-dot pattern. The change in cortical activity in response to changes in speed and direction of the central stimulus was measured. The human cortical area hMTϩ showed the greatest activation when the central stimulus moved at a fast speed in the direction opposite to that of the surround. More importantly, the activity in this area was the lowest when the central stimulus moved in the same direction as the surround and at a speed such that the central stimulus appeared to be stationary. The results indicate that the activity in hMTϩ is related to perceived speed modulated by induced motion rather than to physical speed or a kinetic boundary. Early visual areas (V1, V2, V3, and V3A) showed a similar pattern; however, the relationship to perceived speed was not as clear as that in hMTϩ. These results suggest that hMTϩ may be a neural correlate of induced motion perception and play an important role in contrasting motion signals in relation to their surrounding context and adaptively modulating our motion perception depending on the spatial context.

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“…Conway et al (2005) suggested that these responses occur in the neurons in MT (middle temporal) and Kuriki et al (2008) showed that in humans hMT+ (middle temporal complex) responds to this illusion. Moreover, Ashida et al (2012) showed evidence that V1 (primary visual cortex) -V4, V3A (V3 accessory), and MT+ are involved in this illusion. Recently, Kanazawa et al (2013) reported that six-to eight-month-old infants see the illusory motion in the Rotating Snakes illusion, however, it has never been shown that non-human species experiences this illusion.…”

Section: Introductionmentioning

confidence: 98%

Cats and Illusory Motion

Bååth¹,

Seno²,

Kitaoka³

2014

PSYCH

Self Cite

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We present the first evidence that cats experience visual illusions and that a non-human animal can see illusory motion. In three videos we show cats reacting with hunting behavior when watching the Rotating Snakes illusion. This is taken to mean that cats see illusory motion in this image due to the propensity of cats to pursue movement. This is further supported by a survey where 29% of the respondents answered that their cat reacted to the illusion. A number of preferential looking experiments were also indicative of cats experiencing the illusion, but not conclusively so.

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Direction-specific fMRI adaptation reveals the visual cortical network underlying the “Rotating Snakes” illusion

Cited by 30 publications

References 42 publications

Do Fish Perceive Illusory Motion?

Do Fish Perceive Illusory Motion?

Neural Correlates of Induced Motion Perception in the Human Brain

Cats and Illusory Motion

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