An MEG study into the visual perception of apparent motion in depth

2006 ◽  
Vol 403 (1-2) ◽  
pp. 40-45 ◽  
Author(s):  
Chia-Yen Yang ◽  
Jen-Chuen Hsieh ◽  
Yin Chang
Keyword(s):  
Visual Perception ◽  
Apparent Motion ◽  
Motion In Depth

Visual Perception of Apparent Motion Abides by Minimization Principles of Geometry

2021 ◽  
Author(s):  
Yaxin Liu ◽  
Stella F. Lourenco
Keyword(s):  
Visual Perception ◽  
Target Detection ◽  
Apparent Motion ◽  
Visual Space ◽  
Detection Task ◽  
Newtonian Physics ◽  
Kinematic Geometry ◽  
Shed Light ◽  
Target Detection Task ◽  
Perceptual Phenomenon

Apparent motion is a robust perceptual phenomenon in which observers perceive a stimulus traversing the vacant visual space between two flashed stimuli. Although it is known that the “filling-in” of apparent motion favors the simplest and most economical path, the interpolative computations remain poorly understood. Here, we tested whether the perception of apparent motion is best characterized by Newtonian physics or kinematic geometry. Participants completed a target detection task while Pacmen- shaped objects were presented in succession to create the perception of apparent motion. We found that target detection was impaired when apparent motion, as predicted by kinematic geometry, not Newtonian physics, obstructed the target’s location. Our findings shed light on the computations employed by the visual system, suggesting specifically that the “filling-in” perception of apparent motion may be dominated by kinematic geometry, not Newtonian physics.

Action induction due to visual perception of linear motion in depth

2015 ◽  
Vol 81 (1) ◽  
pp. 131-142
Author(s):  
Claudia Classen ◽  
Armin Kibele
Keyword(s):  
Visual Perception ◽  
Linear Motion ◽  
Motion In Depth

The Visual Perception of Motion in Depth

1979 ◽  
Vol 241 (1) ◽  
pp. 136-151 ◽  
Author(s):  
David Regan ◽  
Kenneth Beverley ◽  
Max Cynader
Keyword(s):  
Visual Perception ◽  
Motion In Depth

The cerebral activity related to the visual perception of forward motion in depth

Brain ◽  
1994 ◽  
Vol 117 (5) ◽  
pp. 1039-1054 ◽  
Author(s):  
B. M.de Jong ◽  
S. Shipp ◽  
B. Skidmore ◽  
R. S. J. Frackowiak ◽  
S. Zeki
Keyword(s):  
Visual Perception ◽  
Forward Motion ◽  
Motion In Depth ◽  
Cerebral Activity

scholarly journals Illusory Snakes Might Be Due to Asynchronized Respective Field Remapping

2019 ◽  
Author(s):  
Ahmad Yousef
Keyword(s):  
Visual Perception ◽  
Apparent Motion ◽  
Peripheral Vision ◽  
Visual Awareness ◽  
Visual Space ◽  
Peripheral Retina ◽  
Conscious Perception ◽  
Illusory Motion ◽  
Central Retina ◽  
Respective Field

In this proposal, we try to virtually navigate inside the human brain to understand the neural mechanism of the perception of illusory snakes. To achieve this mission, we have to imagine the neural network of the visual motion perception during spontaneous saccadic eye movements; and digging into clear distinction between the foveal versus the peripheral visual receptive field remapping. We had previously discussed that conscious perception generated by the central retina has very different attributes than the visual awareness generated by the peripheral retina. It was clear that the central retina triggers visual perception which decelerates the apparent motion of the cyclic elements, and enlarge the size of these elements, see reference 2. The peripheral retina , however, not only accelerates the apparent motion, but it generates illusory motion reversals, see reference 19. Since there are clear discrepancies in the spatiotemporal characteristics between the central and the peripheral retina in the visual awareness, we hypothesized that the illusory rotating snakes might be due to asynchronized respective field remapping; namely, a rivalrous remapping processes of the central versus the peripheral retinal images. In another word, the respective field remapping process triggered by the central retina has different spatial and temporal feeds to the visual awareness than the retinal peripheries. Interestingly, it had been found that deactivating the retinal peripheries through significant reduction against the contrast of the stimulus (that may stop the retinal peripheries from signaling the brain) eliminates the rotating snakes illusion. Elimination that might evidence the role of active retinal peripheries in creating the perception of illusory snakes. Collectively, we think that illusory snakes is due to a rivalry between the central and the peripheral retina; and their corresponding conscious brains; and the saccades are nothing but to convey parts of the retinal image from the center to the peripheries, and vice versa. Namely, the illusory snakes is generated by a spontaneous saccadic rivalry between the fovea & its corresponding conscious brain competing with the peripheral retina & its corresponding conscious brain. Similarly, peripheral drift illusion that requires peripheral vision to be perceived, may not be generated without the aforementioned saccadic rivalry; namely, we think that the perception of that illusion may not be occurred without spontaneous saccade away from the fixational peripheral visual space, see also reference 1 and 5. That saccade is mostly due to spatial attention which conveys the retinal image from the retinal peripheries (the fixational visual space) to the central retina (the attentional visual space). Namely, we think that without the aforementioned conveyance, the perceived illusion may not be generated because the aforementioned spatiotemporal discrepancies will be terminated. Importantly, we investigated the contribution of the human medial temporal complex in producing the illusory motion conscious perception with three different mechanisms: Cognitive control, deep breathing, and the arrangements of the patterns of the building blocks. The aforementioned processes are found to alter the visual perception of rotating snakes stimulus. Inclusively, we distinguished between two distinct visual awareness, namely, the central versus the peripheral vision and we show how active vision which requires cognitive control but not passive vision can ultimately control the perception of the rotating snakes stimulus, namely, alternation between real and illusory visual awareness!

Spatial Induction of Illusory Motion

Perception ◽  
1982 ◽  
Vol 11 (2) ◽  
pp. 187-199 ◽  
Author(s):  
Walter C Gogel ◽  
Bernard W Griffin
Keyword(s):  
Apparent Motion ◽  
Alternative Interpretation ◽  
Test Point ◽  
Illusory Motion ◽  
Frontoparallel Plane ◽  
Continuous Motion ◽  
Motion In Depth ◽  
Physical Motion ◽  
Induced Motion

Induced motion is not limited to continuous motions presented on a frontoparallel plane. Experiments were conducted to investigate several varieties of induced motion to which theories of induced motion must apply. The observer indicated the perceived path of motion of a vertically moving test point to which induced motion at right angles to the physical motion was added by the motion of two inducing points. In experiment 1 all motions (both apparently and physically) were in a frontoparallel plane. It was found that discrete displacement as well as continuous motion of the test and inducing points produced substantial amounts of induction. In experiment 2 the inducing points were continuously moved in stereoscopic distance rather than remaining in an apparent frontoparallel plane. A large amount of apparent motion in depth was found in the vertically moving test point and was interpreted as an induced motion in depth. In experiment 3 an alternative interpretation of the phenomenon of experiment 2, in terms of an apparent vergence for the two images of the test point, was investigated and found to be unlikely. In experiment 4, with all the points moving continuously in a frontoparallel plane, eye motions as well as induced motions were measured, with the observer fixating either the test point or an inducing point. Substantial amounts of induction were obtained under both conditions of fixation. The consequences of these findings for theories of induced motion are discussed.

Activation in the MT-complex during visual perception of apparent motion and temporal succession

2005 ◽  
Vol 43 (7) ◽  
pp. 1060-1071 ◽  
Author(s):  
Axel Larsen ◽  
Søren Kyllingsbæk ◽  
Ian Law ◽  
Claus Bundesen
Keyword(s):  
Visual Perception ◽  
Apparent Motion ◽  
Temporal Succession

Perception of apparent motion in depth: a high-density electrical mapping study in humans

2004 ◽  
Vol 354 (2) ◽  
pp. 115-118 ◽  
Author(s):  
Yuji Kobayashi ◽  
Aihide Yoshino ◽  
Masaru Kawamoto ◽  
Yoshitomo Takahashi ◽  
Soichiro Nomura
Keyword(s):  
Apparent Motion ◽  
High Density ◽  
Mapping Study ◽  
Motion In Depth ◽  
Electrical Mapping
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