scholarly journals Retinal Peripheries Generate Illusory Motion Reversals

2019 ◽  
Author(s):  
Ahmad Yousef
Keyword(s):  
Illusory Motion ◽  
Restricted Access ◽  
Light Rays ◽  
Pupil Constriction ◽  
Motion Reversal

This article provides evidence that the retinal peripheries generate motion reversal perception. Restricted access of the light rays to retinal peripheries due to pupil constriction is found to significantly limit the perception of motion reversal. We used unfolded stimulus, namely, a linear stimulus instead one a radial one to easily validate our theory.

scholarly journals Motion Induced Colours Fusion

2019 ◽  
Author(s):  
Ahmad Yousef
Keyword(s):  
Opposite Direction ◽  
Illusory Motion ◽  
Physical Motion ◽  
Optimal Fusion ◽  
Motion Reversal

This article provides evidence that motion has the ability to stably fuse two different colored ‘spatially separated’ stimuli without impairments against the shape of those separated stimuli. Based on our observations, dilated pupils promote colours fusion; and the optimal fusion happens when the stimuli are moving in opposite direction of the actual physical motion, namely, when there is illusory motion reversal. The previous observations suggested that retinal peripheries have main contributions on the present illusion which we called; motion induced colours fusion ‘MICF’ illusion.

Illusory motion reversal in tune with motion detectors

2005 ◽  
Vol 9 (12) ◽  
pp. 559-560 ◽  
Author(s):  
Alex O. Holcombe ◽  
Colin W.G. Clifford ◽  
David M. Eagleman ◽  
Pooya Pakarian
Keyword(s):  
Illusory Motion ◽  
Motion Detectors ◽  
Motion Reversal

scholarly journals Illusory motion reversal is caused by rivalry, not by perceptual snapshots of the visual field

2004 ◽  
Vol 44 (23) ◽  
pp. 2653-2658 ◽  
Author(s):  
Keith Kline ◽  
Alex O. Holcombe ◽  
David M. Eagleman
Keyword(s):  
Visual Field ◽  
Illusory Motion ◽  
Motion Reversal

scholarly journals Illusory motion reversal does not imply discrete processing: Reply to Rojas et al.

2006 ◽  
Vol 46 (6-7) ◽  
pp. 1158-1159 ◽  
Author(s):  
K.A. Kline ◽  
A.O. Holcombe ◽  
D.M. Eagleman
Keyword(s):  
Illusory Motion ◽  
Discrete Processing ◽  
Motion Reversal

scholarly journals Illusory Motion Reversal in Touch

2019 ◽  
Vol 13 ◽  
Author(s):  
Yu-Chun Hsu ◽  
Chun-I Yeh ◽  
Jian-Jia Huang ◽  
Chang-Hung Hung ◽  
Chou Po Hung ◽  
...  
Keyword(s):  
Illusory Motion ◽  
Motion Reversal

scholarly journals Evidence against the temporal subsampling account of illusory motion reversal

2008 ◽  
Vol 8 (4) ◽  
pp. 13 ◽  
Author(s):  
Keith A. Kline ◽  
David M. Eagleman
Keyword(s):  
Illusory Motion ◽  
Motion Reversal

Full-parallax 3D display using time-multiplexing projection technology

2020 ◽  
Vol 2020 (2) ◽  
pp. 100-1-100-6
Author(s):  
Takuya Omura ◽  
Hayato Watanabe ◽  
Naoto Okaichi ◽  
Hisayuki Sasaki ◽  
Masahiro Kawakita
Keyword(s):  
Incident Light ◽  
Polarization State ◽  
3D Image ◽  
3D Display ◽  
Time Division Multiplexing ◽  
3D Images ◽  
Polarization Gratings ◽  
Light Rays ◽  
Time Division

We enhanced the resolution characteristics of a threedimensional (3D) image using time-division multiplexing methods in a full-parallax multi-view 3D display. A time-division light-ray shifting (TDLS) method is proposed that uses two polarization gratings (PGs). As PG changes the diffraction direction of light rays according to the polarization state of the incident light, this method can shift light rays approximately 7 mm in a diagonal direction by switching the polarization state of incident light and adjusting the distance between the PGs. We verified the effect on the characteristics of 3D images based on the extent of the shift. As a result, the resolution of a 3D image with depth is improved by shifting half a pitch of a multi-view image using the TDLS method, and the resolution of the image displayed near the screen is improved by shifting half a pixel of each viewpoint image with a wobbling method. These methods can easily enhance 3D characteristics with a small number of projectors.

Types of refractive errors and methods for their diagnosis

2020 ◽  
pp. 30-36
Author(s):  
Olga Lemzyakova
Keyword(s):  
Optical System ◽  
Contact Lenses ◽  
Vision Impairment ◽  
Refractive Errors ◽  
Vision Correction ◽  
Light Rays ◽  
Different Types ◽  
Almost All ◽  
Degrees Of Severity ◽  
The Brain

Refraction of the eye means its ability to bend (refract) light in its own optical system. In a normal state, which is called emmetropia, light rays passing through the optical system of the eye focus on the retina, from where the impulse is transmitted to the visual cortex of the brain and is analyzed there. A person sees equally well both in the distance and near in this situation. However, very often, refractive errors develop as a result of various types of influences. Myopia, or short-sightedness, occurs when the light rays are focused in front of the retina as a result of passing through the optical system of the eye. In this case, a person will clearly distinguish close objects and have difficulties in seeing distant objects. On the opposite side is development of farsightedness (hypermetropia), in which the focusing of light rays occurs behind the retina — such a person sees distant objects clearly, but outlines of closer objects are out of focus. Near vision impairment in old age is a natural process called presbyopia, it develops due to the lens thickening. Both myopia and hypermetropia can have different degrees of severity. The variant, when different refractive errors are observed in different eyes, is called anisometropia. In the same case, if different types of refraction are observed in the same eye, it is astigmatism, and most often it is a congenital pathology. Almost all of the above mentioned refractive errors require correction with spectacles or use of contact lenses. Recently, people are increasingly resorting to the methods of surgical vision correction.

Preparation and application of internal surface reversed-phase restricted-access material

2013 ◽  
Vol 30 (8) ◽  
pp. 810-815 ◽  
Author(s):  
Xiaoyu WU ◽  
Rong WANG ◽  
Hua XIE ◽  
Jianfeng WANG ◽  
Pei YANG ◽  
...  
Keyword(s):  
Internal Surface ◽  
Reversed Phase ◽  
Restricted Access ◽  
Restricted Access Material
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