Dynamic tilt illusion induced by continuous contextual orientation alternations

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چکیده

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Dynamic tilt illusion induced by continuous contextual orientation alternations.

In the classic tilt illusion, the perceived orientation of a center patch is shifted away from its oriented context. Additionally, a stronger illusion effect is yielded when the center patch is simultaneously rather than asynchronously presented with a constant context for a shorter duration. However, little is known about the temporal characteristic of the tilt illusion in a reverse situation ...

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Orientation processing mechanisms revealed by the plaid tilt illusion

The tilt after-effect (TAE) and tilt illusion (TI) have revealed a great deal about the nature of orientation coding of 1-dimensional (1D) lines and gratings. Comparatively little research however has addressed the mechanisms responsible for encoding the orientation of 2-dimensional (2D) plaid stimuli. A multi-stage model of edge detection has recently been proposed [Georgeson, M. A. (1998) Ima...

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Dissociable Processes for Orientation Discrimination Learning and Contextual Illusion Magnitude

Previous research suggests an inverse relationship between human orientation discrimination sensitivity and tilt illusion magnitude. To test whether these perceptual functions are inherently linked, we measured both orientation discrimination sensitivity and the magnitude of the tilt illusion before and after participants had been trained for three days on an orientation discrimination task. Di...

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Inter-ocular transfer of the tilt illusion shows that monocular orientation mechanisms are colour selective

A vertical grating appears tilted when surrounded by a tilted inducer grating: the tilt illusion. We investigated the inter-ocular transfer of the tilt illusion for gratings modulated along parallel or orthogonal vectors in a L-M and L+M+S cone contrast space. We found that the monocular component of the tilt illusion is entirely colour selective and the binocular component shows only weak colo...

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Perceptual organization in the tilt illusion.

The tilt illusion is a paradigmatic example of contextual influences on perception. We analyze it in terms of a neural population model for the perceptual organization of visual orientation. In turn, this is based on a well-found treatment of natural scene statistics, known as the Gaussian Scale Mixture model. This model is closely related to divisive gain control in neural processing and has b...

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ژورنال

عنوان ژورنال: Journal of Vision

سال: 2017

ISSN: 1534-7362

DOI: 10.1167/17.13.1