Results 201 to 210 of about 41,472 (242)

Contour integration and cortical processing

Journal of Physiology (Paris), 2003
Our understanding of visual processing in general, and contour integration in particular, has undergone great change over the last 10 years. There is now an accumulation of psychophysical and neurophysiological evidence that the outputs of cells with conjoint orientation preference and spatial position are integrated in the process of explication of ...
R F Hess, Anthony Hayes, David J Field
exaly   +3 more sources

A Technique in Contour Integration

The American Mathematical Monthly, 2014
A rotation of an integration contour is shown to lead, in some cases, to interesting integral identities. Elementary and non-elementary examples are provided. 1. INTRODUCTION. An application of contour integration presented here, while nearly trivial in conception and implementation, and capable of extensive generaliza- tion, does not appear in ...
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Contour integration in amblyopic monkeys

Visual Neuroscience, 2003
Amblyopia is characterized by losses in a variety of aspects of spatial vision, such as acuity and contrast sensitivity. Our goal was to learn whether those basic spatial deficits lead to impaired global perceptual processing in strabismic and anisometropic amblyopia. This question is unresolved by the current human psychophysical literature.
Petra, Kozma, Lynne, Kiorpes
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Collinear interactions and contour integration

Spatial Vision, 2000
The visibility of a local target is influenced by the global configuration of the stimulus. Collinear configurations are a specific case in which facilitation or suppression of the target has been found to be dependent on the contrast threshold of the target.
U, Polat, Y, Bonneh
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Generalization of the eigenvalues by contour integrals

Applied Mathematics and Computation, 2007
The authors starts with the remark that two solutions of the differential equation \[ y''+\{\lambda +n(n+1)\text{sech}^2(x)\}y(x,\lambda)=0 \] where \(\lambda=-s^2\) is a spectral parameter, \(n\) a positive integer, can be given explicitly by contour integrals \[ y_1=\text{cosh}^{n+1}x\int_C\text{cosh}(sz)(\text{sinh}z-\text{sinh}x)^{-n-1}\,dz \] and \
Tanfer Tanriverdi, John Bryce McLeod
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Integration of contours: new insights

Trends in Cognitive Sciences, 1999
Psychophysical, neurophysiological and anatomical research of the last few years has converged on a new explanation of how the components of a contour become integrated. Borrowing from the Gestalt rules of good continuation, this research suggests that components of a curved contour become integrated when the alignment follows specific rules.
, Hess, , Field
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Contour integration: an integral evaluated

International Journal of Mathematical Education in Science and Technology, 1988
In this paper a simple integral is considered which does not appear in standard lists of integrals. A substitution is given which allows the integral to be evaluated. It is then shown how the integral may be formally evaluated by appealing to complex variable theory.
A. Sackfield, D.A. Hills
openaire   +1 more source