The Experts below are selected from a list of 4641 Experts worldwide ranked by ideXlab platform
Wolf Singer - One of the best experts on this subject based on the ideXlab platform.
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the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
European Journal of Neuroscience, 1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections.
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short commun cation the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:Abstract An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections. Figure 1 illustrates that our visual system has the tendency to group contour segments that share the same orientation, especially if these are colinear (Field
Kerstin E Schmidt - One of the best experts on this subject based on the ideXlab platform.
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the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
European Journal of Neuroscience, 1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections.
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short commun cation the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:Abstract An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections. Figure 1 illustrates that our visual system has the tendency to group contour segments that share the same orientation, especially if these are colinear (Field
Phillip E Sheridan - One of the best experts on this subject based on the ideXlab platform.
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a method to perform a fast fourier transform with primitive image transformations
IEEE Transactions on Image Processing, 2007Co-Authors: Phillip E SheridanAbstract:The Fourier transform is one of the most important transformations in image processing. A major component of this influence comes from the ability to implement it efficiently on a digital computer. This paper describes a new methodology to perform a fast Fourier transform (FFT). This methodology emerges from considerations of the natural physical constraints imposed by image capture devices (camera/eye). The novel aspects of the specific FFT method described include: 1) a bit-wise reversal re-Grouping Operation of the conventional FFT is replaced by the use of lossless image rotation and scaling and 2) the usual arithmetic Operations of complex multiplication are replaced with integer addition. The significance of the FFT presented in this paper is introduced by extending a discrete and finite image algebra, named Spiral Honeycomb Image Algebra (SHIA), to a continuous version, named SHIAC
Siegrid Lowel - One of the best experts on this subject based on the ideXlab platform.
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the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
European Journal of Neuroscience, 1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections.
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short commun cation the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:Abstract An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections. Figure 1 illustrates that our visual system has the tendency to group contour segments that share the same orientation, especially if these are colinear (Field
Rainer Goebel - One of the best experts on this subject based on the ideXlab platform.
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the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
European Journal of Neuroscience, 1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections.
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short commun cation the perceptual Grouping criterion of colinearity is reflected by anisotropies of connections in the primary visual cortex
1997Co-Authors: Kerstin E Schmidt, Rainer Goebel, Siegrid Lowel, Wolf SingerAbstract:Abstract An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These Grouping Operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual Grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual Grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this Grouping Operation are determined by the architecture of the tangential connections. Figure 1 illustrates that our visual system has the tendency to group contour segments that share the same orientation, especially if these are colinear (Field
