Binocular Vision and Stereopsis (Oxford Psychology Series) by Ian P. Howard

By Ian P. Howard

This ebook is a survey of data approximately binocular imaginative and prescient, with an emphasis on its function within the notion of a 3-dimensional global. the first curiosity is organic imaginative and prescient. In every one bankruptcy, physiological, behavioral, and computational methods are reviewed in a few aspect, mentioned, and interrelated. The authors describe experiments required to respond to particular questions and relates them to new terminologies and present theoretical schemes.

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The visual pathways. Axons from the right half of each eye (left visual hemifield) project to the right occipital lobe and those from the left half of each eye (right visual hemifield) project to the left occipital lobe. 34 THE HOROPTER vertebrates decussate fully, so that full decussation must be the primitive condition. Ramon y Cajal (1911) proposed that full decussation evolved to preserve the spatial integrity of the central neural map of the images from the two eyes. 3a. 3b. The spatial integrity of the internal map is not important as such, since spatial location is coded in terms of fibre connections and patterns of firing, not in terms of spatial maps.

1, or in terms of corresponding retinal points. Corresponding retinal points have the same positions on two idealized spherical retinas that are superimposed. Imagine two identical eyes, each with a fovea and a horizontal meridian. The congruence of the nodal points, fovea, and horizontal meridians brings all other pairs of geometrically defined corresponding points into congruence. 4 illustrates the geometrical definition of disparity. The visual axes converge on point F and a second point P is placed some distance beyond F.

34 THE HOROPTER vertebrates decussate fully, so that full decussation must be the primitive condition. Ramon y Cajal (1911) proposed that full decussation evolved to preserve the spatial integrity of the central neural map of the images from the two eyes. 3a. 3b. The spatial integrity of the internal map is not important as such, since spatial location is coded in terms of fibre connections and patterns of firing, not in terms of spatial maps. However, transcallosal fibres connect spatially adjacent regions on either side of the midline so that visual stimuli in the midline region can be processed.

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