Showing papers on "Foveal published in 1968"
TL;DR: Results indicate that perceived orientation of oblique lines is closer to the horizontal or vertical than is geometrical slant, the difference being of the order of 5 °, and what type of information is actually used in the visual system to arrive at “orientation” is investigated.
118 citations
TL;DR: Several lines of evidence indicate that the VER provides a valid objective index of foveal function and excellent agreement between the VER and subjective thresholds in studies of the area-intensity relation, Stiles-Crawford effect and spectral sensitivity.
100 citations
TL;DR: Gaze displacements and fixations were recorded by a vectorial method in normal subjects during the free search of a simple (P1) and a complex (P2) visual pattern.
66 citations
TL;DR: An absence of bilateral superposition of the binocular fields, wither direct or postsynaptically, was noted at the tectal level, in spite of occasionally observed binocular fixation movements of the eyes, which probably makes possible an independent functioning of monocular fixation mechanisms in these predatory teleosts.
49 citations
TL;DR: Two experiments imply a reflexive guidance system that comes into play when the fixation target is feeble: this system is maladaptive: it guides faint targets to a retinal region where they can not be seen.
19 citations
TL;DR: The foveal pit shows light sensitivity different from that of the surrounding part of the fovea—the depressed area of the retina at the back of the eye.
Abstract: The foveal pit shows light sensitivity different from that of the surrounding part of the fovea—the depressed area of the retina at the back of the eye. Photochemistry may be involved in this difference.
11 citations
TL;DR: In this paper, the termination of brief dim flashes confined to the human fovea was more pronounced than the initiation of the flashes, and this was true for both red light and for blue.
Abstract: Responses to the termination of brief dim flashes confined to the human fovea are shown to be more pronounced than to the initiation of the flashes. This was true for both red light and for blue.
6 citations
2 citations
TL;DR: Using a method in which the S adjusted the distance of a comparison stimulus of fixed size, the size changes of projected afterimages (AIs) were tracked during fading, with foveal Als fading more rapidly and contracting to a greater extent.
Abstract: Using a method in which the S adjusted the distance of a comparison stimulus of fixed size, the size changes of projected afterimages (AIs) were tracked during fading. Foveal Als and extrafoveal Als were found to contract slightly over time, with the foveal Als fading more rapidly and contracting to a greater extent.
1 citations