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Foveal

About: Foveal is a research topic. Over the lifetime, 2652 publications have been published within this topic receiving 94120 citations.


Papers
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Journal ArticleDOI
TL;DR: The methodology was evaluated on 1200 fundus images from the publicly available MESSIDOR database, 660 of which present signs of diabetic retinopathy, and results outperform all the reviewed methodologies available in literature.

68 citations

BookDOI
18 Aug 2011
TL;DR: Parafoveal-on-foveal effects refer to the possibility that processing of the parafovea word can influence the fixation durations on the foveal word during reading as mentioned in this paper.
Abstract: Parafoveal-on-foveal effects refer to the possibility that processing of the parafoveal word can influence the fixation durations on the foveal word during reading. In this Chapter, I will review the literature of studies examining this issue. Effects observed in reading-like tasks have been questioned on methodological grounds with regards to the generalisibility to normal reading. The clearest evidence for the existence of parafoveal-on-foveal effects comes from experiments allowing tight control over the stimuli but restricting the observations to fixation locations very close to the parafoveal word, and from corpus studies showing reliable but numerically small effects. I will make the claim that with regards to taking reported parafoveal-on-foveal effects as evidence for parallel lexical processing, the jury is still out. The argument is that as long as parafoveal-on-foveal effects are numerically small and difficult to replicate in a controlled experiment, they can be explained on the basis of mislocated fixations, machine error and binocular disparity. These latter three influences can create apparent parafoveal-on-foveal effects without being linked to parallel lexical processing.

68 citations

Journal ArticleDOI
TL;DR: It is demonstrated that monkeys, like man, are capable of predictive eye tracking and it is inferred that monkeys have better parafoveal visual acuity.

67 citations

Journal ArticleDOI
TL;DR: Findings illustrate that peripheral and foveal processing are closely connected, mastering the compromise between a large peripheral visual field and high resolution at the fovea.
Abstract: Visual processing varies dramatically across the visual field. These differences start in the retina and continue all the way to the visual cortex. Despite these differences in processing, the perceptual experience of humans is remarkably stable and continuous across the visual field. Research in the last decade has shown that processing in peripheral and foveal vision is not independent, but is more directly connected than previously thought. We address three core questions on how peripheral and foveal vision interact, and review recent findings on potentially related phenomena that could provide answers to these questions. First, how is the processing of peripheral and foveal signals related during fixation? Peripheral signals seem to be processed in foveal retinotopic areas to facilitate peripheral object recognition, and foveal information seems to be extrapolated toward the periphery to generate a homogeneous representation of the environment. Second, how are peripheral and foveal signals re-calibrated? Transsaccadic changes in object features lead to a reduction in the discrepancy between peripheral and foveal appearance. Third, how is peripheral and foveal information stitched together across saccades? Peripheral and foveal signals are integrated across saccadic eye movements to average percepts and to reduce uncertainty. Together, these findings illustrate that peripheral and foveal processing are closely connected, mastering the compromise between a large peripheral visual field and high resolution at the fovea.

67 citations

Journal ArticleDOI
TL;DR: Two-dimensional eye movements were recorded by a contact-lens optical lever while two experienced subjects attempted to maintain fixation at thecenter of a 1°.3-diam disk, at the center of two- and four-disk arrays separated by 10°.
Abstract: Two-dimensional eye movements were recorded by a contact-lens optical lever while two experienced subjects attempted to maintain fixation at the center of a 1°.3-diam disk, at the center of two- and four-disk arrays separated by 10°.0 to 29°.5, or to maintain the same eye position after the disk was removed from view. Fixation stability was better with the foveal disk than when the target was presented in the near periphery. Fixation stability deteriorated slowly as target separation increased, but fixation stability with the most peripheral target was better than that with no target at all. This deterioration of fixation stability was associated with increases of the size of both saccades and intersaccadic drifts, but the frequency of saccades was not influenced systematically.

67 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023144
2022385
202195
2020119
2019108
201883