Behavioral evidence suggests that the processing of parafoveal stimuli decreases as the perceptual demands of a task at fixation increase. However, it remains unclear whether or not this effect of perceptual load occurs during initial sensory-level processing at early stages of visuocortical analysis. Using event-related potential measures, we found that increasing the perceptual load of foveal...

Ambient Occlusion is a method of creating shades on the scene, due to occlusion. It is a good looking approximation of the light radiation, however it is very expensive method. It needs a large number of samples to get fair effects. In this article we propose a speed increase of the AO rendering, by using the eye tracker. Human cannot see high frequency details in parafoveal, and we can render ...

Objective: To assess polycythaemia vera (PV)-related retinal microvascular morphological changes using optical coherence tomography angiography (OCTA). Material and Methods: In this cross-sectional case-control study, 30 PV patients (Group 1) healthy individuals 2) underwent a comprehensive ophthalmological examination, followed by OCTA acquisition in Angio Retina mode (6x6 mm). Macular superfi...

Abstract In spite of the reduced visual acuity, parafoveal information plays an important role in natural reading. However, competing models on reading disagree whether words are previewed parafoveally at lexical level. We find neural evidence for processing by combining a rapid invisible frequency tagging (RIFT) approach with magnetoencephalography (MEG) and eye-tracking. silent task, target t...

BACKGROUND Anatomically, the right common iliac artery crosses the left iliac vein and its accompanying lymphatics. We hypothesized that this situation could lead to a predominance of edema, telangiectasis, and venous varicosities on the left lower extremities of older persons. METHODS To test this hypothesis, a research assistant who was blinded to the study goals examined 215 predominantly ...