The visual perception of plane tilt from motion in small field and large field: psychophysics and theory.

abstract：:In two experiments we measured object recognition performance as a function of delay. In Experiment 1 we presented half of an image of an object, and then the other half after a variable delay. Objects were subdivided into top versus bottom halves, left versus right halves, or vertical strips. In Experiment 2 we separ...

journal_title：Vision research

authors： Servos P,Olds ES,Planetta PJ,Keith Humphrey G

更新日期：2005-06-01 00:00:00

abstract：:Radial frequency (RF) patterns, which are sinusoidal modulations of a radius in polar coordinates, are commonly used to study shape perception. Previous studies have argued that the detection of RF patterns is either achieved globally by a specialized global shape mechanism, or locally using as cue the maximum tangent...

journal_title：Vision research

authors： Schmidtmann G,Kingdom FAA

更新日期：2017-05-01 00:00:00

abstract：:In an attempt to uncover the properties of the psychophysical spatial mechanisms which optimally respond to the vernier offset between two abutting lines, we investigated the effects of one-dimensional band-limited spatial noise masks superimposed with the target, on vernier thresholds. Unidirectional vernier threshol...

journal_title：Vision research

authors： Waugh SJ,Levi DM,Carney T

更新日期：1993-08-01 00:00:00

abstract：:Thresholds for detecting the angle of rotation of vertical symmetrical patterns containing few or no explicit vertical or horizontal contours were found to be almost as low as those for an actual vertical line extending approximately the same range. This hyperacuity performance, which we refer to as implicit orientati...

journal_title：Vision research

authors： Li W,Westheimer G

更新日期：1997-03-01 00:00:00

abstract：:Saleh and Bonnet [Fechner Day 98, p. 344] have shown that, upon parafoveal stimulation and up to 6.5 c/deg, reaction time (RT) is a function of grating contrast multiplied by grating period. The present experiments extend these findings to foveal stimulation within a wider spatial-frequency (SF) range and to stimuli o...

journal_title：Vision research

authors： Vassilev A,Mihaylova M,Bonnet C

更新日期：2002-03-01 00:00:00

abstract：:From the earliest stages of sensory processing, neurons show inherent non-linearities: the response to a complex stimulus is not a sum of the responses to a set of constituent basis stimuli. These non-linearities come in a number of forms and have been explained in terms of a number of functional goals. The family of ...

journal_title：Vision research

authors： Golden JR,Vilankar KP,Wu MC,Field DJ

更新日期：2016-03-01 00:00:00

abstract：:We evaluated the level of intraocular light scatter in a group of patients with retinitis pigmentosa (RP) who had minimal or no lens opacities, since such patients not infrequently complain of photoaversion. Intraocular light scatter was measured in 20 patients with RP who were < 60 years of age and who had no more th...

journal_title：Vision research

authors： Alexander KR,Fishman GA,Derlacki DJ

更新日期：1996-11-01 00:00:00

abstract：:We investigated temporal aspects of stereoscopically perceived slant produced by the following transformations: horizontal scale, horizontal shear, vertical scale, vertical shear, divergence and rotation, between the half-images of a stereogram. Six subjects viewed large field stimuli (70 degrees diameter) both in the...

journal_title：Vision research

authors： van Ee R,Erkelens CJ

更新日期：1998-12-01 00:00:00

abstract：:A compelling impression of surface slant is produced by random dot displays depicting deformation and translation alone. A simple model of slant estimation based upon deformation is shown to capture quantitatively both the perceived slant in this situation and the distortion in perceived slant produced when constant d...

journal_title：Vision research

authors： Freeman TC,Harris MG,Meese TS

更新日期：1996-01-01 00:00:00

abstract：:Studies of spatial summation often use sinusoidal gratings with blurred edges. When the envelope is elongated (i) along the grating stripes and (ii) at right angles to the grating stripes, we refer to the stimuli as skunk-tails and tiger-tails respectively. Previous work [Polat & Tyler, 1999; Vision Research, 39, 887-...

journal_title：Vision research

authors： Meese TS,Hess RF

更新日期：2007-06-01 00:00:00

abstract：:An outline drawing often serves as an excellent depiction of a visual scene. Somehow, our visual system can form two- and three-dimensional percepts solely from one-dimensional contour information. In mathematics, contour closure plays a key role in bridging this dimensional gap, however in perception the link between...

journal_title：Vision research

authors： Elder J,Zucker S

更新日期：1993-05-01 00:00:00

abstract：:Feature-directed attention has been recently studied in various psychophysical, electrophysiological, and imaging studies. Convincing evidence has been obtained for its global effectiveness, but there is a debate about the processing fate of non-attended target features. A number of studies demonstrated feature-direct...

journal_title：Vision research

authors： Wegener D,Ehn F,Aurich MK,Galashan FO,Kreiter AK

更新日期：2008-12-01 00:00:00

abstract：:Visual information is an essential guide when interacting with moving objects, yet it can also be deceiving. For instance, motion can induce illusory position shifts, such that a moving ball can seem to have bounced past its true point of contact with the ground. Some evidence suggests illusory motion-induced position...

journal_title：Vision research

authors： Marinovic W,Plooy AM,Arnold DH

更新日期：2012-05-01 00:00:00

abstract：:The foveal region of the retina has a yellow pigmentation composed primarily of the carotenoids lutein and zeaxanthin. Past studies have shown that cigarette smoking depresses carotenoid concentrations in the blood. This is the first report on the effects of cigarette smoking on carotenoids in the retina. Macular pigm...

journal_title：Vision research

authors： Hammond BR Jr,Wooten BR,Snodderly DM

更新日期：1996-09-01 00:00:00

abstract：:A computational model is proposed to account for the adaptive properties of the fly motion system. The response properties of motion-sensitive neurons in the fly are modelled using an underdamped adaptive scheme to adjust the time constants of delay filters in an array of Reichardt detectors. It is shown that the incr...

journal_title：Vision research

authors： Clifford CW,Langley K

更新日期：1996-08-01 00:00:00

abstract：:Diabetic retinopathy (DR) is the progressive degeneration of retinal blood vessels and neurons. Inflammation is known to play an important role in the pathogenesis of DR. During diabetes, metabolic disorder leads to the release of damage-associated molecular patterns (DAMPs) both in the retina and elsewhere in the bod...

journal_title：Vision research

authors： Xu H,Chen M

更新日期：2017-10-01 00:00:00

abstract：:Although the blind spot encodes no visual information, one never perceives an odd blob or blank there, but sees a complete scene of the world even when viewing monocularly. This phenomenon called "filling-in" might be related to mechanisms essential to surface perception, but the neural representation has still been u...

journal_title：Vision research

authors： Murakami I

更新日期：1995-04-01 00:00:00

abstract：:The red-green (RG) detection mechanism was revealed by measuring threshold detection contours in the L and M cone contrast plane for sine-wave test gratings of 0.8-6 c deg-1 on bright adapting fields of yellow or red. The slope of the RG detection contours was unity, indicating that the L and M contrast signals contri...

journal_title：Vision research

authors： Stromeyer CF 3rd,Gowdy PD,Chaparro A,Kronauer RE

更新日期：1999-09-01 00:00:00

abstract：:If we look out of the window of a travelling train our eyes move rapidly back and forth (saccadic movement). With no attention to individual objects, gaze velocity is low but nystagmic frequency is high (stare nystagmus). If we are interested in individual objects, the angular velocity of gaze is high and the nystagmi...

journal_title：Vision research

authors： von Campenhausen M,Kirschfeld K

更新日期：1999-04-01 00:00:00

abstract：:Detection and discrimination of compound grating stimuli were examined in foveal and peripheral vision. At the fovea, stimuli containing two components (spatial frequencies F and 3F) can be discriminated on the basis of their relative spatial phase when the 3F component is at a contrast below its independent detection...

journal_title：Vision research

authors： Stephenson CM,Knapp AJ,Braddick OJ

更新日期：1991-01-01 00:00:00

abstract：:What you see depends not only on where you are looking but also on where you will look next. The pre-saccadic attention shift is an automatic enhancement of visual sensitivity at the target of the next saccade. We investigated whether and how perceptual factors independent of the oculomotor plan modulate pre-saccadic ...

journal_title：Vision research

authors： White AL,Rolfs M,Carrasco M

更新日期：2013-06-07 00:00:00

abstract：:The influence of binocular disparate targets on the perceived visual direction of adjacent monocular targets has been termed "binocular capture". The magnitude of capture increases significantly with increasing vertical separation between monocular targets. This study sets out to elucidate the interaction between spat...

journal_title：Vision research

authors： Raghunandan A

更新日期：2011-12-08 00:00:00

abstract：:The visual system can represent a partially occluded 3-D surface from images of separated surface segments. The underlying amodal surface integration process accomplishes this by amodally extending each surface segment behind the occluder (amodal surface extension) and integrating the extended surfaces to form a whole...

journal_title：Vision research

authors： He ZJ,Ooi TL,Su YR

更新日期：2018-02-01 00:00:00

abstract：:What are the visual causes, rather than mere correlates, of attentional selection and how do they compare to each other during natural vision? To address these questions, we first strung together semantically unrelated dynamic scenes into MTV-style video clips, and performed eye tracking experiments with human observe...

journal_title：Vision research

authors： Carmi R,Itti L

更新日期：2006-12-01 00:00:00

abstract：:Quantitative Southern blotting and PCR/RFLP analysis were used to determine the number and ratio of long-wave-sensitive (L-) and mid-wave-sensitive (M-) opsin genes in 25 colour-normal caucasian males. The average observed ratio was 1:2.8 +/- 1.2 for Southern blot analysis and 1:3.0 +/- 1.7 for PCR/RFLP analysis. Thus...

journal_title：Vision research

authors： Wolf S,Sharpe LT,Knau H,Wissinger B

更新日期：1998-11-01 00:00:00

abstract：:Random-dot cinematograms comprising many different, spatially intermingled local motion vectors can produce a percept of global coherent motion in a single direction. Thresholds for discriminating the direction of global motion were measured under various conditions. Discrimination thresholds increased with the width ...

journal_title：Vision research

authors： Watamaniuk SN,Sekuler R

更新日期：1992-12-01 00:00:00

abstract：:The purpose of this study was to investigate the effect of dot speed and dot density on the development of global motion perception by comparing the performance of adults and children (5-6years old) on a direction-discrimination task. Motion coherence thresholds were measured at two dot speeds (1 and 4deg/s) and three...

journal_title：Vision research

authors： Narasimhan S,Giaschi D

更新日期：2012-06-01 00:00:00

abstract：:Over the past few years, the very act of playing action video games has been shown to enhance several different aspects of visual selective attention, yet little is known about the neural mechanisms that mediate such attentional benefits. A review of the aspects of attention enhanced in action game players suggests th...

journal_title：Vision research

authors： Bavelier D,Achtman RL,Mani M,Föcker J

更新日期：2012-05-15 00:00:00

abstract：:The spectral sensitivity of the extracellularly-recorded photoresponse of isolated rods of the tiger salamander, Ambystoma tigrinum, was compared to the absorptance spectrum. Both measurements were made with the same optical system on the same portion of each cell to avoid errors that could occur when the two kinds of...

journal_title：Vision research

authors： Cornwall MC,MacNichol EF Jr,Fein A

更新日期：1984-01-01 00:00:00

abstract：:The squirrel monkey lacks anatomically demonstrable ocular dominance columns, and physiologically it has an ocular dominance distribution in V1 that is very different from that of macaques, with far fewer cells that strongly favor one eye over the other. We tested an alert squirrel monkey for physiological responses t...

journal_title：Vision research

authors： Livingstone MS,Nori S,Freeman DC,Hubel DH

更新日期：1995-02-01 00:00:00