One spatial filter limits speed of detecting low and middle frequency gratings.

abstract：:Steady-state pupil diameter was measured in darkness and over a 9 log unit range of Ganzfeld illumination in 20 normal adults, 28 normal infants, 59 adults with retinitis pigmentosa, and 30 children at risk for retinitis pigmentosa. Pupil threshold was defined as the retinal illuminance necessary to decrease pupil dia...

journal_title：Vision research

authors： Birch EE,Birch DG

更新日期：1987-01-01 00:00:00

abstract：:Vestibulo-ocular reflex (VOR)-optokinetic reflex (OKR) interaction was studied in normal human subjects during active sine-like head movements in the horizontal plane for a variety of vestibular-optokinetic stimulus combinations (frequency range, 0.05-1.6 Hz). At low to mid frequencies (< 0.2 Hz) the eyes tended to be...

journal_title：Vision research

authors： Schweigart G,Mergner T,Evdokimidis I,Morand S,Becker W

更新日期：1997-06-01 00:00:00

abstract：:We argue against recent claims by Erkelens and van Ee (Vision Res., in press) and by Erkelens (Vision Res. 40 (2000) 2411) that "the concept of the cyclopean eye is em leader always irrelevant as far as vision is concerned" (p. 1157) [corrected] and that "perceived direction during monocular viewing is based on the si...

journal_title：Vision research

authors： Ono H,Mapp AP,Howard IP

更新日期：2002-05-01 00:00:00

abstract：:This paper describes evidence for spatial aliasing in human motion perception. For a certain range of spatial frequencies, interference fringes drifting across the extrafoveal retina resemble two-dimensional spatial noise drifting in the opposite direction. For retinal locations within 10 deg of the fovea, the perceiv...

journal_title：Vision research

authors： Coletta NJ,Williams DR,Tiana CL

更新日期：1990-01-01 00:00:00

abstract：:Thresholds for detecting brief, white, foveal test flashes drop abruptly within 0.2 sec of the offset of a white adapting field. The magnitude of the abrupt drop is proportional to the square root of field intensity (square root of I) correct for bleaching and dark light. Thresholds are then stable out to 1.6 sec for ...

journal_title：Vision research

authors： Reeves A,Wu S,Schirillo J

更新日期：1998-03-01 00:00:00

abstract：:Psychophysical studies of interactions between contours defined by different image attributes report that luminance-defined and illusory contours show little if any interaction. Because the contours defined by these attributes may vary in perceptual saliency, we employed the tilt aftereffect (TAE) and a cross-adaptati...

journal_title：Vision research

authors： Berkley MA,Debruyn B,Orban G

更新日期：1994-01-01 00:00:00

abstract：:Texture information about surface shape can be decomposed into three constituents: compression, density and scaling. Blake, Bülthoff and Sheinberg's (1993, Vision Research, 33, 1723-1737) Ideal Observer theory of slant from texture predicts that the relative contribution of compression and density to the percept of pl...

journal_title：Vision research

authors： Buckley D,Frisby JP,Blake A

更新日期：1996-04-01 00:00:00

abstract：:With strict fixation, a small uniform target of medium contrast, placed at 10 deg eccentricity, faded much faster when presented on a dynamic random noise background than on either a static random noise background or a uniform background of the same luminance. Time to first disappearance was between 10 and 16 sec when...

journal_title：Vision research

authors： Spillmann L,Kurtenbach A

更新日期：1992-10-01 00:00:00

abstract：:We measured the pupillary light reflex (PLR) in 5 pigmented, Long Evans rats (under urethan sedation) in three conditions: direct stimulation, consensual stimulation, and a control condition designed to measure the effects of stray light. The average constriction (maximal amplitude) produced by a ganzfeld stimulus del...

journal_title：Vision research

authors： Trejo LJ,Rand MN,Cicerone CM

更新日期：1989-01-01 00:00:00

abstract：:In the past 20 years, there has been a great advancement in knowledge pertaining to compliance with amblyopia treatments. The occlusion dose monitor introduced quantitative monitoring methods in patching, which sparked our initial understanding of the dose-response relationship for patching amblyopia treatment. This r...

journal_title：Vision research

authors： Wang J

更新日期：2015-09-01 00:00:00

abstract：:Blakeslee and McCourt ((1997) Vision Research, 37, 2849-2869) demonstrated that a multiscale array of two-dimensional difference-of-Gaussian (DOG) filters provided a simple but powerful model for explaining a number of seemingly complex features of grating induction (GI), while simultaneously encompassing salient feat...

journal_title：Vision research

authors： Blakeslee B,McCourt ME

更新日期：1999-10-01 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：:Non-Fourier motion is now commonplace in research on visual motion perception, yet lacks a computational framework. This paper examines this issue based on the observation that many non-Fourier motion stimuli have a simple characterization in the frequency domain, in terms of oriented power distributions that lie alon...

journal_title：Vision research

authors： Fleet DJ,Langley K

更新日期：1994-11-01 00:00:00

abstract：:When our eyes are tracking a target that is moving in front of a structured background, global motion of equal speed is induced in the opposite direction. This effect has been termed reafference, which, astonishingly, does not significantly affect the execution of such pursuit eye movements. Employing brief and unexpe...

journal_title：Vision research

authors： Lindner A,Schwarz U,Ilg UJ

更新日期：2001-06-01 00:00:00

abstract：:In Experiment 1 we investigated the independent and combined effects of horizontal OKN of stationary edges and occlusion of the central retina. For a display 60 degrees wide moving at 30 degrees/sec a symmetrically placed pair of vertical nonoccluding bars suppressed OKN when near the center of the display but had no ...

journal_title：Vision research

authors： Murasugi CM,Howard IP,Ohmi M

更新日期：1986-01-01 00:00:00

abstract：:In this paper we use a dynamic noise-masking paradigm to explore the nature of the mechanisms mediating the motion perception of drifting isoluminant red-green gratings. We compare contrast thresholds for the detection and direction discrimination of drifting gratings (1.5 cpd), over a range of temporal frequencies (0...

journal_title：Vision research

authors： Mullen KT,Yoshizawa T,Baker CL Jr

更新日期：2003-05-01 00:00:00

abstract：:The grasshopper Phlaeoba sp. has ocular filters that are arranged in discrete retinal bands. These filters modify the spectra of some of its photoreceptors, all of which are apparently filled with the same resident photopigment. The receptor response differences produced by the ocular filters provide a potential basis...

journal_title：Vision research

authors： Wasserman GS,Kong KL

更新日期：1982-01-01 00:00:00

abstract：:This study investigated whether low-level attentional processes as indicated by saccade trajectories are modulated by higher-order factors as indicated by participants' cultural background. We hypothesized that if the East Asian participants engage in context-dependent attentional processing to a greater extent than t...

journal_title：Vision research

authors： Petrova K,Wentura D,Fu X

更新日期：2013-05-24 00:00:00

abstract：:Three experiments were performed to examine positional acuity and the role of spatial sampling in central, peripheral and amblyopic vision. In the first experiment, 3-line bisection acuity was compared to grating acuity. In normal foveal vision bisection acuity represents a hyperacuity. In anisometropic amblyopes, bis...

journal_title：Vision research

authors： Levi DM,Klein SA,Yap YL

更新日期：1987-01-01 00:00:00

abstract：:We report here measurements of visual evoked potential (VEP) activity after induction of afterimages in human observers. Drifting gratings normally produce no measurable phase synchronized VEP. However, after an afterimage of a high contrast grating of the same orientation and spatial frequency of that of the drifting...

journal_title：Vision research

authors： Burr DC,Fiorentini A,Morrone MC

更新日期：1987-01-01 00:00:00

abstract：:This investigation examined the onset response of the transient visually evoked potential elicited by the appearance-disappearance of sine-wave gratings at various levels of spatial frequency, suprathreshold contrast, and stimulus duration. The response was most easily characterized by two negative-positive complexes ...

journal_title：Vision research

authors： Reed JL,Marx MS,May JG

更新日期：1984-01-01 00:00:00

abstract：:Two experiments investigated modulatory effects of a surround upon the perceived speed of a moving central region. Both the surround's depth and velocity (relative to the center) were manipulated. The abilities of younger observers (mean age was 23.1 years) were evaluated in Experiment 1, while Experiment 2 was devote...

journal_title：Vision research

authors： Norman JF,Burton CL,Best LA

更新日期：2010-01-01 00:00:00

abstract：:Contrast modulation affords independent control of static contrast (C) and changes in contrast (delta C). We found that in anesthetized, paralyzed cats, the visual evoked potential (VEP) was dependent only on magnitude of delta C at each pattern transition, and was independent of the starting or ending contrast level....

journal_title：Vision research

authors： Pang XD,Bonds AB

更新日期：1991-01-01 00:00:00

abstract：:The widespread nature of diabetes affects all organ systems of an individual including the bone marrow. Long-term damage to the cellular and extracellular components of the bone marrow leads to a rapid decline in the bone marrow-hematopoietic stem/progenitor cells (HS/PCs) compartment. This review will highlight the i...

journal_title：Vision research

authors： Bhatwadekar AD,Duan Y,Korah M,Thinschmidt JS,Hu P,Leley SP,Caballero S,Shaw L,Busik J,Grant MB

更新日期：2017-10-01 00:00:00

abstract：:Bubbles is a classification image technique that randomly samples visual information from input stimuli to derive the diagnostic features that observers use in visual categorization tasks. To reach statistical significance, Bubbles performs an exhaustive and repetitive search in the stimulus space. To reduce the searc...

journal_title：Vision research

authors： Wang HF,Friel N,Gosselin F,Schyns PG

更新日期：2011-06-21 00:00:00

abstract：:The purpose of this study was to demonstrate the effect of human magnocellular (M)-pathway disruption on global motion perception. Coherence thresholds for global motion direction discrimination in random dot patterns were determined at slow and moderate dot speeds: (1) after adaptation to full-field sinusoidal flicke...

journal_title：Vision research

authors： Chapman C,Hoag R,Giaschi D

更新日期：2004-01-01 00:00:00

abstract：:The role of the perceptual organization of the visual display on eye movement control was examined in two experiments using a task where a two-saccade sequence was directed toward either a single elongated object or three separate shorter objects. In the first experiment, we examined the consequences for the second sa...

journal_title：Vision research

authors： Vergilino-Perez D,Findlay JM

更新日期：2006-07-01 00:00:00

abstract：:In the present study we addressed the issue of whether the Gestalt principle of grouping by similarity (iso-orientation) subtends extraction of straight contours made up of disconnected, iso-oriented Gabor elements, whether collinear (snakes) or parallel (ladders). To prevent the use of the most obvious grouping princ...

journal_title：Vision research

authors： Bellacosa Marotti R,Pavan A,Casco C

更新日期：2012-10-15 00:00:00

abstract：:We have used the minimum-motion stimulus of Cavanagh, MacLeod & Anstis [(1987) Journal of the Optical Society of America A, 4, 1428-1438] to examine how signals along different directions in color space interact in motion perception. Stimuli were pairs of counterphasing gratings combined 90 deg out of phase in both sp...

journal_title：Vision research

authors： Webster MA,Mollon JD

更新日期：1997-06-01 00:00:00

abstract：:Some blind humans use sound to navigate by emitting mouth-clicks and listening to the echoes that reflect from silent objects and surfaces in their surroundings. These echoes contain information about the size, shape, location, and material properties of objects. Here we present results from an fMRI experiment that in...

journal_title：Vision research

authors： Milne JL,Arnott SR,Kish D,Goodale MA,Thaler L

更新日期：2015-04-01 00:00:00