Small foveal targets for studies of accommodation and the Stiles-Crawford effect.

abstract：:We compared the effectiveness of central and peripheral targets in a saccadic countermanding task. Stop-signal reaction times (SSRTs) do not differ significantly for central and peripheral stop signals. Further, when central and peripheral stop signals are presented together, SSRTs behave as expected of independent pr...

journal_title：Vision research

authors： Asrress KN,Carpenter RH

更新日期：2001-09-01 00:00:00

abstract：:Quite independently of what they represent, some images provoke discomfort, and even headaches and seizures in susceptible individuals. The visual system has adapted to efficiently process the images it typically experiences, and in nature these images are usually scale-invariant. In this work, we sought to characteri...

journal_title：Vision research

authors： Penacchio O,Wilkins AJ

更新日期：2015-03-01 00:00:00

abstract：:The integration of spatially distinct elements into coherent objects is a fundamental process of vision. Yet notwithstanding an extensive literature on perceptual grouping, we still lack a clear understanding of the representational consequences of grouping disparate visual locations. We investigated this question in ...

journal_title：Vision research

authors： Harrison SJ,Feldman J

更新日期：2009-11-01 00:00:00

abstract：:An intensive nonlinearity in the visual system can produce distortion products, or difference frequency gratings, when observers view two high contrast, high spatial frequency interference fringes of slightly different frequency or orientation added together at the retina. These distortion products are visible even wh...

journal_title：Vision research

authors： MacLeod DI,Williams DR,Makous W

更新日期：1992-02-01 00:00:00

abstract：:When participants can temporally prepare for a visual target stimulus, responses to this stimulus are faster and more accurate. Recent accounts attribute these effects either to an earlier accumulation of stimulus information or to an increased rate of information sampling. The present study examines whether temporal ...

journal_title：Vision research

authors： Bausenhart KM,Rolke B,Seibold VC,Ulrich R

更新日期：2010-06-01 00:00:00

abstract：:By presenting oriented Gabor patches either monocularly or binocularly, we dissociated retinal orientation from perceived tilt and perceived slant. After adapting to binocular patches, with zero apparent tilt and non-zero slant, small tilt after-effects (TAEs) and large slant after-effects (SAE) were measured. Adaptin...

journal_title：Vision research

authors： Adams WJ,Mamassian P

更新日期：2002-10-01 00:00:00

abstract：:Two-frame random-element kinematograms were used to study the matching algorithm employed by the visual system to keep track of moving elements. Previous data have shown that the maximum spatial displacement detectable (dmax) for random-dot kinematogram stimuli increases both with increasing dot size and with decreasi...

journal_title：Vision research

authors： Eagle RA,Rogers BJ

更新日期：1996-02-01 00:00:00

abstract：:The paper reports psychophysical experiments set up to study the visual cues used in texture discrimination. In particular, the special role of "textons", i.e. distinct visual features such as blobs of different size, lines at different orientation, line intersections ("crossings") and line ends ("terminators") which ...

journal_title：Vision research

authors： Nothdurft HC

更新日期：1991-01-01 00:00:00

abstract：:The spectral sensitivity of single units in the torus semicircularis (TS) of small (< 30 g) and large (> 60 g) juvenile rainbow trout, Oncorhynchus mykiss, was investigated. All examined units (n = 39) showed inputs from the long and medium cone mechanisms. In addition, a majority of units (28 of 39) in both size grou...

journal_title：Vision research

authors： Coughlin DJ,Hawryshyn CW

更新日期：1994-06-01 00:00:00

abstract：:Evidence obtained using the dynamic grouping method has shown that the grouping of an object's connected surfaces has properties characteristic of a nonlinear dynamical system. When a surface's luminance changes, one of its boundaries is perceived moving across the surface. The direction of this dynamic grouping (DG) ...

journal_title：Vision research

authors： Hock HS,Schöner G

更新日期：2016-09-01 00:00:00

abstract：:A series of multiple regression analyses was conducted on a corpus of eye movement data to examine whether the influence of properties of words n-1 and n+1 on the time spent fixating word n changes as a function of whether word n is associated with a punctuation mark (i.e., whether or not a punctuation mark separates ...

journal_title：Vision research

authors： Pynte J,Kennedy A

更新日期：2007-04-01 00:00:00

abstract：:We have examined the ability of observers to determine the direction of movement of a variety of colored plaid patterns. When the two plaid components are of unequal spatial frequency or of unequal luminance or chromatic contrast, observers judge the direction of movement incorrectly. These errors are correlated with ...

journal_title：Vision research

authors： Kool FL,De Valois KK

更新日期：1992-04-01 00:00:00

abstract：:The predominance of rivalrous targets is affected by surrounding context when stimuli rival in orientation, motion or color. This study investigated the influence of chromatic context on binocular color rivalry. The predominance of rivalrous chromatic targets was measured in various surrounding contexts. The first exp...

journal_title：Vision research

authors： Hong SW,Shevell SK

更新日期：2008-03-01 00:00:00

abstract：:For rapidly translating targets, vernier thresholds correspond to millisecond asynchronies between targets. The 'temporal hypothesis' is that these thresholds reflect the limiting sensitivity of asynchrony detectors. Previous studies showed that temporal thresholds are generally higher than vernier thresholds, but fai...

journal_title：Vision research

authors： Mechler F,Victor JD

更新日期：2000-01-01 00:00:00

abstract：:The spectral sensitivity and the spatial selectivity was studied both psychophysically and electroretinographically using the pattern onset-offset paradigm. All measurements were made under intensive yellow adaptation. The spectral sensitivity functions of both measures were in close agreement. They showed a peak at 4...

journal_title：Vision research

authors： Korth M,Nguyen NX,Rix R,Sembritzki O

更新日期：1993-02-01 00:00:00

abstract：:Spatiotopic cues, such as perceived distance, have little effect on accommodation unless blur has been reduced or eliminated. We investigated the effect of perceived distance on accommodation under binocular steady-state conditions, about which little is known. Blur was reduced but not eliminated by using a stimulus w...

journal_title：Vision research

authors： Kotulak JC,Morse SE

更新日期：1995-03-01 00:00:00

abstract：:Dopaminergic and indoleamine accumulating neurons can be demonstrated both in the light and the electron microscopes. Considerable differences have been found between different animal species. There are two types of dopaminergic neurons, the interamacrine cells and the interplexiform cells. The interamacrine cells con...

journal_title：Vision research

authors： Ehinger B

更新日期：1983-01-01 00:00:00

abstract：:This paper discusses a number of points that arise in the visual interpretation of optic flow fields. Particular attention is given to the case in which a flow field is visually ambiguous, and the paper concludes with a detailed description of the case of the moving plane. ...

journal_title：Vision research

authors： Longuet-Higgins HC

更新日期：1986-01-01 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：:Females heterozygous for congenital colour vision defects are of interest because they are believed to have cone photoreceptor ratios and cone photopigments that differ from normal. We describe a molecular genetic method to identify protan carriers that involves characterizing the genes that occur in the most upstream...

journal_title：Vision research

authors： Kainz PM,Neitz M,Neitz J

更新日期：1998-11-01 00:00:00

abstract：:A chemical mutagenesis to identify zebrafish eye morphological mutants was performed by screening F(3) larvae at 5 and 7 days post-fertilization (dpf) for changes in eye or pupil size. Based on histological analysis, four different phenotypic classes were obtained. The two Class I and three Class II mutants are all ch...

journal_title：Vision research

authors： Vihtelic TS,Hyde DR

更新日期：2002-02-01 00:00:00

abstract：:Human subjects perceive two crossing bars, one in front of the other, when shown a cross with disparity added to its horizontal limbs, and they also perceive neon-color spreading when shown a stereoscopic Redies-Spillmann figure. It has thus been hypothesized that the human visual system follows the principle of gener...

journal_title：Vision research

authors： Uka T,Tanaka H,Kato M,Fujita I

更新日期：1999-07-01 00:00:00

abstract：:Previous studies have indicated that peripheral resolution for achromatic gratings is sampling limited and directly related to the density of the underlying midget ganglion cell population. Previous studies by the authors have shown that peripheral resolution for blue-cone isolating gratings is also sampling limited, ...

journal_title：Vision research

authors： Zlatkova MB,Coulter E,Anderson RS

更新日期：2003-01-01 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：:Cortical visual evoked potentials (VEPs) in response to gratings temporally modulated in counterphase were recorded in normal and dark-reared pigmented rats. Temporal modulation was either sinusoidal (0.25-15 Hz, steady state condition) or abrupt (0.5 Hz, transient condition). In normals, the amplitude spectrum of con...

journal_title：Vision research

authors： Pizzorusso T,Fagiolini M,Porciatti V,Maffei L

更新日期：1997-02-01 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：:It is not known how glutamate released synaptically in the outer plexiform layer of the retina is inactivated. Since there is no extracellular enzymatic degradation, glutamate released from photoreceptors is taken up intracellularly by at least one of the three transporters known, and metabolized by a glutamate degrad...

journal_title：Vision research

authors： Derouiche A

更新日期：1996-12-01 00:00:00

abstract：:The purpose of this study was to examine if there is an ERG component (alpha-wave, b-wave, oscillatory potentials) which can be used to account for the intraretinal processing time. To address this issue, ERGs and LGN unit responses were recorded simultaneously from anesthetized and paralyzed rabbits. A gradual decrea...

journal_title：Vision research

authors： Benoit J,Lachapelle P

更新日期：1990-01-01 00:00:00

abstract：:In the retina of Siberian sturgeon, three spectral classes of photoreceptors were identified by microspectrophotometry. These were rods, oil drop-containing and oil drop-free cones possessing P549, and oil drop-containing cones possessing P613 and P465. With intracellular recordings, rod-driven, cone-driven, and mixed...

journal_title：Vision research

authors： Govardovskii VI,Byzov AL,Zueva LV,Polisczuk NA,Baburina EA

更新日期：1991-01-01 00:00:00

abstract：:Human motion perception is assumed to be functionally described by an array of bi-local detectors feeding later, higher order computational stages. Using this model as a guide, improvement of spatio-temporal displacement sensitivity by temporal integration (summation) was measured in human central vision using random ...

journal_title：Vision research

authors： Fredericksen RE,Verstraten FA,Van de Grind WA

更新日期：1994-02-01 00:00:00