Transsaccadic perception of translating objects: effects of landmark objects and visual field position.

abstract：:Reduced perceptual span is one factor which limits reading speed in patients with macular disease. This study measured the perceptual span and the number of saccades to locate a target in 18 patients with macular disease and seven control subjects on two occasions separated by up to 12 months. Perceptual span changed ...

journal_title：Vision research

authors： Crossland MD,Rubin GS

更新日期：2006-02-01 00:00:00

abstract：:We compared the thresholds and response properties of extracellularly recorded retinal ganglion cells (RGCs) in wild-type and rd1 mouse retinas to electrical stimulation of the retinal neural network. Retinas were stimulated in vitro with biphasic current pulses (1 ms/phase) applied with a 400-microm diameter, subreti...

journal_title：Vision research

authors： Jensen RJ,Rizzo JF 3rd

更新日期：2008-06-01 00:00:00

abstract：:The striate cortex of macaque monkeys contains an array of patches which stain heavily for the enzyme cytochrome oxidase (CO blobs). Cells inside and outside these blobs are often described as belonging to two distinct populations or streams. In order to better understand the function of the CO blobs, we measured the ...

journal_title：Vision research

authors： Edwards DP,Purpura KP,Kaplan E

更新日期：1995-06-01 00:00:00

abstract：:Two general approaches to the visual control of action have emerged in last few decades, known as the on-line and model-based approaches. The key difference between them is whether action is controlled by current visual information or on the basis of an internal world model. In this paper, we evaluate three hypotheses...

journal_title：Vision research

authors： Zhao H,Warren WH

更新日期：2015-05-01 00:00:00

abstract：:Photoreception in echinoderms has been studied for several years with a focus on the dermal photoreceptors of echinoids. Even though spatial vision has been proposed for this dermal photosystem, by far the most advanced system is found in a number of asteroids where an unpaired tube foot at the tip of each arm carries...

journal_title：Vision research

authors： Beer S,Wentzel C,Petie R,Garm A

更新日期：2016-10-01 00:00:00

abstract：:It has been shown that in the initial stages of motion processing, the ON and OFF pathways stay more or less separated. There is evidence that this distinction between motion signals from opposite contrast polarities remains at least partly intact in the integration stage of local motion information. At the same time,...

journal_title：Vision research

authors： van der Smagt MJ,Breij EC,van de Grind WA

更新日期：2000-01-01 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：:To investigate the relative sensory and perceptual contributions to central visual function of patients with retinitis pigmentosa (RP), we tested symmetry discrimination using block patterns with varying types of symmetric organization. Eleven control subjects with normal vision and 11 patients with RP with 20/30 visu...

journal_title：Vision research

authors： Szlyk JP,Seiple W,Xie W

更新日期：1995-06-01 00:00:00

abstract：:Increment-threshold spectral sensitivity functions were taken foveally and at four other retinal locations with different sized test stimuli. For the fovea and parafovea at 4 degrees, a 1 degree, 250 msec stimulus of variable wavelength, flashed on a 1000 td white background yielded spectral sensitivity curves with th...

journal_title：Vision research

authors： Kuyk TK

更新日期：1982-01-01 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：:Phosphatase enzymes cleave an inorganic phosphate from a substrate. Phosphatase enzyme histochemistry followed by flat-embedding in glycol methacrylate is extremely useful in studying retinal and choroidal vascular development and loss, since only viable blood vessels have these enzyme activities. Sites of occlusion a...

journal_title：Vision research

authors： Lutty GA,McLeod DS

更新日期：2005-12-01 00:00:00

abstract：:A novel cDNA encoding alpha subunit of the GTP-binding protein, transducin, has been cloned from a marine fish, Sparus aurata. The cDNA contains an open reading frame of 1050 nt (encoding 350 amino acid residues). A high degree of identity was found with known mammalian transducin proteins of cones (Gt2 alpha) or rods...

journal_title：Vision research

authors： Funkenstein B,Jakowlew SB

更新日期：1997-09-01 00:00:00

abstract：:Since individuals who have lost an eye in early life rely on monocular information, one asked if they would better estimate the time to collision (TTC) with an approaching object based on the monocular cue [(θ/(dθ/dt), i.e. tau] than a control group using only monocular information. Estimates of TTC were m...

journal_title：Vision research

authors： Steeves JK,Gray R,Steinbach MJ,Regan D

更新日期：2000-01-01 00:00:00

abstract：:We studied direction discrimination for lines moving obliquely relative to their orientation. Manipulating contrast, length and duration of motion, we found systematic errors in direction discrimination at low contrast, long length and/or short durations. These errors can be accounted for by a competition between ambi...

journal_title：Vision research

authors： Lorenceau J,Shiffrar M,Wells N,Castet E

更新日期：1993-06-01 00:00:00

abstract：:The present study showed that at equiluminance the critical duration of temporal integration became shorter as the chromatic saturation of an adaptation field was increased. These results suggest that the chromatic coding system (which is assumed to posses poorer temporal resolution or larger temporal integration time...

journal_title：Vision research

authors： Kawabata Y

更新日期：1994-04-01 00:00:00

abstract：:A panel of anti-bovine rhodopsin monoclonal antibodies (MAbs) of defined site-specificity has been prepared and used for functional and topographic studies of rhodopsins. In order to select these antibodies, hybridoma supernatants that contained anti-rhodopsin antibodies have been screened by enzyme-linked immunosorbe...

journal_title：Vision research

authors： Adamus G,Zam ZS,Arendt A,Palczewski K,McDowell JH,Hargrave PA

更新日期：1991-01-01 00:00:00

abstract：:Six observers were asked to indicate in which of two opposite directions, to the right or to the left, an entire display appeared to move, based on the proportion of right vs leftward motion elements, each of which was distinctly visible. The performance of each observer was described by Thurstone's discriminative pro...

journal_title：Vision research

authors： Raidvee A,Averin K,Kreegipuu K,Allik J

更新日期：2011-09-01 00:00:00

abstract：:It has been proposed that there is a perceptual compensation for the difference between the speeds of light and sound. We examined this possibility using a range of auditory-visual tasks, in which performance depends on the relative timing of auditory and visual information, and manipulated viewing distance to test fo...

journal_title：Vision research

authors： Arnold DH,Johnston A,Nishida S

更新日期：2005-05-01 00:00:00

abstract：:A new discrete-time reverse-correlation scheme for the study of visual neurons is proposed. The visual stimulus is generated by drawing with uniform probability, at each refresh time, an image from a finite set S of orthonormal images. We show that if the neuron can be modeled as a spatiotemporal linear filter followe...

journal_title：Vision research

authors： Ringach DL,Sapiro G,Shapley R

更新日期：1997-09-01 00:00:00

abstract：:Genetic analyses were performed on five male children (approximately 3 years), two suspect color-normals and three suspects for congenital color vision deficiencies. These classifications were based on visually-evoked potential (VEP) responses to M- and L-cone-isolating stimuli obtained in a previous study when each s...

journal_title：Vision research

authors： Bieber ML,Werner JS,Knoblauch K,Neitz J,Neitz M

更新日期：1998-11-01 00:00:00

abstract：:We are quantifying the distribution of photoreceptors and ganglion cells in human retina with the goal of establishing a reliable anatomical database which may be compared to information about visual function. We required a representation of retinal cell distributions which facilitated collection, analysis, and displa...

journal_title：Vision research

authors： Curcio CA,Sloan KR,Meyers D

更新日期：1989-01-01 00:00:00

abstract：:Three experiments of visual search for a cube (for a square pillar in Experiment 3) with an odd conjunction of orientation of faces and color (a cube with a red top face and a green right face among cubes with a green top face and a red right face, for example) showed that the search is made more efficient by arrangin...

journal_title：Vision research

authors： Morita H,Kumada T

更新日期：2003-08-01 00:00:00

abstract：:A static or counterphase (target) grating surrounded by drifting (inducer) gratings is perceived to move in the direction opposite that of the inducers. We compared the relative magnitudes of these simultaneous motion contrasts generated by both first-order and second-order stimuli. The first-order stimuli were sinuso...

journal_title：Vision research

authors： Nishida S,Edwards M,Sato T

更新日期：1997-01-01 00:00:00

abstract：:Reentrant processing has been proposed as a critical mechanism in visual perception of an object's features. In order to test whether reentry is critical for visual awareness of object presence, the success of reentry was manipulated with object substitution masking (OSM) while participants performed a forced-choice t...

journal_title：Vision research

authors： Koivisto M

更新日期：2012-06-15 00:00:00

abstract：:A dysfunction of dopaminergic retinal neurons is thought to occur in Parkinson's disease, manifesting itself in impaired performance on various visual discrimination tasks. We have investigated whether differences in colour discrimination could readily be detected between a normal group and a Parkinsonian group, using...

journal_title：Vision research

authors： Regan BC,Freudenthaler N,Kolle R,Mollon JD,Paulus W

更新日期：1998-11-01 00:00:00

abstract：:Contours are believed to play a key role in the visual analysis of scenes by the primate brain. In dynamic scenes, the presence of contours is often signaled by discontinuities in motion fields. However, it is unclear whether the motion fields over which the visual system extracts discontinuities, correspond to the lo...

journal_title：Vision research

authors： Sinha P

更新日期：2001-03-01 00:00:00

abstract：:We measured the spatial receptive field dimensions of cells in the lateral geniculate nucleus (LGN) of the common marmoset (Callithrix jacchus) using a bipartite field stimulus in which the two halves of the field were modulated identically but in counterphase. Horizontal and vertical edges between the two fields were...

journal_title：Vision research

authors： Kremers J,Weiss S

更新日期：1997-08-01 00:00:00

abstract：:Presentation of different images to the two eyes normally results in a time-varying alternation between the two images (binocular rivalry). However, we find that when orthogonal gratings are viewed dichoptically at low contrast, a stable summation between the two images is perceived in the form of a dichoptic plaid. T...

journal_title：Vision research

authors： Liu L,Tyler CW,Schor CM

更新日期：1992-08-01 00:00:00

abstract：:Data on the simple reaction time to motion onset presented in Ball and Sekuler [Psychol. Rev. 87, 435-469 (1980)] and Tynan and Sekuler [Vision Res. 20, 709-715 (1982)] are re-analysed on the basis of local dispersion model of motion detectability. According to this model the detectability at the moment t is determine...

journal_title：Vision research

authors： Allik J,Dzhafarov EN

更新日期：1984-01-01 00:00:00

abstract：:The role of eye-muscle potentiation in adaptation to prismatic tilt was evaluated by assessing the presence of cyclotorsion induced by prolonged wearing of tilting prisms. Fundus photographs, containing the retinal image of the test line adjusted to the subjective vertical, were obtained before and after prism viewing...

journal_title：Vision research

authors： Mikaelian HH,Mikaelian DM,Cameron EL

更新日期：1990-01-01 00:00:00