A comparison of spatio-temporal receptive fields of ganglion cells in the retinas of the tadpole and adult frog.

abstract：:It is well known how early visual experience is critical for the development of multisensory processing abilities, and for this reason an early vision impairment could hinder the transfer of different sensory information during the exploration and recognition of the surrounding environment. Recently, we verified that ...

journal_title：Vision research

authors： Purpura G,Febbrini Del Magro E,Caputo R,Cioni G,Tinelli F

更新日期：2021-01-01 00:00:00

abstract：:Investigations of binocular visual direction have concentrated mainly on stationary objects. Eye positions were generally not measured and binocular fixation was assumed to be perfect. During the viewing of stationary objects, vergence errors are not negligible but small. During the viewing of moving objects, however,...

journal_title：Vision research

authors： Erkelens CJ,Van EE R

更新日期：1997-07-01 00:00:00

abstract：:At temporal frequencies between approximately 30 and 70 Hz, the flicker electroretinogram (ERG) of the cone system can exhibit an alternation in response amplitude from cycle to cycle that has been termed synchronous period doubling. This phenomenon has been attributed to a nonlinear feedback mechanism at an early ret...

journal_title：Vision research

authors： Alexander KR,Raghuram A

更新日期：2007-02-01 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：:We examined variation in the visual system both within and among seven species of darters, colorful freshwater fishes of the genus Etheostoma. Using microspectrophotometry, we found that darters possess rod photoreceptor cells, single cone photoreceptor cells containing middle wavelength sensitive (MWS) visual pigment...

journal_title：Vision research

authors： Gumm JM,Loew ER,Mendelson TC

更新日期：2012-02-15 00:00:00

abstract：:We investigated temporal summation of the rods in a complete achromat, who lacks cone vision. Critical duration (tc) was estimated both at the achromat's preferred area of fixation and at an area 12 deg laterally in the nasal visual field. Comparable tc determinations were made in a normal trichromat. At background lu...

journal_title：Vision research

authors： Sharpe LT,Fach C,Nordby K

更新日期：1988-01-01 00:00:00

abstract：:We investigated Werner's binocular depth-contrast effect. Subjects viewed stereograms consisting of a test pattern and an inducing pattern. The half-images of the inducing pattern were either horizontally scaled or sheared relative to each other. Subjects judged the (induced) perceived slant of the test pattern. We we...

journal_title：Vision research

authors： van Ee R,Erkelens CJ

更新日期：1996-08-01 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：: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：:It is now clear, contrary to previous conclusions, that motion may be conveyed by purely chromatic stimuli. The question considered here is how the mechanisms for assessing motion of luminance and chromatic stimuli differ. The dependence on contrast of amplitude thresholds for the perception of oscillatory motion was ...

journal_title：Vision research

authors： Krauskopf J,Li X

更新日期：1999-10-01 00:00:00

abstract：:The present study demonstrates that an object embedded in an array of identical objects can pop-out. Dependent on the stimuli preceding the search display, local (chromatic) adaptation causes an identical object to pop-out because it appears to have a colour (Expt 1) or brightness (Expt 2) that is slightly different f...

journal_title：Vision research

authors： Theeuwes J,Lucassen MP

更新日期：1993-11-01 00:00:00

abstract：:Stiles' pi 1 and pi 3 mechanisms are thought to reflect adaptation events at two sites in a single pathway, the first site controlled by the short-wavelength cones alone, the second site controlled by opposing signals from these cones vs the other cone classes. We examined this pathway's temporal integration under con...

journal_title：Vision research

authors： Friedman LJ,Yim MH,Pugh EN Jr

更新日期：1984-01-01 00:00:00

abstract：:Using retrograde HRP labeling from the optic nerve (ON) or optic tectum (OT), we have visualized large ganglion cells (LGCs) in wholemounted retinas of the teleost Pholidapus dybowskii and studied their morphology and spatial properties. In all, three LGC types were distinguished. In a previous paper, detailed data we...

journal_title：Vision research

authors： Pushchin II,Podugolnikova TA,Kondrashev SL

更新日期：2007-11-01 00:00:00

abstract：:The aim of this study was twofold, first to determine the effect of field view size and second of illumination conditions on the selection of unique hue samples (UHs: R, Y, G and B) from two rotatable trays, each containing forty highly chromatic Natural Color System (NCS) samples, on one tray corresponding to 1.4° an...

journal_title：Vision research

authors： Shamey R,Zubair M,Cheema H

更新日期：2015-08-01 00:00:00

abstract：:A Westheimer -like function has been obtained for simple reaction time (RT) to target luminance increments superimposed upon homogeneous background fields. RT to a constant-luminance target progressively increases as the outer diameter of a constant-luminance background is increased up to approximately 6'-8'. Further ...

journal_title：Vision research

authors： Wilson A

更新日期：1984-01-01 00:00:00

abstract：:Using new geometric information on the shape of the lens that has recently become available, a finite element model has been developed in order to estimate the forces that act on the lens during accommodation for a typical 29-year-old human eye. To investigate the influence of the anterior, posterior and central zonul...

journal_title：Vision research

authors： Hermans EA,Dubbelman M,van der Heijde GL,Heethaar RM

更新日期：2006-10-01 00:00:00

abstract：:Visual working memory is a system used to hold information actively in mind for a limited time. The number of items and the precision with which we can store information has limits that define its capacity. How much control do we have over the precision with which we store information when faced with these severe capa...

journal_title：Vision research

authors： Klyszejko Z,Rahmati M,Curtis CE

更新日期：2014-12-01 00:00:00

abstract：:Sustained fixation of a bright coloured stimulus will, on extinction of the stimulus and continued steady fixation, induce an afterimage whose colour is complementary to that of the initial stimulus; an effect thought to be caused by fatigue of cones and/or of cone-opponent processes to different colours. However, to ...

journal_title：Vision research

authors： Tsujimura S,Wolffsohn JS,Gilmartin B

更新日期：2003-06-01 00:00:00

abstract：:We consider how local motion signals are combined to represent the movements of spatially extensive objects. A series of band-pass target dots, whose collective motion defined a moving contour, was positioned within a field of randomly moving noise dots. The visibility of the contours did not depend on the direction o...

journal_title：Vision research

authors： Bex PJ,Simmers AJ,Dakin SC

更新日期：2003-09-01 00:00:00

abstract：:Weber contrast, DeltaL/L, is a widely used contrast metric for aperiodic stimuli. Zele, Cao & Pokorny [Zele, A. J., Cao, D., & Pokorny, J. (2007). Threshold units: A correct metric for reaction time? Vision Research, 47, 608-611] found that neither Weber contrast nor its transform to detection-threshold units equates ...

journal_title：Vision research

authors： Vassilev A,Murzac A,Zlatkova MB,Anderson RS

更新日期：2009-03-01 00:00:00

abstract：:Foveal pathway visual function was assessed in 11 patients having tumours extending into the suprasellar region but without evidence of visual impairment as assessed by visual acuity and Bjerrum screen campimetry. Psychophysical and routine visual evoked potential (VEP) measurements were obtained from the eye ipsilate...

journal_title：Vision research

authors： Gutowski NJ,Heron JR,Scase MO

更新日期：1997-05-01 00:00:00

abstract：:A simulated field test was designed to determine whether the Holmes-Wright A lantern (HWA) is a valid color vision test for the rail industry. The simulation replicated viewing rail signal lights at 0.8 km distance under daylight conditions. Using the worst-normal as the maximum number of allowable errors on the simul...

journal_title：Vision research

authors： Hovis JK,Oliphant D

更新日期：1998-11-01 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：:Trout lens external shape and internal refractive index gradient structure were measured and used to construct an optical lens model that predicts by ray tracing the average longitudinal spherical and chromatic aberration, focal length and image quality. The nearly spherical shape of the lens was measured from photogr...

journal_title：Vision research

authors： Jagger WS,Sands PJ

更新日期：1996-09-01 00:00:00

abstract：:We examined the ability of human observers to detect three kinds of statistical structure in binary arrays: first-order statistics (luminance), local fourth-order statistics (isodipole textures), and long-range statistics (bilateral symmetry). Performance was closest to ideal on the luminance task and furthest from id...

journal_title：Vision research

authors： Victor JD,Conte MM

更新日期：2005-04-01 00:00:00

abstract：:Normal subjects were first light adapted to a standard photopic background and a control photopic ERG was obtained. The subjects were then light adapted to a brighter background for 5 min at the end of which the luminance was returned to the control background and ERGs were taken at regular intervals. Most of the ERG/...

journal_title：Vision research

authors： Rousseau S,Lachapelle P

更新日期：2000-01-01 00:00:00

abstract：:Similarity ratings were obtained to determine the minimum number of Gabor components that would produce a comparison texture that appeared preattentively similar to a 64-component standard texture. All textures were chosen to be both specifiable by a relatively small number of localized spectral components and suffici...

journal_title：Vision research

authors： Geri GA,Lyon DR,Zeevi Y

更新日期：1995-02-01 00:00:00

abstract：:Both electro-physiological and psychophysical studies point to the existence of detectors specialised for the analysis of optic flow. However, it is unclear whether these detectors are tuned to specific 'cardinal directions' (such as radial and circular motion), or whether they respond equally to all directions of opt...

journal_title：Vision research

authors： Burr DC,Badcock DR,Ross J

更新日期：2001-02-01 00:00:00

abstract：:Subretinal injections of human retinal pigment epithelial (RPE) cells early in the course of retinal degeneration in Royal College of Surgeons (RCS) rats can rescue photoreceptors. Fourteen injected animals were studied using a double flash electroretinogram (ERG): 10 were examined longitudinally and four terminally w...

journal_title：Vision research

authors： Pinilla I,Lund RD,Lu B,Sauvé Y

更新日期：2005-03-01 00:00:00

abstract：:Local-motion information can provide either 1-dimensional (1D) or 2-dimensional (2D) solutions. 1D signals occur when the aperture problem has not been solved, so each signal is an estimate of the local-orthogonal component of the object's motion. 2D signals occur when the aperture problem has been solved, so each sig...

journal_title：Vision research

authors： Edwards M,Cassanello CR,Badcock DR,Nishida S

更新日期：2013-01-14 00:00:00