abstract：:It is possible to discriminate between grating contrasts over a 300-fold contrast range, whereas V1 neurons have very limited dynamic ranges. Using populations of model neurons with contrast-response parameters taken from electrophysiological studies (cat and macaque), we investigated ways of combining responses to co...

journal_title：Vision research

authors： Clatworthy PL,Chirimuuta M,Lauritzen JS,Tolhurst DJ

更新日期：2003-08-01 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：:Extra-retinal information about eye velocity is thought to play an important role in compensating the retinal motion experienced during an eye movement. Evidently this compensation process is prone to error, since stimulus properties such as contrast and spatial frequency have marked effect on perceived motion with re...

journal_title：Vision research

authors： Sumnall JH,Freeman TC,Snowden RJ

更新日期：2003-07-01 00:00:00

abstract：:In this paper, an extended multifocal VEP/ERG paradigm, referred to as the unified multifocal electroretinography and visual evoked potential paradigm (UMEV), is presented. This paradigm allows a simultaneous recording of luminance responses, temporal interactions, spatial interactions and spatial-temporal interaction...

journal_title：Vision research

authors： Zhang X

更新日期：2003-07-01 00:00:00

abstract：:The Superposition Hypothesis states that the binocular vision of newborn infants blends together the monocular visual responses of the two eyes, even when the visual stimulus evokes binocular rivalry in adults. According to the Superposition Hypothesis, this blending is replaced by binocular rivalry after the emergenc...

journal_title：Vision research

authors： Brown AM,Miracle JA

更新日期：2003-06-01 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：:With progressively brighter stimuli, the amplitude of the photopic b-wave first increases, briefly saturates and then decreases gradually to reach a plateau, where the amplitude of the b-wave equals that of the a-wave; a phenomenon previously presented as the photopic hill. The unique presentation of this luminance-re...

journal_title：Vision research

authors： Rufiange M,Dassa J,Dembinska O,Koenekoop RK,Little JM,Polomeno RC,Dumont M,Chemtob S,Lachapelle P

更新日期：2003-06-01 00:00:00

abstract：:A review of the neurophysiological literature suggests that the magnocellular pathway has adequate spatial-frequency and contrast sensitivity to perceive text under normal contrast conditions (>10%) and also is suppressed by red light. Results from three experiments involving color and reading show that red light impa...

journal_title：Vision research

authors： Chase C,Ashourzadeh A,Kelly C,Monfette S,Kinsey K

更新日期：2003-05-01 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：:Pulses of low intensity current, delivered through a cuff electrode chronically implanted around the optic nerve of a blind retinitis pigmentosa patient generate visual sensations. These phosphenes are obtained at lower thresholds for a train of stimuli than for single pulses, which suggests the existence of a spatial...

journal_title：Vision research

authors： Delbeke J,Oozeer M,Veraart C

更新日期：2003-04-01 00:00:00

abstract：:The eyes are always moving even during fixation, making the retinal image move concomitantly. While these motions activate early visual stages, they are excluded from one's perception. A striking illusion reported here renders them visible: a static pattern surrounded by a synchronously flickering pattern appears to m...

journal_title：Vision research

authors： Murakami I

更新日期：2003-04-01 00:00:00

abstract：:Since the first reports describing the injection of recombinant adeno-associated viral (AAV) vectors in the murine eye, the advancement of the field has been enormous resulting in the correction of several animal models of retinal diseases. The recent development of "pseudotyped" AAV vectors with transduction characte...

journal_title：Vision research

authors： Auricchio A

更新日期：2003-04-01 00:00:00

abstract：:A slowly moving foreground with an orthogonally moving background can induce self-motion perception in the same direction as the foreground motion (inverted vection; [Vision Research 40 (2000) 2915]). In the present study, we investigate the effect of sustained gaze deviation on inverted vection. We hypothesized that ...

journal_title：Vision research

authors： Nakamura S,Shimojo S

更新日期：2003-03-01 00:00:00

abstract：:We investigated global motion processing in a group of adult amblyopes using a method that allows us to factor out any influence of the known contrast sensitivity deficit. We show that there are independent global motion processing deficits in human amblyopia that are unrelated to the contrast sensitivity deficit, and...

journal_title：Vision research

authors： Simmers AJ,Ledgeway T,Hess RF,McGraw PV

更新日期：2003-03-01 00:00:00

abstract：:Physiological studies of non-human primates have suggested that the direction of gaze can modulate the gain of neuronal responses to visual stimuli in many cortical areas including V1. The neural gaze modulation is suggested to subserve the conversion from gaze-independent (eye-centered) to dependent (e.g., head-cente...

journal_title：Vision research

authors： Nishida S,Motoyoshi I,Andersen RA,Shimojo S

更新日期：2003-03-01 00:00:00

abstract：:Prior studies using brief stimulus sequences revealed "opponent shape aftereffects", indicative of direct opponent coding of global shape attributes such as aspect ratio, skew, taper, curvature, and convexity (perhaps in IT). Further, aftereffects from overlapped opponent pairs of adaptor shapes (e.g., concave and con...

journal_title：Vision research

authors： Suzuki S

更新日期：2003-03-01 00:00:00

abstract：:Small disparity stimuli applied to large random-dot patterns elicit machine-like vergence eye movements at short latency. We have examined the sensitivity of these eye movements to simulated orthogonal tropias in three normal subjects by recording (1) the effects of vertical disparities on the initial horizontal verge...

journal_title：Vision research

authors： Yang DS,FitzGibbon EJ,Miles FA

更新日期：2003-02-01 00:00:00

abstract：:To investigate the sources of spatial error in memory-guided saccades (MGS), we have trained monkeys on two different tasks: a MGS task and a delayed spatial match-to-sample (MTS) task. We first tested the effect of introducing a post-saccadic visual feedback on the accuracy of MGS. We found that visual feedback had a...

journal_title：Vision research

authors： Opris I,Barborica A,Ferrera VP

更新日期：2003-02-01 00:00:00

abstract：:Fixation disparity or vergence noise produce instantaneous vergence errors. These errors are analogous to the imposition of a pedestal disparity, which is known to elevate stereothresholds. In this study, stereothresholds were measured as a function of induced vergence errors in subjects with normal binocular vision. ...

journal_title：Vision research

authors： Ukwade MT,Bedell HE,Harwerth RS

更新日期：2003-01-01 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：:Discrimination between a figure and its surround is an important first step of pattern recognition. This discrimination usually relies, as a first step, on the detection of borders between a figure and its surround, for example based on spatial gradients in luminance, colour, or texture. There is evidence that neurone...

journal_title：Vision research

authors： Fahle M,Quenzer T,Braun C,Spang K

更新日期：2003-01-01 00:00:00

abstract：:In most visual search experiments in the laboratory, objects are presented on an isolated, blank background. In most real world search tasks, however, the background is continuous and can be complex. In six experiments, we examine the ability of the visual system to separate search items from a background. The results...

journal_title：Vision research

authors： Wolfe JM,Oliva A,Horowitz TS,Butcher SJ,Bompas A

更新日期：2002-12-01 00:00:00

abstract：:There is ample psychophysical evidence that flicker is more salient in the peripheral than the central visual field, but the physiological basis of this eccentricity-dependant change is unclear. Here, we compared responsivity to temporal modulation of ganglion cells in central and peripheral primate retina. Above 30 H...

journal_title：Vision research

authors： Solomon SG,Martin PR,White AJ,Rüttiger L,Lee BB

更新日期：2002-12-01 00:00:00

abstract：:Moving stimuli cause the position of flashed stimuli to appear shifted in the direction of motion (position capture). To examine whether position capture depends on low-level motion interactions or perception of integrated object motion, we employed a slit-view display. Two line-drawn diamonds translated horizontally ...

journal_title：Vision research

authors： Watanabe K,Nijhawan R,Shimojo S

更新日期：2002-11-01 00:00:00

abstract：:We examined the velocity dependence of the vergence and version eye movements elicited by motion stimuli that were symmetric or asymmetric at the two eyes. Movements of both eyes were recorded with the scleral search coil technique. Vergence was computed as the difference in the positions of the two eyes (left-right) ...

journal_title：Vision research

authors： Masson GS,Yang DS,Miles FA

更新日期：2002-11-01 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：PURPOSE:Less accommodation was found when human subjects read in blue (peak at about 440 nm) than when they read in red light (above 600 nm; [Kroger & Binder, British Journal of Ophthalmology 84 (2000) 890]). On the other hand, emmetropization in chickens did not appear to compensate for the chromatic defocus (385 nm v...

journal_title：Vision research

authors： Seidemann A,Schaeffel F

更新日期：2002-09-01 00:00:00

abstract：:Shape primitives have long been proposed as components for object models in the visual system, and account for a considerable body of behavioral findings. While a large amount of effort has been devoted to the study of detection of these parts in the scenes, no research has been undertaken simulating the acquisition o...

journal_title：Vision research

authors： Shams L,von der Malsburg C

更新日期：2002-08-01 00:00:00

abstract：:The effects of fourth nerve palsy on the vestibulo-ocular reflex (VOR) had not been systematically investigated. We used the magnetic scleral search coil technique to study the VOR in patients with unilateral fourth nerve palsy during sinusoidal head rotations in yaw, pitch and roll at different frequencies. In darkne...

journal_title：Vision research

authors： Wong AM,Sharpe JA,Tweed D

更新日期：2002-08-01 00:00:00

abstract：:Binocular disparity is an aspect of natural viewing. This research investigates whether disparity affects surface color perception. Achromatic settings were obtained and compared for two stereograms of a scene with specular reflections, one stereogram with binocular disparity and one without it (cyclopean view). Binoc...

journal_title：Vision research

authors： Yang JN,Shevell SK

更新日期：2002-07-01 00:00:00

abstract：:In the classic double-step paradigm, subjects are required to make a saccade to a visual target that is briefly presented at one location and then shifted to a new location before the subject has responded. The saccades in this situation are "reflexive" in that they are made in response to the appearance of the target...

journal_title：Vision research

authors： Sheliga BM,Brown VJ,Miles FA

更新日期：2002-07-01 00:00:00

abstract：:Using displacing prisms to dissociate the influence of optic flow and egocentric direction, previous research (Current Biology 8 (1998) 1191) showed that people primarily use egocentric direction to control their locomotion on foot, rather than optic flow. When wearing displacing prisms, participants followed the curv...

journal_title：Vision research

authors： Harris JM,Bonas W

更新日期：2002-06-01 00:00:00

abstract：:We investigated the influence of the Stiles-Crawford effect (SCE) of the first kind on the contrast sensitivity function using the apodisation model of the SCE. The SCE was measured for the right eyes of two subjects using an increment threshold technique involving a two-channel Maxwellian-viewing system. Filters made...

journal_title：Vision research

authors： Atchison DA,Scott DH

更新日期：2002-06-01 00:00:00

abstract：:Previously Gysen, De Graef, and Verfaillie [Vision Research 42 (2002) 379] showed that, with stimulus displays presenting one stationary and one translating object, sensitivity for intrasaccadic displacements was higher for translating than for stationary objects. In the present paper the importance of the relative en...

journal_title：Vision research

authors： Gysen V,Verfaillie K,De Graef P

更新日期：2002-06-01 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：:Subjects were given reflexive- and voluntary-saccade tasks using five different gap intervals (0-500 ms) between the fixation point offset and the target onset and an overlap paradigm (i.e., the fixation point remained on during the target presentation). In the first experiment, targets were monocularly presented, and...

journal_title：Vision research

authors： Honda H

更新日期：2002-05-01 00:00:00

abstract：:Peripheral resolution acuity for achromatic gratings is known to be limited by the density of the underlying ganglion cell sampling array. After confirming isolation of the short-wavelength sensitive (SWS) system using chromatic adaptation methods, we wished to determine if resolution is limited by blue/yellow ganglio...

journal_title：Vision research

authors： Anderson RS,Zlatkova MB,Demirel S

更新日期：2002-04-01 00:00:00

abstract：:Foley [J. Opt. Soc. Am. A 11 (1994) 1710] has proposed an influential psychophysical model of masking in which mask components in a contrast gain pool are raised to an exponent before summation and divisive inhibition. We tested this summation rule in experiments in which contrast detection thresholds were measured fo...

journal_title：Vision research

authors： Meese TS,Holmes DJ

更新日期：2002-04-01 00:00:00

abstract：:We designed two extensions of Saslow's well-known gap and overlap conditions that require increased voluntary effort because of the progressive elimination of target onsets and fixation point offsets, and obtained repeatable data obeying simple numerical relations. For each of the five stimulus lighting conditions, sa...

journal_title：Vision research

authors： Kalesnykas RP,Hallett PE

更新日期：2002-03-01 00:00:00

abstract：:The attentional mechanisms in the brain responsible for fast pop-out search and slower difficult search have been shown to interact. Even if pop-out search is interrupted, by the addition of extra distractors to an initially simple search display, the partial computations calculated by the mechanisms responsible for p...

journal_title：Vision research

authors： Olds ES,Punambolam RJ

更新日期：2002-03-01 00:00:00