Greater losses in sensitivity to second-order local motion than to first-order local motion after early visual deprivation in humans.

abstract：:We have investigated first-order artifacts in second-order motion perception. Subjects were required to identify the orientation and direction of a drifting sinusoidal contrast modulation. When the carrier consisted of static two-dimensional noise, performance often reflected the use of first-order artifacts that aris...

journal_title：Vision research

authors： Smith AT,Ledgeway T

更新日期：1997-01-01 00:00:00

abstract：:5A11/Basigin is an immunoglobulin-like glycoprotein expressed on the surface of Müller cells, the apical and basal surfaces of the retinal pigmented epithelium, and photoreceptor cell bodies and their inner segments. Disruption of the 5A11/Basigin gene in the mouse results in photoreceptor degeneration and a correspon...

journal_title：Vision research

authors： Ochrietor JD,Moroz TP,Clamp MF,Timmers AM,Muramatsu T,Linser PJ

更新日期：2002-02-01 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：:The mechanisms underlying the parsing of a spatial distribution of velocity vectors into two adjacent (spatially segregated) or overlapping (transparent) motion surfaces were examined using random dot kinematograms. Parsing might occur using either of two principles. Surfaces might be defined on the basis of similarit...

journal_title：Vision research

authors： Smith AT,Curran W

更新日期：2000-01-01 00:00:00

abstract：:Over the past years, knowledge has expanded with regards to the multiple roles played by erythropoietin (EPO) in the body. Once believed to be a hormone synthesised in the kidney and involved only in the modulation of erythrocyte production, it is recognised now that EPO can be produced in many tissues, including the ...

journal_title：Vision research

authors： Reid G,Lois N

更新日期：2017-10-01 00:00:00

abstract：:Accurate saccadic and vergence eye movements towards selected visual targets are fundamental to perceive the 3-D environment. Despite this importance, shifts in eye gaze are not always perfect given that they are frequently followed by small corrective eye movements. The oculomotor system receives distinct information...

journal_title：Vision research

authors： Pérez Zapata L,Aznar-Casanova JA,Supèr H

更新日期：2013-06-28 00:00:00

abstract：:We examined the ability of observers to determine the vertical alignment of three Gabor patches (cosine gratings tapered in X and Y by Gaussians) when the grating within the middle patch was moving right or left. The comparison patches were flickered in counterphase, as was the test patch in a control condition. In al...

journal_title：Vision research

authors： De Valois RL,De Valois KK

更新日期：1991-01-01 00:00:00

abstract：:Stereoscopic depth is most useful when it comes from relative rather than absolute disparities. However, the depth perceived from relative disparities can vary with stimulus parameters that have no connection with depth or are irrelevant to the task. We investigated observers' ability to judge the stereo depth of task...

journal_title：Vision research

authors： Farell B,Ng CJ

更新日期：2019-05-01 00:00:00

abstract：:Subjects rated the strength of linear and rotary motion aftereffects (MAEs) on an eleven point scale. Inspection durations ranged from 30 to 180 sec in 30 sec steps. In Expt 1, trials using a single inspection duration were spaced at least 22 hr apart to minimize the possibility of interactions between adapting stimul...

journal_title：Vision research

authors： Hershenson M

更新日期：1993-09-01 00:00:00

abstract：:We present a novel binocular stimulus without conventional disparity cues whose presence and depth are revealed by sequential monocular stimulation (delay > or = 80 ms). Vertical white lines were occluded as they passed behind an otherwise camouflaged black rectangular target. The location (and instant) of the occlusi...

journal_title：Vision research

authors： Brooks KR,Gillam BJ

更新日期：2006-03-01 00:00:00

abstract：:How is a single visual direction assigned to a binocular feature for which the left and right eyes are signaling different directions? According to geometrical principles, binocular visual direction is the average of the visual directions measured from the left and right eyes. Contrary to this prediction, we have foun...

journal_title：Vision research

authors： Mansfield JS,Legge GE

更新日期：1996-01-01 00:00:00

abstract：:Recent studies suggest that adaptation effects for face shape and gender transfer from upright to inverted faces more than the reverse. We investigated whether a similar asymmetry occurred for face identity, using a recently developed adaptation method based on contrast-recognition thresholds. When adapting and test s...

journal_title：Vision research

authors： Guo XM,Oruç I,Barton JJ

更新日期：2009-09-01 00:00:00

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：: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：:In this review we discuss evidence from psychophysical, electrophysiological, and neuroimaging studies that demonstrates the updating of remembered visual space in a reference frame that is centred on the eye. We then extend these findings by discussing recent work from our lab. Specifically, we address eye-centred up...

journal_title：Vision research

authors： Thompson AA,Henriques DY

更新日期：2011-04-22 00:00:00

abstract：:Prior work suggests that internal features contribute more than external features to face processing. Whether this asymmetry is also true of the mental representations of faces is not known. We used face adaptation to determine whether the internal and external features of faces contribute differently to the represent...

journal_title：Vision research

authors： Hills C,Romano K,Davies-Thompson J,Barton JJ

更新日期：2014-07-01 00:00:00

abstract：:The binocular fusion of two center-surround configurations, where one center is brighter, the other darker than the common surround, leads to a strong impression of luster in the central patch. Without reversed contrast polarities of the center patches, this impression is much weaker or even absent. However, we observ...

journal_title：Vision research

authors： Wendt G,Faul F

更新日期：2020-11-01 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：:A dichoptic display in which the images are cyclorotated in opposite directions does not appear inclined. This suggests that perceived inclination depends on the difference between horizontal-shear and vertical-shear disparity. Large random-dot stereoscopic displays were presented with various types of shear disparity...

journal_title：Vision research

authors： Howard IP,Kaneko H

更新日期：1994-10-01 00:00:00

abstract：PURPOSE:A major drawback of the mouse model of myopia is that the ocular dimensions cannot be measured in vivo, and that histological techniques post-mortem suffer from limited resolution. We have tested the potential of a newly developed technique, optical low coherence interferometry (OLCI), adapted for short measure...

journal_title：Vision research

authors： Schmucker C,Schaeffel F

更新日期：2004-01-01 00:00:00

abstract：:We studied the detectability of dichoptically presented vertical grating patterns that varied in the ratio of the contrasts presented to the two eyes. The resulting threshold data fall on a binocular summation contour well described by a power summation equation with an exponent near 2. We studied the effect of adding...

journal_title：Vision research

authors： Anderson PA,Movshon JA

更新日期：1989-01-01 00:00:00

abstract：:Qualitative defects and resistances in 94 used gold foil electrodes were examined. The electrodes were divided into four groups of varying resistances and gold coating defects. Ten were randomly selected from each group to measure standard photopic electroretinograms (ERGs) in a normal subject. Ten new electrodes were...

journal_title：Vision research

authors： Wong VA,Graham SL

更新日期：1995-10-01 00:00:00

abstract：:Nanosecond transient spectroscopic measurements of the BATHO products formed from photolysis of bovine rhodopsin (RHO) and isorhodopsin (ISO) are discussed. BATHO absorption spectra of RHO and ISO differ slightly, but both pigments exhibit wavelength maxima near 560 nm. An additional transient absorption at 440 nm is ...

journal_title：Vision research

authors： Kliger DS,Horwitz JS,Lewis JW,Einterz CM

更新日期：1984-01-01 00:00:00

abstract：:In this work we report on a unique and ancient type of eye, in which the lower surface of the upper calcite lens units possessed an enigmatic central bulge making the dioptric apparatus similar to a bifocal lens. This eye belonged to the trilobite Dalmanitina socialis, which became extinct several hundred million year...

journal_title：Vision research

authors： Gál J,Horváth G,Clarkson EN,Haiman O

更新日期：2000-01-01 00:00:00

abstract：:Humans use smooth pursuit eye movements to track moving objects of interest. In order to track an object accurately, motion signals from the target have to be integrated and segmented from motion signals in the visual context. Most studies on pursuit eye movements used small visual targets against a featureless backgr...

journal_title：Vision research

authors： Debono K,Schütz AC,Spering M,Gegenfurtner KR

更新日期：2010-12-01 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：:Photic responsiveness of cells in the medial bank of the lateral suprasylvian cortex (Clare-Bishop area) was studied using a three-dimensional visual stimulator that reproduced two visual cues (motion disparity and change in size) for perception of three-dimensional motion of a visual stimulus. About one third of them...

journal_title：Vision research

authors： Toyama K,Komatsu Y,Kasai H,Fujii K,Umetani K

更新日期：1985-01-01 00:00:00

abstract：:Peripheral vision serves to direct our attention and fixation to objects of interest. This requires that the visual system be capable of accurately localizing peripherally presented targets having different spatial structures. The question we address is "to what extent does stimulus spatial structure influence the pre...

journal_title：Vision research

authors： Levi DM,Tripathy SP

更新日期：1996-12-01 00:00:00

abstract：:Studies of high-level models of visual object categorization have left unresolved issues of neurobiological relevance, including how features are extracted from the image and the role played by memory capacity in categorization performance. We compared the ability of a comprehensive set of models to match the categori...

journal_title：Vision research

authors： Peters RJ,Gabbiani F,Koch C

更新日期：2003-09-01 00:00:00

abstract：:Patients with retinitis pigmentosa (RP) show delayed inner retinal responses as measured by the cone ERG response to a 30 Hz stimulus. To determine the extent to which this delay results from abnormalities of cone phototransduction, cone ERGs to single flashes were obtained from 21 patients with RP and a model of cone...

journal_title：Vision research

authors： Hood DC,Birch DG

更新日期：1996-06-01 00:00:00