Role of motion integration in contour perception.

abstract：:Physiological and behavioral evidence shows that the directionally preponderant subcortical control of optokinetic nystagmus (OKN) in lower mammals is supplemented in higher mammals by bidirectional cortical control. It is hypothesized that this cortical control allows higher mammals to cope with the parallactic movem...

journal_title：Vision research

authors： Howard IP,Gonzalez EG

更新日期：1987-01-01 00:00:00

abstract：:The e-wave and a delayed-OFF increase in extracellular K+ concentration are both maximum in the distal half of the inner plexiform layer. These responses also have similar latency, time-course, intensity-dependence, surround properties, and sensitivity to tetrodotoxin. Current source-density analysis of the e-wave rev...

journal_title：Vision research

authors： Karwoski CJ,Newman EA

更新日期：1988-01-01 00:00:00

abstract：:As impaired S-cone function has been reported psychophysically this study assessed S-cone function during high altitude exposure using electroretinography (ERG) and investigated a possible association with severity of acute mountain sickness (AMS). This work is related to the Tübingen High Altitude Ophthalmology (THAO...

journal_title：Vision research

authors： Schatz A,Dominik Fischer M,Schommer K,Zrenner E,Bartz-Schmidt KU,Gekeler F,Willmann G

更新日期：2014-04-01 00:00:00

abstract：:Over the past few years, the very act of playing action video games has been shown to enhance several different aspects of visual selective attention, yet little is known about the neural mechanisms that mediate such attentional benefits. A review of the aspects of attention enhanced in action game players suggests th...

journal_title：Vision research

authors： Bavelier D,Achtman RL,Mani M,Föcker J

更新日期：2012-05-15 00:00:00

abstract：:In masked priming, a briefly presented prime can facilitate or inhibit responses to a subsequent target. In most instances, targets with an associated response that is congruent with the prime direction speed up reaction times to the target (a positive compatibility effect; PCE). However, under certain circumstances, ...

journal_title：Vision research

authors： Misirlisoy E,Hermens F,Stavrou M,Pennells J,Walker R

更新日期：2014-03-01 00:00:00

abstract：:The steady-state, monocular, accommodation response to sinusoidal grating targets (spatial frequencies 0.67, 2.0, 6.0 and 18 c/deg) at effective distances between 0.2 and 1.0 m was measured with a laser optometer, as a function of the grating modulation. In general, only a rather weak dependence of the response on mod...

journal_title：Vision research

authors： Tucker J,Charman WN,Ward PA

更新日期：1986-01-01 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：:Differential spatial displacement discrimination thresholds were determined for a configuration of three identical Gaussian modulated patches of sinusoidal grating presented with equal orientation and at threshold luminance contrast. The patches were arranged one above the other at equal spatial intervals. The orienta...

journal_title：Vision research

authors： Toet A,Koenderink JJ

更新日期：1988-01-01 00:00:00

abstract：:When an observer moves through the world, the motions of images on the retina provide information about the direction of observer motion, or "heading", and about the relative distance to surfaces in the scene. While it is simple to compute these quantities when the observer moves in a straight line, the computation be...

journal_title：Vision research

authors： Royden CS,Picone LJ

更新日期：2007-11-01 00:00:00

abstract：:The changes with age in the accommodation responses to dynamic stimuli can reveal useful information on the factors underlying presbyopia development. Analysis of the monocular accommodation responses of 19 normal observers (ages 18-49 years) to stimuli whose vergence varied sinusoidally with time at different tempora...

journal_title：Vision research

authors： Heron G,Charman WN

更新日期：2004-12-01 00:00:00

abstract：:Colored afterimages were obtained after the eye was exposed to the adapting field consisting of the figure-ground configuration of colored lights with the same hue and different saturation. When a colored patch was surrounded by a more saturated field, the color of the afterimage was similar to that of the previous pa...

journal_title：Vision research

authors： Takahashi S,Ejima Y,Akita M

更新日期：1988-01-01 00:00:00

abstract：:Although pictorial illusions have been used to study perception for a long time, the effects of such displays on the visual control of actions has recently been the matter of some debate. Evidence from a re-analysis of an earlier study is presented that suggests pictorial displays can exert opposite effects on percept...

journal_title：Vision research

authors： Haffenden AM,Goodale MA

更新日期：2000-01-01 00:00:00

abstract：:The study examines age-dependent changes of kynurenic acid (KYNA) content and kynurenine aminotransferases (KAT I and KAT II) celluar expression in the retinas of DBA/2J mice. Retinas were obtained from DBA/2J mice of different ages (3, 6 and 11 months). C57BL6 mice were used as controls. As measured with HPLC, KYNA c...

journal_title：Vision research

authors： Rejdak R,Kohler K,Kocki T,Shenk Y,Turski WA,Okuno E,Lehaci C,Zagorski Z,Zrenner E,Schuettauf F

更新日期：2004-03-01 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：:A simple electrophysiological method is described for determining the effective optical density of the intracellular pupil mechanism of insect photoreceptor cells. The method depends on the fact that the photoreceptors can not only be illuminated in the normal, orthodromic way, but also antidromically, i.e. from the b...

journal_title：Vision research

authors： Roebroek JG,Stavenga DG

更新日期：1990-01-01 00:00:00

abstract：:Static visual stimulus presented behind a moving pattern inhibits vection. On the other hand, the same static stimulus facilitates vection if it is located in front of the moving pattern. In this study, the effects of depth, eccentricity and size of the additional static stimulus on inhibition and facilitation of hori...

journal_title：Vision research

authors： Nakamura S

更新日期：2006-07-01 00:00:00

abstract：:The orientation of the median plane of the eye with respect to the head varies with gaze direction according to Listing's Law. The subjective vertical (SV), however, is known to be only partially affected by these involuntary variations of eye orientation. In order to learn more about the compensatory process underlyi...

journal_title：Vision research

authors： Haustein W,Mittelstaedt H

更新日期：1990-01-01 00:00:00

abstract：:Interocular transfer of a spatial frequency shift was obtained with equiluminous color gratings. Gratings which combined both color and luminance contrast yielded small aftereffects and no interocular transfer. Recent electrophysiological work has uncovered color-sensitive binocularly driven cells in visual cortex. Th...

journal_title：Vision research

authors： Favreau OE,Cavanagh P

更新日期：1983-01-01 00:00:00

abstract：:The present experiment uses a quadrature motion paradigm to investigate the motion correspondence cues used by young infants for coding the direction of motion of red/green isoluminant gratings. Three-month-old infants and adults were tested with 0.25 c/d luminance-modulated or red/green isoluminant gratings, either m...

journal_title：Vision research

authors： Lia B,Dobkins KR,Palmer J,Teller DY

更新日期：1999-05-01 00:00:00

abstract：:The minimum stimulus necessary to define motion is a change in position from one location to another in time, but past studies have provided evidence that the human motion system integrates motion over more than two positions. In this study we demonstrate strong sequential interactions affecting perceived direction in...

journal_title：Vision research

authors： Welch L,Macleod DI,Mckee SP

更新日期：1997-10-01 00:00:00

abstract：:To determine the physical size and global three-dimensional (3-D) shape of an object, retinal size and retinal disparity have to be scaled in accordance with the object's distance. We examined whether the distance used for scaling retinal disparity is the same as the distance used for scaling retinal size. Subjects ad...

journal_title：Vision research

authors： van Damme W,Brenner E

更新日期：1997-03-01 00:00:00

abstract：:We examined the performance of human observers to identify three-dimensional (3D) shape from motion induced by exploratory head movements. Subjects categorized 3D quadratic surfaces with randomly chosen shape but with a fixed amount of curvature in one of eight shape categories. Human observers had their best performa...

journal_title：Vision research

authors： van Damme WJ,van de Grind WA

更新日期：1993-07-01 00:00:00

abstract：:Collinear flankers increase the reports of the target present, an effect attributed to excitatory activation induced by the flankers on the target location, which consequently induces the filling-in effect (Polat & Sagi, 2007). Repetitive transcranial magnetic stimulation (rTMS) is a powerful tool for non-invasive inv...

journal_title：Vision research

authors： Amiaz R,Zomet A,Polat U

更新日期：2011-09-15 00:00:00

abstract：:A geometrical method of calculating retinal magnification factor at the limits of the retinal field, adjacent to the ora terminalis, is described. The method is applied to the eyes of 11 mammalian and avian species, using new anatomical measurements and data from the literature. In the human and monkey eye, magnificat...

journal_title：Vision research

authors： Holden AL,Hayes BP,Fitzke FW

更新日期：1987-01-01 00:00:00

abstract：:A visual illusion is reported which comprises the following: when a monitor with a moving constant velocity grating is swayed in front of a subject, the grating may be perceived as freezing or decelerating on the screen. This percept appears to depend on the magnitude and direction of the retinal grating velocity, rel...

journal_title：Vision research

authors： Mesland BS,Wertheim AH

更新日期：1996-10-01 00:00:00

abstract：:Microspectrophotometry (MSP) shows rhodopsin highly concentrated (about 3.0 mmol/l) in rod outer segments (ROS). Calculation of the in vivo absorption spectrum of human rhodopsin from such data reveals a striking failure to agree with the action spectrum of human rod vision. Agreement is good between the spectral dist...

journal_title：Vision research

authors： Alpern M,Fulton AB,Baker BN

更新日期：1987-01-01 00:00:00

abstract：:Adaptation to the simple visual displacement of prisms was compared to that for refractive lenses, which have a varied prismatic effect. Subjects were made myopic using contact lenses, then corrected using spectacle lenses. The effect on the perceived direction of a randomly located target was assessed from pointing b...

journal_title：Vision research

authors： Tuan KM,Jones R

更新日期：1997-07-01 00:00:00

abstract：:The number of axons in the optic nerve have been examined in rat pups raised by control or taurine-depleted mothers, at 21, 28 and 40 days after birth. Optic nerves from the mother rats were also studied. Taurine depletion of dams and some litters after weaning was achieved by in vivo treatment with guanidinoethyl sul...

journal_title：Vision research

authors： Lake N,Malik N,De Marte L

更新日期：1988-01-01 00:00:00

abstract：:Previous studies have shown that attention to a particular stimulus feature, such as direction of motion or color, enhances neuronal responses to unattended stimuli sharing that feature. We studied this effect psychophysically by measuring the strength of the motion aftereffect (MAE) induced by an unattended stimulus ...

journal_title：Vision research

authors： Boynton GM,Ciaramitaro VM,Arman AC

更新日期：2006-09-01 00:00:00

abstract：:Models based on spatial-frequency channels and local features provide alternative explanations for suprathreshold pattern discrimination. We compared psychophysical discrimination data with the predictions of the Wilson and Gelb channel model and three local-feature models. The features were peak-valley local contrast...

journal_title：Vision research

authors： Akutsu H,Legge GE

更新日期：1995-10-01 00:00:00