Timing sight and sound.

abstract：:Microglia dynamically prune synaptic contacts during development, and digest waste that accumulates in degeneration and aging. In many neurodegenerative diseases, microglial activation and phagocytosis gradually increase over months or years, with poorly defined initial triggering events. Here, we describe rapid retin...

journal_title：Vision research

authors： Levine ES,Zam A,Zhang P,Pechko A,Wang X,FitzGerald P,Pugh EN Jr,Zawadzki RJ,Burns ME

更新日期：2014-09-01 00:00:00

abstract：:Tse (2005) recently introduced a new class of illusory brightness changes where shifts of attention lead to shifts in perceived brightness across overlapping, transparent figures, under conditions of visual fixation. In the absence of endogenous attentional shifts, illusory brightness changes appear to shift from figu...

journal_title：Vision research

authors： Tse PU,Caplovitz GP,Hsieh PJ

更新日期：2006-10-01 00:00:00

abstract：:Non-Fourier motion is now commonplace in research on visual motion perception, yet lacks a computational framework. This paper examines this issue based on the observation that many non-Fourier motion stimuli have a simple characterization in the frequency domain, in terms of oriented power distributions that lie alon...

journal_title：Vision research

authors： Fleet DJ,Langley K

更新日期：1994-11-01 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

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：:Bisection is one of several spatial localization tasks that achieve hyperacuity performance levels. We find that optimal bisection thresholds, and hyperacuity tasks in general, are no better than might be expected from simple contrast detection and discrimination performance. The three-line bisection task can be descr...

journal_title：Vision research

authors： Carney T,Klein SA

更新日期：1999-02-01 00:00:00

abstract：:Evidence obtained using the dynamic grouping method has shown that the grouping of an object's connected surfaces has properties characteristic of a nonlinear dynamical system. When a surface's luminance changes, one of its boundaries is perceived moving across the surface. The direction of this dynamic grouping (DG) ...

journal_title：Vision research

authors： Hock HS,Schöner G

更新日期：2016-09-01 00:00:00

abstract：:Neurons in the vertebrate retina are interconnected by a complex network of chemical and electrical synapses which make it difficult to study the intrinsic biochemical and biophysical properties of individual cells. During the past decade, enzymatic methods have been developed for dissociating adult retinas into viabl...

journal_title：Vision research

authors： Lam DM,Ayoub GS

更新日期：1983-01-01 00:00:00

abstract：:In previous work, subjects looked at a target stabilized at the fovea, superimposed on a sinusiodally moving OKN stimulus. The stabilized target (no retinal-slip) suppressed OKN leaving residual eye movements that were often in counterphase with the OKN stimulus motion. In the present study we explored how this type o...

journal_title：Vision research

authors： Wyatt HJ,Pola J,Lustgarten M,Aksionoff E

更新日期：1995-10-01 00:00:00

abstract：:Fifty-three different 3D shapes were defined by sequences of 2D views (frames) of dots on a rotating 3D surface. (1) Subjects' accuracy of shape identifications dropped from over 90% to less than 10% when either the polarity of the stimulus dots was alternated from light-on-gray to dark-on-gray on successive frames or...

journal_title：Vision research

authors： Dosher BA,Landy MS,Sperling G

更新日期：1989-01-01 00:00:00

abstract：:The cornea of the goby Pomatoschistus minutus is iridescent. Spectral reflectance measurements show that the colour of the iridescence responds to light shifting to longer wavelengths when illuminated and shifting to shorter wavelengths when dark adapted. After 2-3 hr dark adaptation the iridescence is no longer visib...

journal_title：Vision research

authors： Shand J,Lythgoe JN

更新日期：1987-01-01 00:00:00

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：:Following optic nerve crush in the adult lizard Ctenophorus ornatus, most retinal ganglion cells regrow their axons into visual brain centres: however, the regenerated projections lack retinotopic order and the animals are blind via the experimental eye. Here we have used 3H-thymidine autoradiography to demonstrate th...

journal_title：Vision research

authors： Beazley LD,Tennant M,Stewart TM,Anstee SD

更新日期：1998-03-01 00:00:00

abstract：:Many studies have used static and non-biologically related stimuli to investigate bistable perception and found that the percept is usually dominated by their intrinsic nature with some influence of voluntary control from the viewer. Here we used a dynamic stimulus of a rotating human body, the silhouette spinner illu...

journal_title：Vision research

authors： Liu CH,Tzeng OJ,Hung DL,Tseng P,Juan CH

更新日期：2012-05-01 00:00:00

abstract：:What you see depends not only on where you are looking but also on where you will look next. The pre-saccadic attention shift is an automatic enhancement of visual sensitivity at the target of the next saccade. We investigated whether and how perceptual factors independent of the oculomotor plan modulate pre-saccadic ...

journal_title：Vision research

authors： White AL,Rolfs M,Carrasco M

更新日期：2013-06-07 00:00:00

abstract：:This study examined spatial-frequency effects on a motion-pooling process in which spatially distributed local one-dimensional motion signals are integrated into the perception of global two-dimensional motion. Motion pooling over two- to three-octave frequency differences was found to be nearly impossible when all Ga...

journal_title：Vision research

authors： Maruya K,Amano K,Nishida S

更新日期：2010-06-01 00:00:00

abstract：:The effects of abrupt increases and decreases of light in one part of the retina on sensitivity in an adjacent part of the retina were studied under low scotopic conditions near absolute threshold. The basic finding is that a brief annular surround decreases sensitivity to test spots occurring near the time of its ons...

journal_title：Vision research

authors： Pulos E,Makous W

更新日期：1982-01-01 00:00:00

abstract：:The widespread nature of diabetes affects all organ systems of an individual including the bone marrow. Long-term damage to the cellular and extracellular components of the bone marrow leads to a rapid decline in the bone marrow-hematopoietic stem/progenitor cells (HS/PCs) compartment. This review will highlight the i...

journal_title：Vision research

authors： Bhatwadekar AD,Duan Y,Korah M,Thinschmidt JS,Hu P,Leley SP,Caballero S,Shaw L,Busik J,Grant MB

更新日期：2017-10-01 00:00:00

abstract：:Three red/green blind observers (dichromats) performed a wavelength discrimination task over a wide range of intensity levels. As expected, discrimination failed in the entire red/green spectral range at the low intensities typically used in wavelength discrimination experiments, but at very high intensities (at or ab...

journal_title：Vision research

authors： McMahon MJ,MacLeod DI

更新日期：1998-04-01 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：: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：:Pupil responses to light are greatly influenced by initial pupil size. Small pupils, operating under photopic conditions, show tonic responses to step increases of light and high gains; thus the pupil is a good regulator of light. Large pupils, operating under mesopic or scotopic conditions show phasic responses, "pup...

journal_title：Vision research

authors： Sun F,Stark L

更新日期：1983-01-01 00:00:00

abstract：:Studies of spatial summation often use sinusoidal gratings with blurred edges. When the envelope is elongated (i) along the grating stripes and (ii) at right angles to the grating stripes, we refer to the stimuli as skunk-tails and tiger-tails respectively. Previous work [Polat & Tyler, 1999; Vision Research, 39, 887-...

journal_title：Vision research

authors： Meese TS,Hess RF

更新日期：2007-06-01 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：:In search for a singleton target, performance is considerably improved when the target and distractors repeat than when they switch roles, an effect called priming of pop-out or PoP (Maljkovic & Nakayama, 1994). Although this phenomenon has been replicated across a variety of dimensions, orientation PoP has proved to ...

journal_title：Vision research

authors： Lamy D,Yashar A,Ruderman L

更新日期：2013-04-05 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：: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：:Finger pointing is a natural human behavior frequently used to draw attention to specific parts of sensory input. Since this pointing behavior is likely preceded and/or accompanied by the deployment of attention by the pointing person, we hypothesize that pointing can be used as a natural means of providing self-repor...

journal_title：Vision research

authors： Jeck DM,Qin M,Egeth H,Niebur E

更新日期：2017-06-01 00:00:00

abstract：:In human subjects with peripheral retinal detachments, visual deficits are not restricted to the detached retina but are also present in the non-detached tissue. Based upon studies on a rabbit model of rhegmatogenous retinal detachment, we propose a glial cell-mediated mechanism of spread of retinal degeneration into ...

journal_title：Vision research

authors： Francke M,Faude F,Pannicke T,Uckermann O,Weick M,Wolburg H,Wiedemann P,Reichenbach A,Uhlmann S,Bringmann A

更新日期：2005-08-01 00:00:00

abstract：:An adaptive mechanism controls the strength of innervation to the two eyes independently. However, under some circumstances an adjustment in strength of innervation to one eye is generalized to the other. The coupling and uncoupling of the two eyes during saccadic motor learning was studied using the technique of intr...

journal_title：Vision research

authors： Albano JE,Marrero JA

更新日期：1995-12-01 00:00:00