Rayleigh matches and unique green.

abstract：:It has been shown that in the initial stages of motion processing, the ON and OFF pathways stay more or less separated. There is evidence that this distinction between motion signals from opposite contrast polarities remains at least partly intact in the integration stage of local motion information. At the same time,...

journal_title：Vision research

authors： van der Smagt MJ,Breij EC,van de Grind WA

更新日期：2000-01-01 00:00:00

abstract：:Loss of photoreceptors during retinal degeneration leads to blindness, but information can be reintroduced into the visual system using electrical stimulation of the remaining retinal neurons. Subretinal photovoltaic arrays convert pulsed illumination into pulsed electric current to stimulate the inner retinal neurons...

journal_title：Vision research

authors： Lorach H,Goetz G,Mandel Y,Lei X,Galambos L,Kamins TI,Mathieson K,Huie P,Dalal R,Harris JS,Palanker D

更新日期：2015-06-01 00:00:00

abstract：:The transient system deficit hypothesis (TSDH) of specific reading disability [Percept. Psychophys. 40 (1986) 440] remains contentious. As part of a study examining multiple measures of transient and sustained system function, heterochromatic flicker matching (HFM) and brightness matching (HBM) were assessed in 30 poo...

journal_title：Vision research

authors： Floyd RA,Dain SJ,Elliott RT

更新日期：2004-01-01 00:00:00

abstract：:The nominally steady-state accommodation response exhibits temporal variations which can be characterized by two dominant regions of activity; a low frequency component (LFC < 0.6 Hz) and a high frequency component (1.0 < or = HFC < or = 2.1 Hz). There is no consensus as to the relative contribution made by each of th...

journal_title：Vision research

authors： Gray LS,Winn B,Gilmartin B

更新日期：1993-10-01 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：:The absorption of a photon by a photoreceptor triggers a small voltage fluctuation termed the 'bump'. Here, in the housefly, I introduce the bispectrum of photoreceptor noise to characterise the bump under dim light. The bispectrum provides explicit phase information and is not contaminated by Gaussian background nois...

journal_title：Vision research

authors： Burton BG

更新日期：2006-03-01 00:00:00

abstract：:Thresholds for the detection of rotation and divergence in the presence of a translational component in sparse random dot patterns are determined for human observers and two computer algorithms. The algorithms only make use of local velocity directions and not of local velocity magnitude (speed). The results show that...

journal_title：Vision research

authors： Kappers AM,te Pas SF,Koenderink JJ,van Doorn AJ

更新日期：1996-11-01 00:00:00

abstract：:Monocular, steady-state accommodative responses were measured as a function of spatial frequency of simple sinusoidal gratings presented at high contrast and target vergence levels in amblyopes, as well as in strabismics without amblyopia and in visually-normal control subjects. In general, spatial frequency dependenc...

journal_title：Vision research

authors： Ciuffreda KJ,Hokoda SC

更新日期：1983-01-01 00:00:00

abstract：:Retinal prostheses attempt to restore some amount of vision to totally blind patients. Vision evoked this way will be however severely constrained because of several factors (e.g., size of the implanted device, number of stimulating contacts, etc.). We used simulations of artificial vision to study how such restrictio...

journal_title：Vision research

authors： Pérez Fornos A,Sommerhalder J,Pittard A,Safran AB,Pelizzone M

更新日期：2008-07-01 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 spectral sensitivity of single units in the torus semicircularis (TS) of small (< 30 g) and large (> 60 g) juvenile rainbow trout, Oncorhynchus mykiss, was investigated. All examined units (n = 39) showed inputs from the long and medium cone mechanisms. In addition, a majority of units (28 of 39) in both size grou...

journal_title：Vision research

authors： Coughlin DJ,Hawryshyn CW

更新日期：1994-06-01 00:00:00

abstract：:The kinetics of synaptic transfer from photoreceptors to second order neurons have been determined in the retina of the snapping turtle. Analysis of the fluctuations resulting from the random release of cone transmitter molecules reveals that the action on postsynaptic channels of the depolarizing bipolar cells is pro...

journal_title：Vision research

authors： Copenhagen DR,Ashmore JF,Schnapf JK

更新日期：1983-01-01 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：: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：:High order aberrations have been suggested to play a role in determining the direction of accommodation. We have explored the effect of retinal blur induced by high order aberrations on dynamic accommodation by measuring the accommodative response to sinusoidal variations in accommodative demand (1-3D). The targets we...

journal_title：Vision research

authors： Gambra E,Wang Y,Yuan J,Kruger PB,Marcos S

更新日期：2010-09-15 00:00:00

abstract：:In a rapid categorisation task, monkeys and humans had to detect a target (animal or food) in briefly flashed (32 ms) and previously unseen natural images. Removing colour cues had very little effect on average performance. Impairments were restricted to a mild accuracy drop (in some human subjects) and a small reacti...

journal_title：Vision research

authors： Delorme A,Richard G,Fabre-Thorpe M

更新日期：2000-01-01 00:00:00

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：:Perceptual learning is often interpreted as learning of fine stimulus templates. However, we have proposed that perceptual learning is more than template learning, in that more abstract statistical rules may have been learned, so that learning can transfer to stimuli at different precisions. Here we provide new eviden...

journal_title：Vision research

authors： Xie XY,Yu C

更新日期：2019-03-01 00:00:00

abstract：:When each eye is confronted with a dissimilar stimulus, the percept will generally alternate between the two. This phenomenon is known as binocular rivalry. Although binocular rivalry occurs at locations where targets overlap spatially, the area surrounding rivalrous targets can modulate their dominance. Here we show ...

journal_title：Vision research

authors： Paffen CL,te Pas SF,Kanai R,van der Smagt MJ,Verstraten FA

更新日期：2004-01-01 00:00:00

abstract：:Sensitivity to the sudden displacement (phase shift) of a single monocularly presented sinusoidal grating is increased when a static grating of similar spatial frequency is presented to the same eye. If the static grating is presented to the other eye instead sensitivity is, at best, halved. This demonstration implies...

journal_title：Vision research

authors： Badcock DR,Derrington AM

更新日期：1987-01-01 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：:Following an extensive single subject pilot study 12 Ss viewed a continuously cycling (3 Hz), two stimulus, apparent motion (AM) display. The "AM breakdown effect" was utilised to gather visual evoked potentials (VEPs) from sites O1, O2, T5, T6, P3, and P4 during periods in which the display elicited either: the perce...

journal_title：Vision research

authors： Manning ML,Finlay DC,Fenelon B

更新日期：1988-01-01 00:00:00

abstract：:Human observers show remarkable efficiency in statistical estimation; they are able, for instance, to estimate the mean size of visual objects, even if their number exceeds the capacity limits of focused attention. This ability has been understood as the result of a distinct mode of attention, i.e. distributed attenti...

journal_title：Vision research

authors： Baijal S,Nakatani C,van Leeuwen C,Srinivasan N

更新日期：2013-06-07 00:00:00

abstract：:Thresholds for detecting the angle of rotation of vertical symmetrical patterns containing few or no explicit vertical or horizontal contours were found to be almost as low as those for an actual vertical line extending approximately the same range. This hyperacuity performance, which we refer to as implicit orientati...

journal_title：Vision research

authors： Li W,Westheimer G

更新日期：1997-03-01 00:00:00

abstract：:The ability to rapidly and accurately recognize visual stimuli represents a significant computational challenge. Yet, despite such complexity, the primate brain manages this task effortlessly. How it does so remains largely a mystery. The study of visual perception and object recognition was once limited to investigat...

journal_title：Vision research

authors： Ungerleider LG,Bell AH

更新日期：2011-04-13 00:00:00

abstract：:A variable pupil generally regulates the amount of incoming light available for image formation on the retina. However, some of the semi-aquatic snakes (North American Gartersnakes, Thamnophis) that forage in relatively low light conditions reduce the pupil aperture in response to submergence underwater at the expense...

journal_title：Vision research

authors： Fontenot CL Jr

更新日期：2008-07-01 00:00:00

abstract：:The present study showed that at equiluminance the critical duration of temporal integration became shorter as the chromatic saturation of an adaptation field was increased. These results suggest that the chromatic coding system (which is assumed to posses poorer temporal resolution or larger temporal integration time...

journal_title：Vision research

authors： Kawabata Y

更新日期：1994-04-01 00:00:00

abstract：:Spatio-temporal boundary formation (SBF) refers to a perceptual process responsible for perception of moving, bounded surfaces from sequential changes in spatially separated local elements. Previous research has indicated that this process produces perception of global form, continuous boundaries and global motion fro...

journal_title：Vision research

authors： Shipley TF,Kellman PJ

更新日期：1997-05-01 00:00:00

abstract：:Flanking lateral masks enhance or weaken the detection of a low-contrast visual target. This effect depends on the target-to-mask distance. An improvement of stimulus detection can also be observed when participants imagine (i.e., retrieve from memory) the previously presented masks. In this double-blind, placebo-cont...

journal_title：Vision research

authors： Kéri S

更新日期：2015-01-01 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