Assimilation: asymmetry between brightness and darkness?

abstract：:Psychophysical studies of interactions between contours defined by different image attributes report that luminance-defined and illusory contours show little if any interaction. Because the contours defined by these attributes may vary in perceptual saliency, we employed the tilt aftereffect (TAE) and a cross-adaptati...

journal_title：Vision research

authors： Berkley MA,Debruyn B,Orban G

更新日期：1994-01-01 00:00:00

abstract：:Five experiments explored short-term memory and incidental learning for random visual spatio-temporal sequences. In each experiment, human observers saw samples of 8 Hz temporally-modulated 1D or 2D contrast noise sequences whose members were either uncorrelated across an entire 1-s long stimulus sequence, or comprise...

journal_title：Vision research

authors： Gold JM,Aizenman A,Bond SM,Sekuler R

更新日期：2014-06-01 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：:The ability to identify faces is of critical importance for normal social interactions. Previous evidence suggests that early visual deprivation may impair certain aspects of face recognition. The effects of strabismic amblyopia on face processing have not been investigated previously. In this study, a group of indivi...

journal_title：Vision research

authors： Cattaneo Z,Vecchi T,Monegato M,Pece A,Merabet LB,Carbon CC

更新日期：2013-03-22 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：:A modified version of the 'path finder' display consisting of many small oriented Gabor patches was used to study the joint contributions of spatial and temporal structures to shape perception. A two-interval forced-choice procedure measured detectability of curved 'paths' defined by orientation ('good continuation') ...

journal_title：Vision research

authors： Lee SH,Blake R

更新日期：2001-07-01 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：:The effects of the involuntary ocular oscillations on visual resolution was examined in 22 albinos and 11 idiopaths with congenital nystagmus. The idiopaths showed a linear relationship between the proportion of the slow phase spent at low velocities (less than or equal to deg/sec) and the log of the minimum angle of ...

journal_title：Vision research

authors： Abadi RV,Pascal E

更新日期：1991-01-01 00:00:00

abstract：:One primary function of spatial attention is to exclude external noise [e.g., Psychol. Sci. 11(2) (2000) 139], especially in the region of the target stimulus [J. Vis. 2(4) (2000) 312]. What is not known is the spatial profile of external noise exclusion in the vicinity of the target and how this depends upon attentio...

journal_title：Vision research

authors： Dosher BA,Liu SH,Blair N,Lu ZL

更新日期：2004-06-01 00:00:00

abstract：:Superfusion with 200 microM 2-amino-4-phosphonobutyrate (APB) of dark and chromatically adapted frog eyecups caused marked potentiation of the ERG OFF-response (d-wave). Blockade of the glycinergic synapses by strychnine did not change this effect at all. Blockade of the GABAergic synapses by picrotoxin slightly dimin...

journal_title：Vision research

authors： Popova E,Kupenova P,Vitanova L,Mitova L

更新日期：1995-07-01 00:00:00

abstract：:How can our percept spontaneously change while the observed object stays unchanged? This happens with ambiguous figures, like the Necker cube. Explanations favor either bottom-up factors in early visual processing, or top-down factors near awareness. The EEG has a high temporal resolution, so event related potentials ...

journal_title：Vision research

authors： Kornmeier J,Bach M

更新日期：2005-04-01 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：:Two alternative schemes have been proposed for coding the local direction of stimulus motion in the visual image. The "sequence discrimination" scheme (e.g. Barlow H.B. and Levick W. R., J. Physiol., Lond. 178, 477-504, 1965) uses sequential change in stimulus position over time to infer movement direction; the "spati...

journal_title：Vision research

authors： Mather G

更新日期：1984-01-01 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

abstract：:The influence of binocular disparate targets on the perceived visual direction of adjacent monocular targets has been termed "binocular capture". The magnitude of capture increases significantly with increasing vertical separation between monocular targets. This study sets out to elucidate the interaction between spat...

journal_title：Vision research

authors： Raghunandan A

更新日期：2011-12-08 00:00:00

abstract：:Genetic analyses were performed on five male children (approximately 3 years), two suspect color-normals and three suspects for congenital color vision deficiencies. These classifications were based on visually-evoked potential (VEP) responses to M- and L-cone-isolating stimuli obtained in a previous study when each s...

journal_title：Vision research

authors： Bieber ML,Werner JS,Knoblauch K,Neitz J,Neitz M

更新日期：1998-11-01 00:00:00

abstract：:Investigations of binocular visual direction have concentrated mainly on stationary objects. Eye positions were generally not measured and binocular fixation was assumed to be perfect. During the viewing of stationary objects, vergence errors are not negligible but small. During the viewing of moving objects, however,...

journal_title：Vision research

authors： Erkelens CJ,Van EE R

更新日期：1997-07-01 00:00:00

abstract：:We investigated temporal summation of the rods in a complete achromat, who lacks cone vision. Critical duration (tc) was estimated both at the achromat's preferred area of fixation and at an area 12 deg laterally in the nasal visual field. Comparable tc determinations were made in a normal trichromat. At background lu...

journal_title：Vision research

authors： Sharpe LT,Fach C,Nordby K

更新日期：1988-01-01 00:00:00

abstract：:We investigated the effect of adaptation on orientation discrimination using two experienced observers, then replicated the main effects using a total of 50 naïve subjects. Orientation discrimination around vertical improved after adaptation to either horizontal or vertical gratings, but was impaired by adaptation at ...

journal_title：Vision research

authors： Clifford CW,Wyatt AM,Arnold DH,Smith ST,Wenderoth P

更新日期：2001-01-15 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：:Neuroimaging studies have shown that the visual cortex of visually impaired humans is active during tactile tasks. We sought to determine if this cross-modal activation in the primary visual cortex is correlated with vision loss in individuals with retinitis pigmentosa (RP), an inherited degenerative photoreceptor dis...

journal_title：Vision research

authors： Cunningham SI,Weiland JD,Bao P,Lopez-Jaime GR,Tjan BS

更新日期：2015-06-01 00:00:00

abstract：:Visual adaptation is a critical and ubiquitous mechanism that occurs for any stimulus feature and involves a continuous adjustment of the neuronal contrast gain. These adjustments prevent our visual system from dropping in sensitivity for the prevailing ranges of stimulus features that are processed at a given time. I...

journal_title：Vision research

authors： Pavan A,Marotti RB,Campana G

更新日期：2012-06-01 00:00:00

abstract：:Trout lens external shape and internal refractive index gradient structure were measured and used to construct an optical lens model that predicts by ray tracing the average longitudinal spherical and chromatic aberration, focal length and image quality. The nearly spherical shape of the lens was measured from photogr...

journal_title：Vision research

authors： Jagger WS,Sands PJ

更新日期：1996-09-01 00:00:00

abstract：:We compared the thresholds and response properties of extracellularly recorded retinal ganglion cells (RGCs) in wild-type and rd1 mouse retinas to electrical stimulation of the retinal neural network. Retinas were stimulated in vitro with biphasic current pulses (1 ms/phase) applied with a 400-microm diameter, subreti...

journal_title：Vision research

authors： Jensen RJ,Rizzo JF 3rd

更新日期：2008-06-01 00:00:00

abstract：:The color vision of five saddle-backed tamarins (Saguinus fuscicollis) was studied. Behavioral tests of color discrimination and spectral sensitivity indicate that this species has a color vision polymorphism. Individual monkeys have either dichromatic or trichromatic color vision. Measurements of the spectral sensiti...

journal_title：Vision research

authors： Jacobs GH,Neitz J,Crognale M

更新日期：1987-01-01 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：:Light adaptation has been studied using both aperiodic and periodic stimuli. Two well-documented phenomena are described: the background-onset effect (from an aperiodic-stimulus tradition) and high-temporal-frequency linearity (from the periodic-stimulus tradition). These phenomena have been explained within two diffe...

journal_title：Vision research

authors： Graham N,Hood DC

更新日期：1992-07-01 00:00:00

abstract：:Light-induced protein interaction as part of the process of visual transduction in arthropods with rhabdomeric photoreceptors was investigated biochemically by using crayfish retina. Two kinds of retinal buffer soluble proteins (one of 40 kDa and the other of 46 kDa) were found to bind to the irradiated rhabdomeric me...

journal_title：Vision research

authors： Terakita A,Tsukahara Y,Hariyama T,Seki T,Tashiro H

更新日期：1993-12-01 00:00:00

abstract：:A wide range of rest/stimulus cycle durations (40-360 sec) is reported to have been used by various groups for MRI neuroactivation studies of the visual cortex. In this paper we demonstrate a clear habituation-like response for longer cycle durations which results in a halving of apparent activation between cycle dura...

journal_title：Vision research

authors： Condon B,McFadzean R,Hadley DM,Bradnam MS,Shahani U

更新日期：1997-05-01 00:00:00

abstract：:In a series of experiments we compared orientation discrimination performance for Gabor stimuli in which the stimulus profile was either matched to the receptive field profile of single V1 simple cells ('simple'), or in which the carrier and envelope orientations were different ('tigertails'). In the first Experiment,...

journal_title：Vision research

authors： Morgan MJ,Mason AJ,Baldassi S

更新日期：2000-01-01 00:00:00