The lateral posterior-pulvinar complex modulation of stimulus-dependent oscillations in the cat visual cortex.

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：:A counterphase-modulated (i.e. contrast reversing) pattern will affect hypothetical neural elements sensitive to motion as well as hypothetical elements sensitive to changes in contrast and other elements sensitive to local luminance. Attempts to describe visual evoked potentials (VEPs) to contrast reversal entirely i...

journal_title：Vision research

authors： Spekreijse H,Dagnelie G,Maier J,Regan D

更新日期：1985-01-01 00:00:00

abstract：:The apparent motion of a discretely displaced complex waveform with a periodic contrast modulation or "beat" of frequency f and sinusoidal components of frequencies 3f and 4f was examined at various interstimulus intervals (ISIs). At short ISIs perception of motion of both the beat and an aliased component of the wave...

journal_title：Vision research

authors： Hammett ST,Ledgeway T,Smith AT

更新日期：1993-05-01 00:00:00

abstract：:Photoreceptors of adult and larval zebrafish were assayed by microspectrophotometry to characterize their visual pigments, and to determine when the visual pigments first appear during development. Short single cone outer segments contained a pigment with a lambdamax near 417 nm. Long single cones and long members of ...

journal_title：Vision research

authors： Nawrocki L,BreMiller R,Streisinger G,Kaplan M

更新日期：1985-01-01 00:00:00

abstract：:With luminance gratings, psychophysical thresholds for detecting a small increase in the contrast of a weak 'pedestal' grating are 2-3 times lower than for detection of a grating when the pedestal is absent. This is the 'dipper effect'--a reliable improvement whose interpretation remains controversial. Analogies betwe...

journal_title：Vision research

authors： Georgeson MA,Yates TA,Schofield AJ

更新日期：2008-09-01 00:00:00

abstract：:A model of darkness induction based on a neural filling-in mechanism is proposed. The model borrows principles from both Land's Retinex theory and BCS/FCS filling-in model of Grossberg and colleagues. The main novel assumption of the induction model is that darkness filling-in signals, which originate at luminance bor...

journal_title：Vision research

authors： Rudd ME,Arrington KF

更新日期：2001-12-01 00:00:00

abstract：:An outline drawing often serves as an excellent depiction of a visual scene. Somehow, our visual system can form two- and three-dimensional percepts solely from one-dimensional contour information. In mathematics, contour closure plays a key role in bridging this dimensional gap, however in perception the link between...

journal_title：Vision research

authors： Elder J,Zucker S

更新日期：1993-05-01 00:00:00

abstract：:Outside the fovea, the visual system pools features of adjacent stimuli. Left or right of fixation the tilt of an almost horizontal Gabor pattern becomes difficult to classify when horizontal Gabors appear above and below it. Classification is even harder when flankers are to the left and right of the target. With all...

journal_title：Vision research

authors： Mareschal I,Morgan MJ,Solomon JA

更新日期：2010-04-07 00:00:00

abstract：:It has been shown that the perceived direction of a plaid with components of unequal contrast is biased towards the direction of the higher-contrast component [Stone, L. S., Watson, A. B., & Mulligan, J. B. (1990). Effect of contrast on the perceived direction of a moving plaid. Vision Research 30, 1049-1067]. It was ...

journal_title：Vision research

authors： Champion RA,Hammett ST,Thompson PG

更新日期：2007-02-01 00:00:00

abstract：:There is an ongoing debate on whether binocular rivalry involves competition among monocular cells or binocular cells. We investigated this issue psychophysically with two specially designed test stimuli. One test stimulus contained monocular motion signals but greatly reduced binocular motion signals, while the other...

journal_title：Vision research

authors： Meng X,Chen Y,Qian N

更新日期：2004-01-01 00:00:00

abstract：:To decouple interocular suppression and binocular summation we varied the relative phase of mask and target in a 2IFC contrast-masking paradigm. In Experiment I, dichoptic mask gratings had the same orientation and spatial frequency as the target. For in-phase masking, suppression was strong (a log-log slope of approx...

journal_title：Vision research

authors： Baker DH,Meese TS

更新日期：2007-11-01 00:00:00

abstract：:Random-dot cinematograms comprising many different, spatially intermingled local motion vectors can produce a percept of global coherent motion in a single direction. Thresholds for discriminating the direction of global motion were measured under various conditions. Discrimination thresholds increased with the width ...

journal_title：Vision research

authors： Watamaniuk SN,Sekuler R

更新日期：1992-12-01 00:00:00

abstract：:During scene perception our eyes generate complex sequences of fixations. Predictors of fixation locations are bottom-up factors such as luminance contrast, top-down factors like viewing instruction, and systematic biases, e.g., the tendency to place fixations near the center of an image. However, comparatively little...

journal_title：Vision research

authors： Rothkegel LO,Trukenbrod HA,Schütt HH,Wichmann FA,Engbert R

更新日期：2016-12-01 00:00:00

abstract：:In the present study, discrete trial familiarization/novelty techniques were used to study lightness constancy in 4-month-old infants. The test stimuli were real objects (paper smiley faces) of two different reflectances, dark gray (17% reflectance) and light gray (54% reflectance). In Experiment 1, the test stimuli w...

journal_title：Vision research

authors： Chien SH,Bronson-Castain K,Palmer J,Teller DY

更新日期：2006-06-01 00:00:00

abstract：:In contrast to the classical findings of lightness constancy, recent psychophysical studies show the strong dependency of the perceived reflectance of a surface on the structure of the natural illumination. The present study examined this inconstancy for systematic variations in the light field and an image-based expl...

journal_title：Vision research

authors： Motoyoshi I,Matoba H

更新日期：2012-01-15 00:00:00

abstract：:Most humans seem to demonstrate astonishingly high levels of skill in face processing if one considers the sophisticated level of fine-tuned discrimination that face recognition requires. However, numerous studies now indicate that the ability to process faces is not as fundamental as once thought and that performance...

journal_title：Vision research

authors： Devue C,Barsics C

更新日期：2016-10-01 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 contrast matching function (CMF) is the reciprocal of test contrast that perceptually matches the contrast of standard pattern, measured as a function of test spatial frequency (SF). Achromatic CMFs usually flatten as the contrast of the standard is raised, and are broader than the achromatic, bandpass, contrast s...

journal_title：Vision research

authors： Vimal RL

更新日期：2000-01-01 00:00:00

abstract：:Mach bands are illusory bright and dark bands seen where a luminance plateau meets a ramp, as in half-shadows or penumbras. A tremendous amount of work has been devoted to studying the psychophysics and the potential underlying neural circuitry concerning this phenomenon. A number of theoretical models also have been ...

journal_title：Vision research

authors： Pessoa L

更新日期：1996-10-01 00:00:00

abstract：:Saccade latencies are known to increase for targets presented close to fixation. Recently, it was shown that not only target eccentricity, but the size of a proximal saccade target also plays a crucial role: latencies increase rapidly with increasing target size. Interestingly, these latency increases are greater than...

journal_title：Vision research

authors： De Vries JP,Azadi R,Harwood MR

更新日期：2016-12-01 00:00:00

abstract：:The NMDA subtype of glutamate receptor and its co-agonist d-serine play a key role in synaptic function in the central nervous system (CNS), including visual cortex and retina. In retinal diseases such as glaucoma and macular degeneration, a loss of vision arises from malfunction of retinal cells, resulting in a gluta...

journal_title：Vision research

authors： Staubli U,Rangel-Diaz N,Alcantara M,Li YX,Yang JY,Zhang KM,Foster AC

更新日期：2016-10-01 00:00:00

abstract：:Western blot analysis of 100,000 g supernatant of rat retina using a polyclonal anti-Ca2+/ calmodulin-dependent protein kinase IV (CaM-kinase IV) antibody revealed an immunoreactive mass of 35 kDa, termed reticalmin. Lower amount of a isoform of CaM-kinase IV was also expressed in rat retina. Reticalmin did not react ...

journal_title：Vision research

authors： Hirooka K,Tokuda M,Tsumura T,Ahmed BY,Itano T,Matsui H,Konishi R,Hasegawa E,Okuno S,Kitani T,Fujisawa H,Hatase O

更新日期：1997-08-01 00:00:00

abstract：:The wave-front aberration of the human eye was measured for eight subjects using a spatially resolved refractometer (a psychophysical ray-tracing test). The eyes were undilated and presented with accommodative stimuli varying from 0 to -6 diopters. Monochromatic wave-front aberrations tend to increase with increasing ...

journal_title：Vision research

authors： He JC,Burns SA,Marcos S

更新日期：2000-01-01 00:00:00

abstract：:We have examined the ability of observers to determine the direction of movement of a variety of colored plaid patterns. When the two plaid components are of unequal spatial frequency or of unequal luminance or chromatic contrast, observers judge the direction of movement incorrectly. These errors are correlated with ...

journal_title：Vision research

authors： Kool FL,De Valois KK

更新日期：1992-04-01 00:00:00

abstract：:It has been proposed that there is a perceptual compensation for the difference between the speeds of light and sound. We examined this possibility using a range of auditory-visual tasks, in which performance depends on the relative timing of auditory and visual information, and manipulated viewing distance to test fo...

journal_title：Vision research

authors： Arnold DH,Johnston A,Nishida S

更新日期：2005-05-01 00:00:00

abstract：:Psychophysical measures of hue (wavelength) discrimination and spectral sensitivity were collected over a 3-year-period on a rhesus monkey whose right eye had been exposed to intense blue light 10 years prior and had shown a pronounced loss of blue sensitivity in an increment-threshold, spectral-sensitivity task. Hue ...

journal_title：Vision research

authors： Wright AA,Sperling HG,Mills SL

更新日期：1987-01-01 00:00:00

abstract：:Two moving random-pixel arrays (RPAs) were presented simultaneously in the same target field. These RPAs are perceived as two superimposed transparent moving sheets. Although two directions are perceived simultaneously during stimulus presentation, the movement aftereffect (MAE) is unidirectional. The visual system av...

journal_title：Vision research

authors： Verstraten FA,Fredericksen RE,van de Grind WA

更新日期：1994-02-01 00:00:00

abstract：:It is well known that object recognition requires spatial frequencies exceeding some critical cutoff value. People with central scotomas who rely on peripheral vision have substantial difficulty with reading and face recognition. Deficiencies of pattern recognition in peripheral vision, might result in higher cutoff r...

journal_title：Vision research

authors： Kwon M,Legge GE

更新日期：2011-09-15 00:00:00

abstract：:MIRAGE, a theory for the primitive coding of the (1D) spatial distribution of luminance changes by the human visual system is developed from a theoretical examination of the practical problems associated with the characterization of such changes. The main novel feature of the theory is that the multiplicity of spatial...

journal_title：Vision research

authors： Watt RJ,Morgan MJ

更新日期：1985-01-01 00:00:00

abstract：:Increment thresholds were measured over a range of adapting illuminances using a modified automated static perimeter. The data were fitted to a threshold versus intensity model (logT - logT(0) + log((A + A(0))/A(0))n) and the values logT(0) and logA(0) estimated. The effect of eccentricity and age on logT(0) and logA(...

journal_title：Vision research

authors： Herse P

更新日期：2005-02-01 00:00:00