Adaptation to objects in the lateral occipital complex (LOC): shape or semantics?

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：:In order to complement previous studies of contrast detection, we have examined the effects of three stimulus variables (spatial frequency, retinal illuminance, retinal locus) and one visual disorder (amblyopia) on contrast discrimination. Although each factor has a profound effect on the detection of gratings on othe...

journal_title：Vision research

authors： Bradley A,Ohzawa I

更新日期：1986-01-01 00:00:00

abstract：:In the past 20 years, there has been a great advancement in knowledge pertaining to compliance with amblyopia treatments. The occlusion dose monitor introduced quantitative monitoring methods in patching, which sparked our initial understanding of the dose-response relationship for patching amblyopia treatment. This r...

journal_title：Vision research

authors： Wang J

更新日期：2015-09-01 00:00:00

abstract：:We describe a model and simulations of boundary assignment by cortical neurons, a process that assigns edges to figural image regions, as opposed to the background regions on the other side of the edge. The model is composed of several areas, resembling the hierarchical feedforward-feedback organization of areas in th...

journal_title：Vision research

authors： Jehee JF,Lamme VA,Roelfsema PR

更新日期：2007-04-01 00:00:00

abstract：:Several characteristic of aftereffects (especially the motion aftereffect) depend upon the square root of the time spent adapting. The same parameters are here examined for the contrast threshold elevation aftereffect. The time taken to recover is shown to be well predicted by root adaptation time (beyond a minimum du...

journal_title：Vision research

authors： Rose D

更新日期：1992-09-01 00:00:00

abstract：:Electrophysiological recording demonstrated that visuo-tectal projections are topographically organised after optic nerve regeneration in aged Xenopus laevis. 3H-thymidine autoradiography confirmed previous reports [Taylor, Lack, & Easter, Eur. Journal of Neuroscience 1 (1989) 626-638] that cell division had already c...

journal_title：Vision research

authors： Beaver RS,Dunlop SA,Harman AM,Stirling RV,Easter SS,Roberts JD,Beazley LD

更新日期：2001-06-01 00:00:00

abstract：:Previously we reported that recently myopic children accommodated insufficiently to blur induced by negative lenses. The purpose of the present study was to relate changes in blur-driven accommodation to myopia development in children. Refractive errors and the accommodation response function (ARF) were measured in 23...

journal_title：Vision research

authors： Gwiazda J,Bauer J,Thorn F,Held R

更新日期：1995-05-01 00:00:00

abstract：:While it is known that scleral search coils-measuring the rotation of the eye globe--and modern, video based eye trackers-tracking the center of the pupil and the corneal reflection (CR)--produce signals with different properties, the mechanisms behind the differences are less investigated. We measure how the size of ...

journal_title：Vision research

authors： Nyström M,Hooge I,Andersson R

更新日期：2016-04-01 00:00:00

abstract：:The striate cortex of macaque monkeys contains an array of patches which stain heavily for the enzyme cytochrome oxidase (CO blobs). Cells inside and outside these blobs are often described as belonging to two distinct populations or streams. In order to better understand the function of the CO blobs, we measured the ...

journal_title：Vision research

authors： Edwards DP,Purpura KP,Kaplan E

更新日期：1995-06-01 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：:The association between perceived visual direction and retinal location has been considered to be specified at birth and unmodifiable. We found that small changes occurred in the visual direction associated with a peripheral retinal location when the amplitudes of saccadic eye movements to a target imaged at that loca...

journal_title：Vision research

authors： Moidell BG,Bedell HE

更新日期：1988-01-01 00:00:00

abstract：:The influence of rod light and dark adaptation upon cone mediated spatial acuity was studied in the near parafoveal retina of normal human observers. The luminance just necessary to detect squarewave test gratings of variable frequency provided an index of spatial acuity. Such thresholds were determined in the presenc...

journal_title：Vision research

authors： Naarendorp F,Denny N,Frumkes TE

更新日期：1988-01-01 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：:An analytical description of the point spread function (PSF) for human foveal vision, together with its closed form two-dimensional Fourier transform, the modulation transfer function (MTF), is proposed. It also possesses an analytical line spread function (LSF) counterpart. It fits to both PSF and MTF experimental da...

journal_title：Vision research

authors： IJspeert JK,van den Berg TJ,Spekreijse H

更新日期：1993-01-01 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：:Recombinant adeno-associated virus (rAAV) is widely used in retinal gene therapy. Enhanced rAAV transduction may be important for better therapeutic effects in some retinal gene therapies. In this study, we examined the effects of adenovirus 5 (Ad5) on retina transduction mediated by rAAV2. Our results provide the fir...

journal_title：Vision research

authors： Wu J,Zhang S,Wu X,Dong X,Xu P,Liu X,Li C,Huang Q

更新日期：2008-07-01 00:00:00

abstract：:Different electrodes and stimulus protocols commonly used for electroretinography in rodent eyes were compared for convenience of use, degree of damage to corneal epithelium, and for magnitude of amplitude, reproducibility, left versus right eye accuracy, and reliability of recorded parameters of the flash electroreti...

journal_title：Vision research

authors： Bayer AU,Cook P,Brodie SE,Maag KP,Mittag T

更新日期：2001-08-01 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 selectivities of neurons in primary visual cortex are often considered to be adapted to the statistics of natural images. Accordingly, simple cell-like tuning emerges when unsupervised learning models that seek sparse representations of input probabilities are trained on natural scenes. However, orientation tuning...

journal_title：Vision research

authors： Hsu AS,Dayan P

更新日期：2007-10-01 00:00:00

abstract：:We describe a technique, involving the projection of low power laser beams through excised lenses in solution, that makes it possible to measure photographically lens optical aberrations. Preliminary work indicates that the laser method can be used in combination with lens culture experiments as a means of monitoring ...

journal_title：Vision research

authors： Sivak JG,Gershon D,Dovrat A,Weerheim J

更新日期：1986-01-01 00:00:00

abstract：:Three experiments examined the effects of using informative verbal and pictorial cues on participants' abilities to perform visual search. By providing participants with more time to encode the cues than had been used previously, all three experiments revealed long-lasting pictorially cued search advantages that stabi...

journal_title：Vision research

authors： Knapp WH 3rd,Abrams RA

更新日期：2012-10-15 00:00:00

abstract：:Some blind humans use sound to navigate by emitting mouth-clicks and listening to the echoes that reflect from silent objects and surfaces in their surroundings. These echoes contain information about the size, shape, location, and material properties of objects. Here we present results from an fMRI experiment that in...

journal_title：Vision research

authors： Milne JL,Arnott SR,Kish D,Goodale MA,Thaler L

更新日期：2015-04-01 00:00:00

abstract：:At temporal frequencies between approximately 30 and 70 Hz, the flicker electroretinogram (ERG) of the cone system can exhibit an alternation in response amplitude from cycle to cycle that has been termed synchronous period doubling. This phenomenon has been attributed to a nonlinear feedback mechanism at an early ret...

journal_title：Vision research

authors： Alexander KR,Raghuram A

更新日期：2007-02-01 00:00:00

abstract：:We recently found that the Rb protein is important for the regulation of retinal progenitor cell proliferation and rod photoreceptor development in the mouse retina. These two functions are separate for Rb and in this study we further characterize the role of Rb in retinal development. At postnatal day 12 in the retin...

journal_title：Vision research

authors： Donovan SL,Dyer MA

更新日期：2004-12-01 00:00:00

abstract：:Inhibition-of-return is the process by which visual search for an object positioned among others is biased toward novel rather than previously inspected items. It is thought to occur automatically and to increase search efficiency. We examined this phenomenon by studying the facilitative and inhibitory effects of loca...

journal_title：Vision research

authors： Wright RD,Richard CM

更新日期：2000-01-01 00:00:00

abstract：:Two mechanisms, one for the detection of fast, and the other for slow movement of a sinusoidal grating are identified, and investigated under central, parafoveal, and peripheral viewing conditions. The fast movement data is considered in terms of the Reichardt model, in which signals from two adjacent inputs are cross...

journal_title：Vision research

authors： Murray I,MacCana F,Kulikowski JJ

更新日期：1983-01-01 00:00:00

abstract：:Reaction times for detecting sinusoidal gratings depend jointly on grating contrast and spatial frequency. We examine whether the effect of spatial frequency results from low-pass filtering in a single channel or reflects processing of different frequencies by two or more different processing streams. Observers perfor...

journal_title：Vision research

authors： Thomas JP,Fagerholm P,Bonnet C

更新日期：1999-05-01 00:00:00

abstract：:During reading, binocular visual input results in superior performance and is particularly important in the pre-processing of parafoveal text prior to direct fixation. It is not yet clear whether binocular vision in the parafovea is necessary for accurate saccadic targeting, or for efficient pre-processing of upcoming...

journal_title：Vision research

authors： Nikolova M,Jainta S,Blythe HI,Liversedge SP

更新日期：2018-04-01 00:00:00

abstract：:Receptive fields formed by ganglion cells were measured simultaneously in time and space in the adult and tadpole retinas. The spatio-temporal receptive-fields (STRFs) were measured by cross-correlating the spatio-temporal white-noise stimulus with the cells' spike discharges. Crosscorrelation was made photographicall...

journal_title：Vision research

authors： Shingai R,Hida E,Naka K

更新日期：1983-01-01 00:00:00

abstract：:Some studies have reported deficits in amblyopia for global form and motion integration, whereas other studies have shown global integration of form and motion information to be normal in amblyopia. Here, we attempt to resolve this discrepancy by showing that amblyopes only exhibit selective performance deficits on gl...

journal_title：Vision research

authors： Mansouri B,Hess RF

更新日期：2006-11-01 00:00:00