abstract：:To investigate effects of visual experience versus preprogrammed mechanisms on visual development, we used multiple regression analysis to determine the extent to which a variety of variables (that differ in the extent to which they are tied to visual experience) predict luminance and chromatic (red/green) contrast se...

journal_title：Journal of vision

authors： Dobkins KR,Bosworth RG,McCleery JP

更新日期：2009-09-30 00:00:00

abstract：:We investigated how the visual-motor system recruits a novel visual feedback cue for a manual control task. We presented conditions in which an arbitrary cue (color) was coupled with task-relevant feedback (position or velocity), and measured the effect of the novel cue on performance. Participants used a joystick to ...

journal_title：Journal of vision

authors： Li WO,Saunders JA,Li L

更新日期：2009-09-10 00:00:00

abstract：:The saccadic distractor effect, in which irrelevant stimuli delay saccades to target stimuli, is a popular tool for investigating saccadic competition. Here, we outline the main components of a competition framework to account for the temporal dynamics of the distractor effect, inspired by race models of saccade gener...

journal_title：Journal of vision

authors： Bompas A,Sumner P

更新日期：2009-08-28 00:00:00

abstract：:This paper explores the nature of the representations used for computing mean visual size of an array of visual objects of different sizes. In Experiment 1 we found that mean size judgments are accurately made even when the individual objects (circles) upon which those judgments were based were distributed between the...

journal_title：Journal of vision

authors： Joo SJ,Shin K,Chong SC,Blake R

更新日期：2009-08-19 00:00:00

abstract：:The pedestal effect is the improvement in the detectability of a sinusoidal grating in the presence of another grating of the same orientation, spatial frequency, and phase-usually called the pedestal. Recent evidence has demonstrated that the pedestal effect is differently modified by spectrally flat and notch-filter...

journal_title：Journal of vision

authors： Goris RL,Wichmann FA,Henning GB

更新日期：2009-07-31 00:00:00

abstract：:Recent psychophysical studies have shown that perceived timings of events can be dissociated from their physical temporal relationship. In the flash-lag effect (FLE), a flash presented at the same spatiotemporal position as a continuously moving stimulus is perceived to lag behind the moving stimulus. In the present s...

journal_title：Journal of vision

authors： Kanai R,Carlson TA,Verstraten FA,Walsh V

更新日期：2009-07-09 00:00:00

abstract：:Rapid category detection, as discovered by S. Thorpe, D. Fize, and C. Marlot (1996), demonstrated that the human visual system can detect object categories in natural images in as little as 150 ms. To gain insight into this phenomenon and to determine its relevance to naturally occurring conditions, we degrade the sti...

journal_title：Journal of vision

authors： Nandakumar C,Malik J

更新日期：2009-06-29 00:00:00

abstract：:These experiments compared the maximum displacement and disparity limits (Dmax) for apparent motion and stereopsis in random-dot displays in adult and 12-28 week-old infant subjects. Both stereo and motion Dmax increased during development, from about 0.3 deg in the youngest infants to 2 deg in adults. Some of the you...

journal_title：Journal of vision

authors： Wattam-Bell J

更新日期：2009-06-18 00:00:00

abstract：:Kittens reared with mixed daily visual input that consists of episodes of normal (binocular) exposure followed by abnormal (monocular) exposure can develop normal visual acuity in both eyes if the length of the former exposure exceeds a critical amount. However, later studies of the tuning of cells in primary visual c...

journal_title：Journal of vision

authors： Mitchell DE,Kennie J,Schwarzkopf DS,Sengpiel F

更新日期：2009-05-21 00:00:00

abstract：:Rapidly decoding the emotional content of a face is an important skill for successful social behavior. Several Event Related brain Potential (ERP) have indicated that emotional expressions already influence brain activity as early as 100 ms. Some studies hypothesized that this early brain response to fear depends on c...

journal_title：Journal of vision

authors： Vlamings PH,Goffaux V,Kemner C

更新日期：2009-05-14 00:00:00

abstract：:In human (D. H. Baker, T. S. Meese, & R. J. Summers, 2007b) and in cat (B. Li, M. R. Peterson, J. K. Thompson, T. Duong, & R. D. Freeman, 2005; F. Sengpiel & V. Vorobyov, 2005) there are at least two routes to cross-orientation suppression (XOS): a broadband, non-adaptable, monocular (within-eye) pathway and a more na...

journal_title：Journal of vision

authors： Meese TS,Baker DH

更新日期：2009-05-04 00:00:00

abstract：:A vast literature exists on human biological motion perception in impoverished displays, e.g., point-light walkers. Less is known about the perception of impoverished biological motion displays in macaques. We trained 3 macaques in the discrimination of facing direction (left versus right) and forward versus backward ...

journal_title：Journal of vision

authors： Vangeneugden J,Vancleef K,Jaeggli T,VanGool L,Vogels R

更新日期：2009-04-28 00:00:00

abstract：:Previously demonstrated learning effects in shifts of transient attention have only been shown to result in beneficial effects upon secondary discrimination tasks and affect landing points of express saccades. Can such learning result in more direct effects upon perception than previously demonstrated? Observers perfo...

journal_title：Journal of vision

authors： Kristjánsson A

更新日期：2009-04-24 00:00:00

abstract：:The LNL (linear, non-linear, linear) model has previously been successfully applied to the problem of texture segmentation. In this study we investigate the extent to which a simple LNL model can simulate human performance in a search task involving a target on a textured surface. Two different classes of surface are ...

journal_title：Journal of vision

authors： Clarke AD,Chantler MJ,Green PR

更新日期：2009-04-13 00:00:00

abstract：:The ability to track multiple moving objects with attention has been the focus of much research. However, the literature is relatively inconclusive regarding two key aspects of this ability, (1) whether the distribution of attention among the tracked targets is fixed during a period of tracking or is dynamically adjus...

journal_title：Journal of vision

authors： Iordanescu L,Grabowecky M,Suzuki S

更新日期：2009-04-03 00:00:00

abstract：:The fovea is the retinal location responsible for our most acute vision. There are several methods used to localize the fovea, but the fovea is not always easily identifiable. Landmarks used to determine the foveal location are variable in normal subjects and localization becomes even more difficult in instances of re...

journal_title：Journal of vision

authors： VanNasdale DA,Elsner AE,Weber A,Miura M,Haggerty BP

更新日期：2009-03-25 00:00:00

abstract：:This investigation assessed whether differences exist in the way males and females overtly orient their visual attention to salient facial features while viewing static emotional facial expressions. Eye movements were recorded while fifty healthy participants (23 males, 27 females) viewed a series of six universal fac...

journal_title：Journal of vision

authors： Vassallo S,Cooper SL,Douglas JM

更新日期：2009-03-17 00:00:00

abstract：:Perceptual learning, the improvement in performance with practice, reflects plasticity in the adult visual system. We challenge a standard claim that specificity of perceptual learning depends on task difficulty during training, instead showing that specificity, or conversely transfer, is primarily controlled by the p...

journal_title：Journal of vision

authors： Jeter PE,Dosher BA,Petrov A,Lu ZL

更新日期：2009-03-05 00:00:00

abstract：:How does prolonged reduction in retinal-image contrast affect visual-contrast coding? Recent evidence indicates that some forms of long-term visual deprivation result in compensatory perceptual and neural changes in the adult visual pathway. It has not been established whether changes due to contrast adaptation are be...

journal_title：Journal of vision

authors： Kwon M,Legge GE,Fang F,Cheong AM,He S

更新日期：2009-02-25 00:00:00

abstract：:Which face cues do we use for gender discrimination? Few studies have tried to answer this question and the few that have tried typically used only a small set of grayscale stimuli, often distorted and presented a large number of times. Here, we reassessed the importance of facial cues for gender discrimination in a m...

journal_title：Journal of vision

authors： Dupuis-Roy N,Fortin I,Fiset D,Gosselin F

更新日期：2009-02-10 00:00:00

abstract：:An important constraint on motion processing is the maximum number of directions that can be perceived at the same time. When transparent-motion stimuli are constructed based solely on direction differences, prior studies demonstrate that no more than two directions are seen simultaneously. However, this limit has bee...

journal_title：Journal of vision

authors： Greenwood JA,Edwards M

更新日期：2009-01-30 00:00:00

abstract：:We evaluated spatial displacement and temporal duration thresholds for discriminating the motion direction of gratings for a broad range of speeds (0.06 degrees/s to 30 degrees/s) in fovea and at +/-30 degrees eccentricity. In general, increased speed yielded lower duration thresholds but higher displacement threshold...

journal_title：Journal of vision

authors： Lappin JS,Tadin D,Nyquist JB,Corn AL

更新日期：2009-01-22 00:00:00

abstract：:The magnitudes of spike responses of area 17 (striate cortex, area V1) neurons to stimulation of their classical receptive fields were reduced (suppressed) when the stimuli extended into the silent surround regions. We found that when optimally oriented sine-wave drifting grating patches extended into the distant part...

journal_title：Journal of vision

authors： Wang C,Bardy C,Huang JY,FitzGibbon T,Dreher B

更新日期：2009-01-16 00:00:00

abstract：:The benefits of binocular vision have been debated throughout the history of vision science yet few studies have considered its contribution beyond a viewing distance of a few meters. In the first set of experiments, we compared monocular and binocular performance on depth interval estimation and discrimination tasks ...

journal_title：Journal of vision

authors： Allison RS,Gillam BJ,Vecellio E

更新日期：2009-01-13 00:00:00

abstract：:In four experiments, we examined the hypothesis that a presaccadic extrafoveal preview of an object normally affects subsequent postsaccadic foveal processing of the object. On each trial, viewers inspected an array of three objects and were instructed to remember one object characteristic (in-depth orientation, image...

journal_title：Journal of vision

authors： Van Eccelpoel C,Germeys F,De Graef P,Verfaillie K

更新日期：2008-12-30 00:00:00

abstract：:Accommodation and vergence help maintain single and focused visual experience while an object moves in depth. The relative importance of retinal blur and disparity, the primary sensory cues to accommodation and vergence, is largely unknown during development; a period when growth of the eye and head necessitate contin...

journal_title：Journal of vision

authors： Bharadwaj SR,Candy TR

更新日期：2008-12-22 00:00:00

abstract：:To reach for an object, one needs to know its egocentric distance (absolute depth). It remains an unresolved issue which signals are required by the brain to calculate this absolute depth information. We devised a geometric model of binocular 3D eye orientation and investigated the signals necessary to uniquely determ...

journal_title：Journal of vision

authors： Blohm G,Khan AZ,Ren L,Schreiber KM,Crawford JD

更新日期：2008-12-15 00:00:00

abstract：:In natural vision, continuously changing input is generated by fast saccadic eye movements and slow drifts. We analyzed effects of fixational saccades, voluntary saccades, and drifts on the activity of macaque V1 neurons. Effects of fixational saccades and small voluntary saccades were equivalent. In the presence of a...

journal_title：Journal of vision

authors： Kagan I,Gur M,Snodderly DM

更新日期：2008-11-27 00:00:00

abstract：:Computational models of spatial vision typically make use of a (rectified) linear filter, a nonlinearity and dominant late noise to account for human contrast discrimination data. Linear-nonlinear cascade models predict an improvement in observers' contrast detection performance when low, subthreshold levels of extern...

journal_title：Journal of vision

authors： Goris RL,Wagemans J,Wichmann FA

更新日期：2008-11-24 00:00:00

abstract：:Moving objects are often occluded by neighboring objects. In order for the eye to smoothly pursue a moving object that is transiently occluded, a prediction of its trajectory is necessary. For targets moving on a linear path, predictive eye velocity can be regulated on the basis of target motion before and after the o...

journal_title：Journal of vision

authors： Orban de Xivry JJ,Missal M,Lefèvre P

更新日期：2008-11-17 00:00:00

abstract：:The neural mechanisms responsible for unifying noncontiguous regions of a visual image into a percept of a single surface remain largely unknown. To investigate these mechanisms, we used a novel stimulus in which local luminance was the only cue for surface segmentation. Subjects viewed an array of small adjoining ele...

journal_title：Journal of vision

authors： Bouvier SE,Cardinal KS,Engel SA

更新日期：2008-11-07 00:00:00

abstract：:An expanding object, which may represent an approaching motion, is easier to detect than a contracting one, which may represent a receding object. To confirm the generality of asymmetry in the detection of approaching and receding motions, we focused on the perception of apparent motion in depth created by moving cast...

journal_title：Journal of vision

authors： Imura T,Shirai N,Tomonaga M,Yamaguchi MK,Yagi A

更新日期：2008-10-31 00:00:00

abstract：:In retinotopically organized areas of the macaque visual cortex, neurons have been found that shift their receptive fields before a saccade to their postsaccadic position. This saccadic remapping has been interpreted as a mechanism contributing to perceptual stability of space across eye movements. So far, there is on...

journal_title：Journal of vision

authors： Wittenberg M,Bremmer F,Wachtler T

更新日期：2008-10-23 00:00:00

abstract：:Contrast response functions (CRFs) from multifocal visual-evoked potential (mfVEP) and BOLD fMRI responses were obtained using the same stimuli to test the hypothesis of a linear relationship between the mfVEP and BOLD fMRI responses. Monocular mfVEP and BOLD fMRI responses were obtained using an 8 degrees in diameter...

journal_title：Journal of vision

authors： Park JC,Zhang X,Ferrera J,Hirsch J,Hood DC

更新日期：2008-10-22 00:00:00

abstract：:Patterned backgrounds can induce large shifts in color appearance, even with patterns of only 10% S-cone contrast (S. K. Shevell & P. Monnier, 2005). The present study tested whether a background pattern could induce color shifts even at a below-threshold contrast. In the first experiment, S-cone contrast threshold fo...

journal_title：Journal of vision

authors： Monnier P,Shevell SK

更新日期：2008-09-23 00:00:00

abstract：:Smooth pursuit eye movements (SP) were studied in 5- and 9-month-old infants and adults in response to a rhombus oscillating horizontally behind three spatially separated vertical occluders. During motion, the rhombus vertices were never visible. Thus the perception of the global motion of the rhombus required integra...

journal_title：Journal of vision

authors： Kochukhova O,Rosander K

更新日期：2008-08-22 00:00:00

abstract：:Visual systems adapt to the prevailing image conditions. This improves the ability to discriminate between two similar stimuli but has the side effect that veridical perception is degraded. For example, prolonged driving at 100 km/h may reduce the perceived speed to 80 km/h but improve the sensitivity to changes in th...

journal_title：Journal of vision

authors： Hietanen MA,Crowder NA,Ibbotson MR

更新日期：2008-08-11 00:00:00

abstract：:Whenever two or more sensory inputs are highly consistent in one or more dimension(s), observers will be more likely to perceive them as a single multisensory event rather than as separate unimodal events. For audiovisual speech, but not for other noncommunicative events, participants exhibit a "unity effect," whereby...

journal_title：Journal of vision

authors： Vatakis A,Ghazanfar AA,Spence C

更新日期：2008-07-29 00:00:00

abstract：:The standard psychophysical model of our early visual system consists of a linear filter stage, followed by a nonlinearity and an internal noise source. If a rectification mechanism is introduced at the output of the linear filter stage, as has been suggested on some occasions, this model actually predicts that human ...

journal_title：Journal of vision

authors： Goris RL,Zaenen P,Wagemans J

更新日期：2008-07-10 00:00:00

abstract：:Detection of low-contrast Gabor patches (GPs) is improved when flanked by collinear GPs, whereas suppression is observed for high-contrast GPs. The facilitation resembles the principles of Gestalt theory of perceptual organization. We propose a model for contour integration in the context of noise that incorporates a ...

journal_title：Journal of vision

authors： Sterkin A,Sterkin A,Polat U

更新日期：2008-07-07 00:00:00