Dynamics of attentional deployment during saccadic programming.

abstract：:Top-down guidance of visual attention has classically been thought to operate in a feature-specific manner. However, recent studies have shown that top-down visual attention can also be guided by information about target-nontarget feature relations (e.g., larger, redder, brighter). Here we recommend a minimal set of c...

journal_title：Journal of vision

authors： Harris AM,Remington RW,Becker SI

更新日期：2013-05-06 00:00:00

abstract：:Human observers made local orientation judgments of smoothly shaded surfaces illuminated from different directions by large area lights, both with and without visible smooth occlusion contours. Test-retest correlations between the first and second halves of the experiment revealed that observers' judgments were highly...

journal_title：Journal of vision

authors： Egan EJ,Todd JT

更新日期：2015-02-24 00:00:00

abstract：:Repetitive eye movements are known to produce motion aftereffect (MAE) when made to track a moving stimulus. Explanations typically centre on the retinal motion created in the peripheral visual field by the eye movement. This retinal motion is thought to induce perceived motion in the central test, either through the ...

journal_title：Journal of vision

authors： Freeman TC,Sumnall JH,Snowden RJ

更新日期：2003-12-05 00:00:00

abstract：:The brain is a slave to sense; we see and hear things that are not there and engage in ongoing correction of these illusory experiences, commonly termed pareidolia. The current study investigates whether the predisposition to see meaning in noise is lateralized to one hemisphere or the other and how this predispositio...

journal_title：Journal of vision

authors： Cropper SJ,McCauley A,Gwinn OS,Bartlett M,Nicholls MER

更新日期：2020-10-01 00:00:00

abstract：:Given the inherent difference in judgment required to complete visual detection and identification tasks, it is unknown whether task selection differentially affects visual performance as a function of development. The aim of the present study is therefore to systematically assess and contrast visual performance using...

journal_title：Journal of vision

authors： Hanck J,Cornish K,Perreault A,Kogan C,Bertone A

更新日期：2012-06-01 00:00:00

abstract：:Communication is critical for normal, everyday life. During a conversation, information is conveyed in a number of ways, including through body, head, and facial changes. While much research has examined these latter forms of communication, the majority of it has focused on static representations of a few, supposedly ...

journal_title：Journal of vision

authors： Cunningham DW,Wallraven C

更新日期：2009-12-07 00:00:00

abstract：:Previous studies have shown independent attentional selection of targets in the left and right visual hemifields during attentional tracking (Alvarez & Cavanagh, 2005) but not during a visual search (Luck, Hillyard, Mangun, & Gazzaniga, 1989). Here we tested whether multifocal spatial attention is the critical process...

journal_title：Journal of vision

authors： Alvarez GA,Gill J,Cavanagh P

更新日期：2012-05-25 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：:Saccadic adaptation is an oculomotor learning process that maintains the accuracy of eye movements to ensure effective perception of the environment. Although saccadic adaptation is commonly considered an automatic and low-level motor calibration in the cerebellum, we recently found that strength of adaptation is infl...

journal_title：Journal of vision

authors： Meermeier A,Gremmler S,Richert K,Eckermann T,Lappe M

更新日期：2017-10-01 00:00:00

abstract：:A series of seven experiments explored search for opaque targets among transparent distractors or vice versa. Static stimuli produced very inefficient search. With moving items, search for an opaque target among transparent distractors was quite efficient while search for transparent targets was less efficient (Experi...

journal_title：Journal of vision

authors： Wolfe JM,Birnkrant RS,Kunar MA,Horowitz TS

更新日期：2005-03-30 00:00:00

abstract：:Human adults with normal vision are capable of improving performance on visual tasks through repeated practice. Previous work has shown that enhancing synaptic levels of acetylcholine (ACh) in healthy human adults with donepezil (trade name: Aricept) can increase the magnitude and specificity of perceptual learning (P...

journal_title：Journal of vision

authors： Levi DM,Li RW,Silver MA,Chung STL

更新日期：2020-04-09 00:00:00

abstract：:The organization of human lateral occipitotemporal cortex (lOTC) has been characterized largely according to two distinct principles: retinotopy and category-selectivity. Whereas category-selective regions were originally thought to exist beyond retinotopic maps, recent evidence highlights overlap. Here, we combined d...

journal_title：Journal of vision

authors： Silson EH,Groen II,Kravitz DJ,Baker CI

更新日期：2016-01-01 00:00:00

abstract：:The accurate perception of another person's gaze direction underlies most social interactions and provides important information about his or her future intentions. As a first step to measuring gaze perception, most experiments determine the range of gaze directions that observers judge as being direct: the cone of di...

journal_title：Journal of vision

authors： Mareschal I,Calder AJ,Dadds MR,Clifford CW

更新日期：2013-04-22 00:00:00

abstract：:Previous contrast discrimination experiments have shown that luminance contrast is summed across ocular (T. S. Meese, M. A. Georgeson, & D. H. Baker, 2006) and spatial (T. S. Meese & R. J. Summers, 2007) dimensions at threshold and above. However, is this process sufficiently general to operate across the conjunction ...

journal_title：Journal of vision

authors： Meese TS,Baker DH

更新日期：2011-01-27 00:00:00

abstract：:We recently demonstrated that observers are capable of encoding not only summary statistics, such as mean and variance of stimulus ensembles, but also the shape of the ensembles. Here, for the first time, we show the learning dynamics of this process, investigate the possible priors for the distribution shape, and dem...

journal_title：Journal of vision

authors： Chetverikov A,Campana G,Kristjánsson Á

更新日期：2017-02-01 00:00:00

abstract：:During visual fixation, microscopic eye movements shift the image on the retina over a large number of photoreceptors. Although these movements have been investigated for almost a century, the amount of retinal image motion they create remains unclear. Currently available estimates rely on assumptions about the probab...

journal_title：Journal of vision

authors： Cherici C,Kuang X,Poletti M,Rucci M

更新日期：2012-06-22 00:00:00

abstract：:Perceiving three-dimensional object motion while moving through the world is hard: not only must optic flow be segmented and parallax resolved into shape and motion, but also observer motion needs to be taken into account in order to perceive absolute, rather than observer-relative motion. In order to simplify the las...

journal_title：Journal of vision

authors： Dupin L,Wexler M

更新日期：2013-02-08 00:00:00

abstract：:Most models of visual search are based on the intuition that humans choose fixation locations containing features that best match the features of the target. The optimal version of this feature-based strategy is what we term "maximum a posteriori (MAP) search." Alternatively, humans could choose fixations that maximiz...

journal_title：Journal of vision

authors： Najemnik J,Geisler WS

更新日期：2008-03-07 00:00:00

abstract：:A fundamental question in visual perception is to characterize how information from sensory input is integrated with prior probabilities. The role of prior probabilities is controversial for elementary visual processes, which are often believed to be immune from higher-level influences. In this paper, we demonstrate s...

journal_title：Journal of vision

authors： Lu H,Tjan BS,Liu Z

更新日期：2006-01-27 00:00:00

abstract：:The internal representation of stimuli is imperfect and subject to bias. Noise introduced at initial encoding and during maintenance degrades the precision of representation. Stimulus estimation is also biased away from recently encountered stimuli, a phenomenon known as adaptation. Within a Bayesian framework, greate...

journal_title：Journal of vision

authors： Mattar MG,Carter MV,Zebrowitz MS,Thompson-Schill SL,Aguirre GK

更新日期：2018-12-03 00:00:00

abstract：:In the barber-pole illusion (BPI), a diagonally moving grating is perceived as moving vertically because of the shape of the vertically oriented window through which it is viewed-a strong shape-motion interaction. We introduce a novel stimulus-the moving barber pole-in which a diagonal, drifting sinusoidal carrier is ...

journal_title：Journal of vision

authors： Sun P,Chubb C,Sperling G

更新日期：2014-05-01 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：:Amblyopia results in a loss of visual acuity, contrast sensitivity, and position acuity. However, the nature of the neural losses is not yet fully understood. Here we report the results of experiments using noise to try to better understand the losses in amblyopia. Specifically, in one experiment we compared the perfo...

journal_title：Journal of vision

authors： Levi DM,Klein SA,Chen I

更新日期：2008-04-04 00:00:00

abstract：:Relatively little is known about the processes, both linear and nonlinear, by which signals are combined beyond V1. By presenting two stimulus components simultaneously, flickering at different temporal frequencies (frequency tagging) while measuring steady-state visual evoked potentials, we can assess responses to th...

journal_title：Journal of vision

authors： Cunningham DGM,Baker DH,Peirce JW

更新日期：2017-05-01 00:00:00

abstract：:Masking is said to occur when a mask stimulus interferes with the visibility of a target (test) stimulus. One widely held view of this process supposes interactions between mask and test mechanisms (cross-channel masking), and explicit models (e.g., J. M. Foley, 1994) have proposed that the interactions are inhibitory...

journal_title：Journal of vision

authors： Meese TS,Hess RF

更新日期：2004-10-18 00:00:00

abstract：:We investigated the role of gaze in encoding of object landmarks in navigation. Gaze behavior was measured while participants learnt to navigate in a virtual large-scale environment in order to understand the sampling strategies subjects use to select visual information during navigation. The results showed a consiste...

journal_title：Journal of vision

authors： Hamid SN,Stankiewicz B,Hayhoe M

更新日期：2010-10-22 00:00:00

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：:Humans can estimate and encode numerosity over a large range, from very few items to several hundreds. Two distinct mechanisms have been proposed: subitizing, for numbers up to four and estimation for larger numerosities. We have recently extended this idea by suggesting that for very densely packed arrays, when items...

journal_title：Journal of vision

authors： Pomè A,Anobile G,Cicchini GM,Burr DC

更新日期：2019-06-03 00:00:00

abstract：:Attentional selection in visual search paradigms and perceptual selection in bistable perception paradigms show functional similarities. For example, both are sensitive to trial history: They are biased toward previously selected targets or interpretations. We investigated whether priming by target selection in visual...

journal_title：Journal of vision

authors： Brinkhuis MA,Kristjánsson Á,Brascamp JW

更新日期：2015-08-01 00:00:00

abstract：:In typical natural environments, the visual system receives different inputs in quick succession as gaze moves around. We examined whether local trans-saccadic differences in luminance, contrast, and orientation influenced perception and target selection in the eye movement system. Observers initially fixated a periph...

journal_title：Journal of vision

authors： Ludwig CJ,Davies JR,Gegenfurtner KR

更新日期：2012-01-01 00:00:00