Impacts of older age on the temporal properties of collinear facilitation.

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：: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：:In their day-to-day activities human beings are constantly generating behavior, such as pointing, grasping or verbal reports, on the basis of visible target locations. The question arises how the brain represents target locations. One possibility is that the brain represents them metrically, i.e. in terms of distance ...

journal_title：Journal of vision

authors： Thaler L,Goodale MA

更新日期：2010-03-23 00:00:00

abstract：:Previous studies of the motion aperture problem have shown that the direction of grating motion can be biased by using binocular disparity to designate borders of the aperture as intrinsic (belonging to the grating) or extrinsic (resulting from occlusion of the grating). Observers report motion in the direction of the...

journal_title：Journal of vision

authors： Graf EW,Adams WJ,Lages M

更新日期：2004-05-19 00:00:00

abstract：:The visual mismatch negativity (vMMN) is a negative component of event-related potentials (ERPs). It occurs when an infrequent visual stimulus, a deviant, is randomly and unpredictably presented in a sequence of frequent visual stimuli, the standards, and is thought to reflect prediction and prediction error of visual...

journal_title：Journal of vision

authors： Jack BN,Roeber U,O'Shea RP

更新日期：2015-01-01 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：:Many studies have shown that humans face a trade-off between the speed and accuracy with which they can make movements. In this article, we asked whether humans choose movement time to maximize expected gain by taking into account their own speed-accuracy trade-off (SAT). We studied this question within the context of...

journal_title：Journal of vision

authors： Dean M,Wu SW,Maloney LT

更新日期：2007-07-30 00:00:00

abstract：:Binocular rivalry occurs when an image is presented to one eye while at the same time another, incongruent, image is presented to the other eye in the corresponding retinotopic location and conscious perception alternates spontaneously between the two monocular views. If a short blank period is inserted between interm...

journal_title：Journal of vision

authors： Sandberg K,Bahrami B,Lindeløv JK,Overgaard M,Rees G

更新日期：2011-02-08 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：:We used fMRI to examine the neural correlates of subjective reversals for bistable structure-from-motion. We compared transparent random-dot kinematograms depicting either a cylinder rotating in depth or two flat surfaces translating in opposite directions at apparently different depths. For both such stimuli, the mot...

journal_title：Journal of vision

authors： Freeman ED,Sterzer P,Driver J

更新日期：2012-06-29 00:00:00

abstract：:Crowding increases with eccentricity and is most readily observed in the periphery. During natural, active vision, however, central vision plays an important role. Measures of critical distance to estimate crowding are difficult in central vision, as these distances are small. Any overlap of flankers with the target m...

journal_title：Journal of vision

authors： Ghahghaei S,Walker L

更新日期：2016-09-01 00:00:00

abstract：:Covert spatial attention increases the perceived contrast of stimuli at attended locations, presumably via enhancement of visual neural responses. However, the relation between perceived contrast and the underlying neural responses has not been characterized. In this study, we systematically varied stimulus contrast, ...

journal_title：Journal of vision

authors： Cutrone EK,Heeger DJ,Carrasco M

更新日期：2014-12-30 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：:Strategic use of advanced information about search display properties can benefit covert attentional selection. However, little work has investigated this benefit on overt selection. The present study examined how cued information impacts oculomotor selection over time and the role played by individual differences in ...

journal_title：Journal of vision

authors： Weaver MD,Paoletti D,van Zoest W

更新日期：2014-03-24 00:00:00

abstract：:Humans have an ability to rapidly detect emotive stimuli. However, many emotional objects in a scene are also highly visually salient, which raises the question of how dependent the effects of emotionality are on visual saliency and whether the presence of an emotional object changes the power of a more visually salie...

journal_title：Journal of vision

authors： Humphrey K,Underwood G,Lambert T

更新日期：2012-01-25 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 evaluated the ability of emmetropic and myopic observers to detect and discriminate blur across the retina under monocular or binocular viewing conditions. We recruited 39 young (23-30 years) healthy adults (n = 19 myopes) with best-corrected visual acuity 0.0 LogMAR (20/20) or better in each eye and no binocular o...

journal_title：Journal of vision

authors： Maiello G,Walker L,Bex PJ,Vera-Diaz FA

更新日期：2017-05-01 00:00:00

abstract：:Pursuit can be guided by perceived rather than physical motion, but the temporal relationship between motion perception and pursuit is unknown. We used an apparent motion stimulus consisting of a horizontal row of evenly spaced Kanizsa illusory squares (1.44 deg2): the illusory contours appeared at the midpoints of th...

journal_title：Journal of vision

authors： Madelain L,Krauzlis RJ

更新日期：2003-11-18 00:00:00

abstract：:Amblyopia results in a severe loss of positional information and in the ability to accurately enumerate objects (V. Sharma, D. M. Levi, & S. A. Klein, 2000). In this study, we asked whether amblyopia also disrupts the ability to track a near-threshold change in the trajectory of a single target amongst multiple simila...

journal_title：Journal of vision

authors： Levi DM,Tripathy SP

更新日期：2006-11-28 00:00:00

abstract：:Search is commonly described as a repeating cycle of guidance to target-like objects, followed by the recognition of these objects as targets or distractors. Are these indeed separate processes using different visual features? We addressed this question by comparing observer behavior to that of support vector machine ...

journal_title：Journal of vision

authors： Zelinsky GJ,Peng Y,Berg AC,Samaras D

更新日期：2013-10-08 00:00:00

abstract：:Horizontal information was recently suggested to be crucial for face identification. In the present paper, we expand on this finding and investigate the role of orientations for all the basic facial expressions and neutrality. To this end, we developed orientation bubbles to quantify utilization of the orientation spe...

journal_title：Journal of vision

authors： Duncan J,Gosselin F,Cobarro C,Dugas G,Blais C,Fiset D

更新日期：2017-12-01 00:00:00

abstract：:In a wide variety of neural systems, neurons tuned to a primary dimension of interest often have responses that are modulated in a multiplicative manner by other features such as stimulus intensity or contrast. In this methodological study, we present a demonstration that it is possible to use psychophysical experimen...

journal_title：Journal of vision

authors： DiMattina C

更新日期：2016-07-01 00:00:00

abstract：:Recent studies suggest that the active observer combines optic flow information with extra-retinal signals resulting from head motion. Such a combination allows, in principle, a correct discrimination of the presence or absence of surface rotation. In Experiments 1 and 2, observers were asked to perform such discrimin...

journal_title：Journal of vision

authors： Fantoni C,Caudek C,Domini F

更新日期：2010-05-01 00:00:00

abstract：:Photographs and line drawings of natural scenes are easily classified even when the image is only briefly visible to the observer. Contour junctions and points of high curvature have been shown to be important for perceptual organization (Attneave, 1954; Biederman, 1987) and have been proposed to be influential in rap...

journal_title：Journal of vision

authors： Wilder J,Dickinson S,Jepson A,Walther DB

更新日期：2018-08-01 00:00:00

abstract：:Selective attention is often considered the "gateway" to visual working memory (VWM). However, the extent to which we can voluntarily control which of an object's features enter memory remains subject to debate. Recent research has converged on the concept of VWM as a limited commodity distributed between elements of ...

journal_title：Journal of vision

authors： Marshall L,Bays PM

更新日期：2013-02-18 00:00:00

abstract：:Two small objects (flies) followed identical circular orbits. However, a large background that circled around behind them in different phases made one orbit look twice as large as the other (size illusion) or made the circles look like very thin horizontal or vertical ellipses with aspect ratios of 7.5:1 or more (shap...

journal_title：Journal of vision

authors： Anstis S,Casco C

更新日期：2006-09-22 00:00:00

abstract：:Visual short-term memory (VSTM) load leads to impaired perception during maintenance. Here, we fitted the contrast response function to psychometric orientation discrimination data while also varying attention demand during maintenance to investigate: (1) whether VSTM load effects on perception are mediated by a modul...

journal_title：Journal of vision

authors： Konstantinou N,Lavie N

更新日期：2020-10-01 00:00:00

abstract：:Our nervous system typically processes signals from multiple sensory modalities at any given moment and is therefore posed with two important problems: which of the signals are caused by a common event, and how to combine those signals. We investigated human perception in the presence of auditory, visual, and tactile ...

journal_title：Journal of vision

authors： Wozny DR,Beierholm UR,Shams L

更新日期：2008-03-27 00:00:00

abstract：:This study investigated the mechanisms of grouping and segregation in natural scenes of close-up foliage, an important class of scenes for human and non-human primates. Close-up foliage images were collected with a digital camera calibrated to match the responses of human L, M, and S cones at each pixel. The images we...

journal_title：Journal of vision

authors： Ing AD,Wilson JA,Geisler WS

更新日期：2010-04-27 00:00:00

abstract：:In visual crowding, identification of a peripheral object is impaired by nearby objects. Recent studies have demonstrated that crowding is not limited only to interaction between low-level features or parts, as presumed by most models of crowding, but can also occur between high-level, configural representations of ob...

journal_title：Journal of vision

authors： Pirkner Y,Kimchi R

更新日期：2017-09-01 00:00:00