Optimal stimulus encoders for natural tasks.

abstract：:Express saccades (ES) are the most reflexive saccadic eye movements, with very short reaction times of 70-110 ms. It is likely that ES have the shortest saccade reaction times (SRTs) possible given the known physiological and anatomical delays present in sensory and motor systems. Nevertheless, it has been demonstrate...

journal_title：Journal of vision

authors： Edelman JA,Mieses AM,Konnova K,Shiu D

更新日期：2017-03-01 00:00:00

abstract：:Intuitively, extrapolating object trajectories should make visual tracking more accurate. This has proven to be true in many contexts that involve tracking a single item. But surprisingly, when tracking multiple identical items in what is known as "multiple object tracking," observers often appear to ignore direction ...

journal_title：Journal of vision

authors： Zhong SH,Ma Z,Wilson C,Liu Y,Flombaum JI

更新日期：2014-10-13 00:00:00

abstract：:Due to the aperture problem, the initial direction of tracking responses to a translating bar is biased towards the direction orthogonal to the bar. This observation offers a powerful way to explore the interactions between retinal and extraretinal signals in controlling our actions. We conducted two experiments to pr...

journal_title：Journal of vision

authors： Bogadhi AR,Montagnini A,Masson GS

更新日期：2013-11-04 00:00:00

abstract：:Although visual systems are optimized to deal with the natural visual environment, our understanding of human motion perception is in large part based on the use of artificial stimuli. Here, we assessed observers' ability to estimate the direction of translating natural images and fractals by having them adjust the or...

journal_title：Journal of vision

authors： Dakin SC,Apthorp D,Alais D

更新日期：2010-09-03 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：:Recent experiments have established that monocular areas arising due to occlusion of one object by another contribute to stereoscopic depth perception. It has been suggested that the primary role of monocular occlusions is to define depth discontinuities and object boundaries in depth. Here we use a carefully designed...

journal_title：Journal of vision

authors： Tsirlin I,Wilcox LM,Allison RS

更新日期：2010-06-01 00:00:00

abstract：:Color is commonly described in terms of the three perceptual attributes-hue, saturation, and brightness-of which only hue has a qualitative nature, saturation and brightness being of a quantitative nature. A possible reason for such a phenomenological structure of the color manifold, and its geometric representation, ...

journal_title：Journal of vision

authors： Logvinenko AD

更新日期：2015-01-14 00:00:00

abstract：:Recently, researchers have begun to investigate how nonspatial perceptual information is extracted into visual working memory (VWM), focusing particularly on object-based encoding (OBE). That is, whenever even one feature-dimension is selected for entry into VWM, the others are also extracted automatically. While ther...

journal_title：Journal of vision

authors： Shen M,Tang N,Wu F,Shui R,Gao Z

更新日期：2013-02-01 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：:It is well established that the apparent duration of moving visual objects is greater at higher as compared to slower speeds. Here we report the effects of acceleration and deceleration on the perceived duration of a drifting grating with average speed kept constant (10°/s).For acceleration, increasing the speed range...

journal_title：Journal of vision

authors： Bruno A,Ayhan I,Johnston A

更新日期：2015-01-01 00:00:00

abstract：:We examined whether observers veridically perceive the reflectances of real objects under natural viewing conditions. A new forced-choice paradigm was used to measure observers' abilities to identify (not match) the reflectance of randomly crumpled gray papers across two levels of illumination, and also to simultaneou...

journal_title：Journal of vision

authors： Robilotto R,Zaidi Q

更新日期：2004-09-15 00:00:00

abstract：:The investigation of cognitive influence on binocular rivalry has a long history. However, the effects of visual WM on rivalry have never been studied so far. We examined top-down modulation of rivalry perception in four experiments to compare the effects of visual WM and sustained selective attention: In the first th...

journal_title：Journal of vision

authors： Scocchia L,Valsecchi M,Gegenfurtner KR,Triesch J

更新日期：2014-05-30 00:00:00

abstract：:The position of a saccade target can be encoded in gaze-centered coordinates, that is, relative to the current gaze position, or in object-centered coordinates, that is, relative to an object in the environment. We tested the role of gaze-centered and object-centered coding in a double-step saccade task involving the ...

journal_title：Journal of vision

authors： de Brouwer AJ,Medendorp WP,Smeets JB

更新日期：2016-11-01 00:00:00

abstract：:A 2D perspective image of a slanted rectangular object is sufficient for a strong 3D percept. Two computational assumptions that could be used to interpret 3D from images of rectangles are as follows: (1) converging lines in an image are parallel in the world, and (2) skewed angles in an image are orthogonal in the wo...

journal_title：Journal of vision

authors： Saunders JA,Backus BT

更新日期：2007-04-13 00:00:00

abstract：:Attention allocation during pursuit of a spot is usually characterized as asymmetric with more attention placed ahead of the target than behind it. However, attention is symmetrically allocated across larger pursuit stimuli. An unresolved issue is how tightly attention is constrained on large stimuli during pursuit. A...

journal_title：Journal of vision

authors： Watamaniuk SN,Heinen SJ

更新日期：2015-01-01 00:00:00

abstract：:Sensory neurons represent stimulus information with sequences of action potentials that differ across repeated measurements. This variability limits the information that can be extracted from momentary observations of a neuron's response. It is often assumed that integrating responses over time mitigates this limitati...

journal_title：Journal of vision

authors： Goris RLT,Ziemba CM,Movshon JA,Simoncelli EP

更新日期：2018-08-01 00:00:00

abstract：:Spatial attention and feature-based attention are regarded as two independent mechanisms for biasing the processing of sensory stimuli. Feature attention is held to be a spatially invariant mechanism that advantages a single feature per sensory dimension. In contrast to the prediction of location independence, I found...

journal_title：Journal of vision

authors： Anderson B

更新日期：2014-11-18 00:00:00

abstract：:Various equations that describe how observers could recover the trajectory of an approaching object have been put forward. Many are relatively complex formulations that recover the veridical trajectory by scaling retinal cues, such as looming and changing disparity. However, these equations do not seem to describe hum...

journal_title：Journal of vision

authors： Duke PA,Rushton SK

更新日期：2012-03-08 00:00:00

abstract：:It was previously shown that sensitivity improvements to a task-irrelevant motion direction can be obtained when it is presented in concurrence with observers' performance of an attended task (A. R. Seitz & T. Watanabe, 2003; T. Watanabe, J. E. Náñez, & Y. Sasaki, 2001). To test whether this task-irrelevant perceptual...

journal_title：Journal of vision

authors： Nishina S,Seitz AR,Kawato M,Watanabe T

更新日期：2007-10-12 00:00:00

abstract：:The dynamics of attentional deployment before saccade execution was studied with a dual-task paradigm. Observers made a horizontal saccade whose direction was indicated by a symbolic precue and had to discriminate the orientation of a Gabor patch displayed at different delays after the precue (but before saccade onset...

journal_title：Journal of vision

authors： Castet E,Jeanjean S,Montagnini A,Laugier D,Masson GS

更新日期：2006-03-03 00:00:00

abstract：:We investigated the role of global optic flow for visual-motor adaptation of walking direction. In an immersive virtual environment, observers walked to a circular target lying on either a homogeneous ground plane (target-motion condition) or a textured ground plane (ground-flow condition). During adaptation trials, w...

journal_title：Journal of vision

authors： Saunders JA,Durgin FH

更新日期：2011-03-22 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：:In order to maintain visual stability during self-motion, the brain needs to update any egocentric spatial representations of the environment. Here, we use a novel psychophysical approach to investigate how and to what extent the brain integrates visual, extraocular, and vestibular signals pertaining to this spatial u...

journal_title：Journal of vision

authors： Clemens IA,Selen LP,Koppen M,Medendorp WP

更新日期：2012-11-14 00:00:00

abstract：:Our perceptions are fundamentally altered by our expectations, i.e., priors about the world. In previous statistical learning experiments (Chalk, Seitz, & Seriès, 2010), we investigated how such priors are formed by presenting subjects with white low contrast moving dots on a blank screen and using a bimodal distribut...

journal_title：Journal of vision

authors： Gekas N,Chalk M,Seitz AR,Seriès P

更新日期：2013-03-13 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

abstract：:Because we live in a dynamic environment with moving eyes and body, our retinas are often stimulated by new scenes that appear suddenly and are only briefly available. How the visual system successfully extracts information from such challenging stimulation is not yet understood. For some stimuli, like photos of natur...

journal_title：Journal of vision

authors： Linares D,Motoyoshi I,Nishida S

更新日期：2012-09-06 00:00:00

abstract：:Previous work on the straddle effect in contrast perception (Foley, 2011; Graham & Wolfson, 2007; Wolfson & Graham, 2007, 2009) has used visual patterns and observer tasks of the type known as spatially second-order. After adaptation of about 1 s to a grid of Gabor patches all at one contrast, a second-order test patt...

journal_title：Journal of vision

authors： Graham NV,Wolfson SS

更新日期：2018-05-01 00:00:00

abstract：:Progression of retinal degeneration in a mouse model was studied in vivo with high-resolution spectral-domain optical coherence tomography (SD-OCT). Imaging in 3D with high depth resolution (<3 mum), SD-OCT resolved all the major layers of the retina of control C57BL/6J mice. Images of transgenic mice having a null mu...

journal_title：Journal of vision

authors： Kim KH,Puoris'haag M,Maguluri GN,Umino Y,Cusato K,Barlow RB,de Boer JF

更新日期：2008-01-24 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：:Facial expression is theorized to be visually represented in a multidimensional expression space, relative to a norm. This norm-based coding is typically argued to be implemented by a two-pool opponent coding system. However, the evidence supporting the opponent coding of expression cannot rule out the presence of a t...

journal_title：Journal of vision

authors： Burton N,Jeffery L,Calder AJ,Rhodes G

更新日期：2015-01-02 00:00:00