How is facial expression coded?

abstract：:The visual system provides a representation of what and where objects are. This entails parsing the visual scene into distinct objects. Initially, the visual system encodes information locally. While interactions between adjacent cells can explain how local fragments of an object's contour are extracted from a scene, ...

journal_title：Journal of vision

authors： Loffler G

更新日期：2015-01-01 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：:There are different opinions about the roles of local interactions and central processing capacity in visual search. This study attempts to clarify the problem using a new version of relevant set cueing. A central precue indicates two symmetrical segments (that may contain a target object) within a circular array of o...

journal_title：Journal of vision

authors： Põder E

更新日期：2017-04-01 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：:Culture shapes how people gather information from the visual world. We recently showed that Western observers focus on the eyes region during face recognition, whereas Eastern observers fixate predominantly the center of faces, suggesting a more effective use of extrafoveal information for Easterners compared to Weste...

journal_title：Journal of vision

authors： Miellet S,Zhou X,He L,Rodger H,Caldara R

更新日期：2010-06-01 00:00:00

abstract：:Using identical stimuli and methods, we assessed the effects of flankers on three different tasks, orientation discrimination, contrast discrimination, and detection, in central, peripheral, and amblyopic vision. The goal was to understand the factors that limit performance of a task in the presence of flankers in eac...

journal_title：Journal of vision

authors： Levi DM,Carney T

更新日期：2011-01-10 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：:Interpreting colormap visualizations requires determining how dimensions of color in visualizations map onto quantities in data. People have color-based biases that influence their interpretations of colormaps, such as a dark-is-more bias-darker colors map to larger quantities. Previous studies of color-based biases f...

journal_title：Journal of vision

authors： Sibrel SC,Rathore R,Lessard L,Schloss KB

更新日期：2020-11-02 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：: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：:Somatosensory perception is hampered on the moving limb during a goal-directed movement. This somatosensory suppression is mostly attributed to a forward model that predicts future states of the system based on the established motor command. Here, we examined whether and how this suppression is modulated by the predic...

journal_title：Journal of vision

authors： Voudouris D,Broda MD,Fiehler K

更新日期：2019-05-01 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：:Archerfish are known for their remarkable behavior of shooting water jets at prey hanging on vegetation above water. Motivated by the fish's capacity to knock down small prey as high as two meters above water level, we studied the role of the retina in facilitating their excellent visual acuity. First, we show behavio...

journal_title：Journal of vision

authors： Ben-Simon A,Ben-Shahar O,Vasserman G,Ben-Tov M,Segev R

更新日期：2012-11-28 00:00:00

abstract：:For the linear discrimination of two stimuli in white Gaussian noise in the presence of internal noise, a method is described for estimating linear classification weights from the sum of noise images segregated by stimulus and response. The recommended method for combining the two response images for the same stimulus...

journal_title：Journal of vision

authors： Ahumada AJ Jr

更新日期：2002-01-01 00:00:00

abstract：:While many aspects of human vision at low light levels have been studied in great detail, motion perception has rarely been investigated so far. Here we address differential effects of light level on the perception of coherent motion, heading from radial flow, and biological motion. We determined detection thresholds ...

journal_title：Journal of vision

authors： Billino J,Bremmer F,Gegenfurtner KR

更新日期：2008-03-18 00:00:00

abstract：:We used biased random-dot dynamic test stimuli to measure the strength of the motion aftereffect (MAE) to evaluate the usefulness of this technique as a measure of motion adaptation strength. The stimuli consisted of noise dots whose individual directions were random and of signal dots moving in a unique direction. Al...

journal_title：Journal of vision

authors： Castet E,Keeble DR,Verstraten FA

更新日期：2002-01-01 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

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：: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 multifocal visual evoked potential (mfVEP) is largely generated in V1. To relate the electrical activity recorded from humans to recordings from single cells in nonhuman primate (V1) cortex, contrast-response functions for the human mfVEP were compared to predictions from a model of V1 activity (D. J. Heeger, A. C...

journal_title：Journal of vision

authors： Hood DC,Ghadiali Q,Zhang JC,Graham NV,Wolfson SS,Zhang X

更新日期：2006-04-24 00:00:00

abstract：:The human fovea lies at the center of the retina and supports high-acuity vision. In normal visual system development, the highest acuity is correlated with both a high density of cone photoreceptors in the fovea and a magnified retinotopic representation of the fovea in the visual cortex. Both cone density and the co...

journal_title：Journal of vision

authors： Woertz EN,Wilk MA,Duwell EJ,Mathis JR,Carroll J,DeYoe EA

更新日期：2020-06-03 00:00:00

abstract：:Although the orientation of line segments and simple shapes is a well-studied area of vision, little is known about geometric factors that influence perceived orientation of complex multipart shapes. The study of these factors is of interest because it allows for an insight into the basic problem of how local geometri...

journal_title：Journal of vision

authors： Cohen EH,Singh M

更新日期：2006-07-14 00:00:00

abstract：:Measurements of area summation for luminance-modulated stimuli are typically confounded by variations in sensitivity across the retina. Recently we conducted a detailed analysis of sensitivity across the visual field (Baldwin, Meese, & Baker, 2012) and found it to be well described by a bilinear "witch's hat" function...

journal_title：Journal of vision

authors： Baldwin AS,Meese TS

更新日期：2015-01-01 00:00:00

abstract：:Loss of central vision can be partially compensated by increased use of peripheral vision. For example, patients experiencing central vision loss due to disease (macular degeneration) or healthy participants trained with simulated central vision loss, tend to develop eccentric fixation spots for reading or other visua...

journal_title：Journal of vision

authors： Maniglia M,Visscher KM,Seitz AR

更新日期：2020-09-02 00:00:00

abstract：:The magnitude and precision of stereoscopic depth between two probes is often determined by the disparity each has to a common background. If stereoscopic slant of the background is underestimated, a bias is introduced in the PSE of the probes (G. Mitchison & G. Westheimer, 1984). Using random dot stimuli, we show her...

journal_title：Journal of vision

authors： Gillam BJ,Sedgwick HA,Marlow P

更新日期：2011-05-10 00:00:00

abstract：:We present a three-mode expressive-feature model for recognizing gender (female, male) from point-light displays of walking people. Prototype female and male walkers are initially decomposed into a subspace of their three-mode components (posture, time, and gender). We then apply a weight factor to each point-light tr...

journal_title：Journal of vision

authors： Davis JW,Gao H

更新日期：2004-05-06 00:00:00

abstract：:We investigated the controversy regarding double training in motion discrimination learning. We collected data from 43 participants in a motion direction discrimination learning task with either double training (i.e., training plus exposure) or single training (i.e., no exposure). By pooling these data with those in t...

journal_title：Journal of vision

authors： Huang J,Liang J,Zhou Y,Liu Z

更新日期：2017-06-01 00:00:00

abstract：:In binocular viewing, images presented to the amblyopic eye are suppressed in the cortex to prevent confusion or diplopia. The present study measures depth and extent of interocular suppression across the central circular 24° visual field in observers with strabismus and microstrabismus. Visual stimuli were concentric...

journal_title：Journal of vision

authors： Chima AS,Formankiewicz MA,Waugh SJ

更新日期：2016-08-01 00:00:00

abstract：:A range of visual illusions, including the much-studied flash-lag effect, demonstrate that neural signals coding for motion and position interact in the visual system. One interpretation of these illusions is that they are the consequence of motion extrapolation mechanisms in the early visual system. Here, we study th...

journal_title：Journal of vision

authors： Johnson P,Davies S,Hogendoorn H

更新日期：2020-12-02 00:00:00

abstract：:Perceptual grouping plays an indispensable role in figure-ground segregation and attention distribution. For example, a column pops out if it contains element bars orthogonal to uniformly oriented element bars. Jingling and Tseng (2013) have reported that contextual grouping in a column matters to visual search behavi...

journal_title：Journal of vision

authors： Chow HM,Jingling L,Tseng CH

更新日期：2013-08-29 00:00:00