The nature of letter crowding as revealed by first- and second-order classification images.

Abstract:

:Visual crowding refers to the marked inability to identify an otherwise perfectly identifiable object when it is flanked by other objects. Crowding places a significant limit on form vision in the visual periphery; its mechanism is, however, unknown. Building on the method of signal-clamped classification images (Tjan & Nandy, 2006), we developed a series of first- and second-order classification-image techniques to investigate the nature of crowding without presupposing any model of crowding. Using an "o" versus "x" letter-identification task, we found that (1) crowding significantly reduced the contrast of first-order classification images, although it did not alter the shape of the classification images; (2) response errors during crowding were strongly correlated with the spatial structures of the flankers that resembled those of the erroneously perceived targets; (3) crowding had no systematic effect on intrinsic spatial uncertainty of an observer nor did it suppress feature detection; and (4) analysis of the second-order classification images revealed that crowding reduced the amount of valid features used by the visual system and, at the same time, increased the amount of invalid features used. Our findings strongly support the feature-mislocalization or source-confusion hypothesis as one of the proximal contributors of crowding. Our data also agree with the inappropriate feature-integration account with the requirement that feature integration be a competitive process. However, the feature-masking account and a front-end version of the spatial attention account of crowding are not supported by our data.

journal_name

J Vis

journal_title

Journal of vision

authors

Nandy AS,Tjan BS

doi

10.1167/7.2.5

subject

Has Abstract

pub_date

2007-02-07 00:00:00

pages

5.1-26

issue

2

issn

1534-7362

pii

7/2/5

journal_volume

7

pub_type

杂志文章
  • Allocation of attention during pursuit of large objects is no different than during fixation.

    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

    pub_type: 杂志文章

    doi:10.1167/15.9.9

    authors: Watamaniuk SN,Heinen SJ

    更新日期:2015-01-01 00:00:00

  • Optical and neural anisotropy in peripheral vision.

    abstract::Optical blur in the peripheral retina is known to be highly anisotropic due to nonrotationally symmetric wavefront aberrations such as astigmatism and coma. At the neural level, the visual system exhibits anisotropies in orientation sensitivity across the visual field. In the fovea, the visual system shows higher sens...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.5.1

    authors: Zheleznyak L,Barbot A,Ghosh A,Yoon G

    更新日期:2016-01-01 00:00:00

  • Daily mixed visual experience that prevents amblyopia in cats does not always allow the development of good binocular depth perception.

    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

    pub_type: 杂志文章

    doi:10.1167/9.5.22

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

    更新日期:2009-05-21 00:00:00

  • fMRI correlates of subjective reversals in ambiguous structure-from-motion.

    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

    pub_type: 杂志文章

    doi:10.1167/12.6.35

    authors: Freeman ED,Sterzer P,Driver J

    更新日期:2012-06-29 00:00:00

  • Global attention facilitates the planning, but not execution of goal-directed reaches.

    abstract::In daily life, humans interact with multiple objects in complex environments. A large body of literature demonstrates that target selection is biased toward recently attended features, such that reaches are faster and trajectory curvature is reduced when target features (i.e., color) are repeated (priming of pop-out)....

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.9.7

    authors: McCarthy JD,Song JH

    更新日期:2016-07-01 00:00:00

  • The relative contribution of noise and adaptation to competition during tri-stable motion perception.

    abstract::Animals exploit antagonistic interactions for sensory processing and these can cause oscillations between competing states. Ambiguous sensory inputs yield such perceptual multistability. Despite numerous empirical studies using binocular rivalry or plaid pattern motion, the driving mechanisms behind the spontaneous tr...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.15.6

    authors: Meso AI,Rankin J,Faugeras O,Kornprobst P,Masson GS

    更新日期:2016-12-01 00:00:00

  • Motion processing at low light levels: Differential effects on the perception of specific motion types.

    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

    pub_type: 杂志文章

    doi:10.1167/8.3.14

    authors: Billino J,Bremmer F,Gegenfurtner KR

    更新日期:2008-03-18 00:00:00

  • Serial dependence in the perception of visual variance.

    abstract::The recent history of perceptual experience has been shown to influence subsequent perception. Classically, this dependence on perceptual history has been examined in sensory-adaptation paradigms, wherein prolonged exposure to a particular stimulus (e.g., a vertically oriented grating) produces changes in perception o...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/18.7.4

    authors: Suárez-Pinilla M,Seth AK,Roseboom W

    更新日期:2018-07-02 00:00:00

  • High reward enhances perceptual learning.

    abstract::Studies of perceptual learning have revealed a great deal of plasticity in adult humans. In this study, we systematically investigated the effects and mechanisms of several forms (trial-by-trial, block, and session rewards) and levels (no, low, high, subliminal) of monetary reward on the rate, magnitude, and generaliz...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/18.8.11

    authors: Zhang P,Hou F,Yan FF,Xi J,Lin BR,Zhao J,Yang J,Chen G,Zhang MY,He Q,Dosher BA,Lu ZL,Huang CB

    更新日期:2018-08-01 00:00:00

  • Head and eye movements and the role of memory limitations in a visual search paradigm.

    abstract::The image information guiding visual behavior is acquired and maintained in an interplay of gaze shifts and visual short-term memory (VSTM). If storage capacity of VSTM is exhausted, gaze shifts can be used to regain information not currently represented in memory. By varying the separation between relevant image regi...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/8.1.7

    authors: Hardiess G,Gillner S,Mallot HA

    更新日期:2008-01-15 00:00:00

  • Temporal dynamics of saccadic distraction.

    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

    pub_type: 杂志文章

    doi:10.1167/9.9.17

    authors: Bompas A,Sumner P

    更新日期:2009-08-28 00:00:00

  • Signs of depth-luminance covariance in 3-D cluttered scenes.

    abstract::In three-dimensional (3-D) cluttered scenes such as foliage, deeper surfaces often are more shadowed and hence darker, and so depth and luminance often have negative covariance. We examined whether the sign of depth-luminance covariance plays a role in depth perception in 3-D clutter. We compared scenes rendered with ...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/18.3.5

    authors: Scaccia M,Langer MS

    更新日期:2018-03-01 00:00:00

  • Motion-induced position shift in stereoscopic and dichoptic viewing.

    abstract::The static envelope of a Gabor patch with a moving sinusoidal carrier appears shifted in the direction of the carrier motion (De Valois & De Valois, 1991). This phenomenon is called motion-induced position shift. Although several motion-processing stages, ranging from low- to high-level processes, may contribute to po...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.13.3

    authors: Hisakata R,Hayashi D,Murakami I

    更新日期:2016-10-01 00:00:00

  • A moving-barber-pole illusion.

    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

    pub_type: 杂志文章

    doi:10.1167/14.5.1

    authors: Sun P,Chubb C,Sperling G

    更新日期:2014-05-01 00:00:00

  • Dynamic interaction between retinal and extraretinal signals in motion integration for smooth pursuit.

    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

    pub_type: 杂志文章

    doi:10.1167/13.13.5

    authors: Bogadhi AR,Montagnini A,Masson GS

    更新日期:2013-11-04 00:00:00

  • Larger visual stimuli are perceived to last longer from time to time: The internal clock is not affected by nontemporal visual stimulus size.

    abstract::Performance on interval timing is often explained by the assumption of an internal clock based on neural counting. According to this account, a neural pacemaker generates pulses, and the number of pulses relating to a physical time interval is recorded by a counter. Thus, the number of accumulated pulses is the intern...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/15.3.5

    authors: Rammsayer TH,Verner M

    更新日期:2015-03-10 00:00:00

  • Adaptive allocation of human visual working memory capacity during statistical and categorical learning.

    abstract::Human brains are finite, and thus have bounded capacity. An efficient strategy for a capacity-limited agent is to continuously adapt by dynamically reallocating capacity in a task-dependent manner. Here we study this strategy in the context of visual working memory (VWM). People use their VWM stores to remember visual...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/19.2.11

    authors: Bates CJ,Lerch RA,Sims CR,Jacobs RA

    更新日期:2019-02-01 00:00:00

  • Crowding is tuned for perceived (not physical) location.

    abstract::In the peripheral visual field, nearby objects can make one another difficult to recognize (crowding) in a manner that critically depends on their separation. We manipulated the apparent separation of objects using the illusory shifts in perceived location that arise from local motion to determine if crowding depends ...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/11.9.2

    authors: Dakin SC,Greenwood JA,Carlson TA,Bex PJ

    更新日期:2011-08-08 00:00:00

  • Effects of gestational length, gender, postnatal age, and birth order on visual contrast sensitivity in infants.

    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

    pub_type: 杂志文章

    doi:10.1167/9.10.19

    authors: Dobkins KR,Bosworth RG,McCleery JP

    更新日期:2009-09-30 00:00:00

  • Roles of visual and non-visual information in the perception of scene-relative object motion during walking.

    abstract::Perceiving object motion during self-movement is an essential ability of humans. Previous studies have reported that the visual system can use both visual information (such as optic flow) and non-visual information (such as vestibular, somatosensory, and proprioceptive information) to identify and globally subtract th...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/jov.20.10.15

    authors: Xie M,Niehorster DC,Lappe M,Li L

    更新日期:2020-10-01 00:00:00

  • The Bouma law of crowding, revised: critical spacing is equal across parts, not objects.

    abstract::Crowding is the inability to identify an object among flankers in the periphery. It is due to inappropriate incorporation of features from flanking objects in perception of the target. Crowding is characterized by measuring critical spacing, the minimum distance needed between a target and flankers to allow recognitio...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/14.6.10

    authors: Rosen S,Chakravarthi R,Pelli DG

    更新日期:2014-12-10 00:00:00

  • Contrast summation across eyes and space is revealed along the entire dipper function by a "Swiss cheese" stimulus.

    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

    pub_type: 杂志文章

    doi:10.1167/11.1.23

    authors: Meese TS,Baker DH

    更新日期:2011-01-27 00:00:00

  • Effect of light level on the reference frames of visual motion processing.

    abstract::It is empirically known that some action-related visual tasks, which may rely on the construction of spatiotopic coordinates, are not well conducted under mesopic vision. The aim of this study was to clarify the effect of light level on the reference frame, such as retinotopic and spatiotopic coordinate bases, associa...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/14.13.6

    authors: Yoshimoto S,Uchida-Ota M,Takeuchi T

    更新日期:2014-11-06 00:00:00

  • The effect of flankers on three tasks in central, peripheral, and amblyopic vision.

    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

    pub_type: 杂志文章

    doi:10.1167/11.1.10

    authors: Levi DM,Carney T

    更新日期:2011-01-10 00:00:00

  • Is the world full of circles?

    abstract::The statistical arrangement of oriented segments in natural scenes was recently proposed to be indicative of a cocircularity rule. In particular, the probability density function of the relative position of two oriented segments was found to be maximal along fixed angles on the plane, consistent with the two segments ...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/2.8.4

    authors: Chow CC,Jin DZ,Treves A

    更新日期:2002-01-01 00:00:00

  • Task precision at transfer determines specificity of perceptual learning.

    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

    pub_type: 杂志文章

    doi:10.1167/9.3.1

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

    更新日期:2009-03-05 00:00:00

  • Updating visual working memory in the change detection paradigm.

    abstract::An updating version of a visual change detection paradigm was used to investigate the behavioral outcomes and event-related potential (ERP) correlates of visual working memory updating. In each trial, participants were either presented with a memory array followed by a test probe, or with two successive memory arrays....

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/15.9.18

    authors: Kessler Y,Rac-Lubashevsky R,Lichtstein C,Markus H,Simchon A,Moscovitch M

    更新日期:2015-01-01 00:00:00

  • Eye guidance during real-world scene search: The role color plays in central and peripheral vision.

    abstract::The visual system utilizes environmental features to direct gaze efficiently when locating objects. While previous research has isolated various features' contributions to gaze guidance, these studies generally used sparse displays and did not investigate how features facilitated search as a function of their location...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.2.3

    authors: Nuthmann A,Malcolm GL

    更新日期:2016-01-01 00:00:00

  • Integration of prior knowledge during haptic exploration depends on information type.

    abstract::When haptically exploring softness, humans use higher peak forces when indenting harder versus softer objects. Here, we investigated the influence of different channels and types of prior knowledge on initial peak forces. Participants explored two stimuli (hard vs. soft) and judged which was softer. In Experiment 1 pa...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/19.4.20

    authors: Zoeller AC,Lezkan A,Paulun VC,Fleming RW,Drewing K

    更新日期:2019-04-01 00:00:00

  • Template optimization and transfer in perceptual learning.

    abstract::We studied how learning changes the processing of a low-level Gabor stimulus, using a classification-image method (psychophysical reverse correlation) and a task where observers discriminated between slight differences in the phase (relative alignment) of a target Gabor in visual noise. The method estimates the intern...

    journal_title:Journal of vision

    pub_type: 杂志文章

    doi:10.1167/16.10.16

    authors: Kurki I,Hyvärinen A,Saarinen J

    更新日期:2016-08-01 00:00:00