A comparison of temporal integration in children with a specific reading disability and normal readers.


:Previous research has suggested that whereas some techniques show that subjects with a specific reading disability (SRD) have greater visible persistence than controls, a temporal integration of form technique does not. It has been suggested that the failure of the temporal integration task to show a difference results from the spatial separation between stimuli used in the technique. In this study SRD and control subjects were compared on a new version of a temporal integration task, under two conditions varying the spatial separation of elements in the display. It was predicted that there would be no difference between groups when spatial separation was large, but that the SRD subjects would show greater visible persistence at small separations. Neither prediction was confirmed, denying previous explanations of why the temporal integration task does not discriminate between groups. Analysis of errors showed that the result was not due to inattention nor to a general deficit on the part of the SRD subjects.


Vision Res


Vision research


Hogben JH,Rodino IS,Clark CD,Pratt C




Has Abstract


1995-07-01 00:00:00














  • Attentional selection of overlapped shapes: a study using brief shape aftereffects.

    abstract::Prior studies using brief stimulus sequences revealed "opponent shape aftereffects", indicative of direct opponent coding of global shape attributes such as aspect ratio, skew, taper, curvature, and convexity (perhaps in IT). Further, aftereffects from overlapped opponent pairs of adaptor shapes (e.g., concave and con...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Suzuki S

    更新日期:2003-03-01 00:00:00

  • The effect of various anaesthetics on the spatial tuning of two major wave peaks in the transient pattern electroretinogram of the cat: evidence for pattern and luminance components.

    abstract::The main PERG component of the transient contrast reversal pattern electroretinogram (PERG) in cats was a negative wave (3.5 microV average, SD 1.7 microV) peaking at about 130 msec (N130) with a spatial resolution above 5.5 c/deg, close to behavioural estimates. The early positivity (P35) was more variable, smaller a...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Vaegan,Arora A,Crewther SG,Millar TJ

    更新日期:1990-01-01 00:00:00

  • Temporal frequency limits for stereoscopic apparent motion processes.

    abstract::Temporal processing limits were determined for two types of stereoscopic percept associated with square wave disparity alternation: apparent depth motion and depth pulsation. The stimuli were dynamic random dot stereograms containing no monocular cues for either target motion or disparity change. The percept of a sing...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Norcia AM,Tyler CW

    更新日期:1984-01-01 00:00:00

  • Darkness filling-in: a neural model of darkness induction.

    abstract::A model of darkness induction based on a neural filling-in mechanism is proposed. The model borrows principles from both Land's Retinex theory and BCS/FCS filling-in model of Grossberg and colleagues. The main novel assumption of the induction model is that darkness filling-in signals, which originate at luminance bor...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Rudd ME,Arrington KF

    更新日期:2001-12-01 00:00:00

  • Sine-wave gratings: scale invariance and spatial integration at suprathreshold contrast.

    abstract::Thresholds for the detection of contrast differences and spatial frequency differences present in a sine-wave grating with suprathreshold contrast were measured as a function of the size of the grating and the number of cycles in the grating. For gratings with the same number of cycles, these thresholds are found to b...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Jamar JH,Koenderink JJ

    更新日期:1983-01-01 00:00:00

  • Adaptation-induced alteration of the relation between response amplitude and contrast in cat striate cortical neurones.

    abstract::The activity of neurones in cat striate cortex in response to laterally moving sinusoidal gratings has been examined. The effect of prolonged visual stimulation with a high contrast moving grating stimulus of optimal orientation and spatial frequency was investigated in terms of the changes wrought in the relationship...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Dean AF

    更新日期:1983-01-01 00:00:00

  • A comparison of stereo and vernier acuity within spatial channels as a function of distance from fixation.

    abstract::We have used DOG stimuli to selectively stimulate size tuned channels within the visual system in order to investigate the relationship between stereo and vernier acuity. We measured these acuities as a function of spatial frequency, retinal eccentricity and distance from the fixation point in depth. Both hyperacuitie...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Schor CM,Badcock DR

    更新日期:1985-01-01 00:00:00

  • Binocular summation and efficient coding.

    abstract::Two eyes are better than one at detecting a pattern, an advantage termed binocular summation. It is widely believed that binocular summation is mediated by neurons that sum the two eyes' inputs. Here we suggest an alternative model based on a model of binocular interactions proposed by Cohn, Leong & Lasley (Vision Res...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Kingdom FAA,Woessner P

    更新日期:2021-02-01 00:00:00

  • The visible persistence of stimuli in stroboscopic motion.

    abstract::This paper reports an improved paradigm to measure visible persistence. The stimulus is a pair of lines stroboscopically displayed in successive positions moving in opposite directions. The subjects' judgement of simultaneous appearance of all the presented lines is used to estimate visible persistence. This paradigm ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Farrell JE,Pavel M,Sperling G

    更新日期:1990-01-01 00:00:00

  • Kinetic depth effect and optic flow--I. 3D shape from Fourier motion.

    abstract::Fifty-three different 3D shapes were defined by sequences of 2D views (frames) of dots on a rotating 3D surface. (1) Subjects' accuracy of shape identifications dropped from over 90% to less than 10% when either the polarity of the stimulus dots was alternated from light-on-gray to dark-on-gray on successive frames or...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Dosher BA,Landy MS,Sperling G

    更新日期:1989-01-01 00:00:00

  • Directional bias of illusory stream caused by relative motion adaptation.

    abstract::Enigma is an op-art painting that elicits an illusion of rotational streaming motion. In the present study, we tested whether adaptation to various motion configurations that included relative motion components could be reflected in the directional bias of the illusory stream. First, participants viewed the center of ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Tomimatsu E,Ito H

    更新日期:2016-07-01 00:00:00

  • Image formation by bifocal lenses in a trilobite eye?

    abstract::In this work we report on a unique and ancient type of eye, in which the lower surface of the upper calcite lens units possessed an enigmatic central bulge making the dioptric apparatus similar to a bifocal lens. This eye belonged to the trilobite Dalmanitina socialis, which became extinct several hundred million year...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Gál J,Horváth G,Clarkson EN,Haiman O

    更新日期:2000-01-01 00:00:00

  • Quantifying object salience by equating distractor effects.

    abstract::It is commonly believed that objects viewed in certain contexts may be more or less salient. Measurements of salience have usually relied on asking observers "How much does this object stand out against the background?". In this study, we measured the salience of objects by assessing the distraction they produce for s...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Huang L,Pashler H

    更新日期:2005-06-01 00:00:00

  • Global motion perception: interaction of the ON and OFF pathways.

    abstract::A number of experiments were conducted to investigate the interaction of the ON and OFF pathways in the processing of global-motion signals. The stimulus employed was a variant of that used by Newsome and Pare [(1988) Journal of Neuroscience, 8, 2201-2211] in which a small subset of dots move in a common (global-motio...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Edwards M,Badcock DR

    更新日期:1994-11-01 00:00:00

  • Spatial resolution of the Galago.

    abstract::The spatial vision of two adult galagos (Galago crassicaudatus) was assessed using a two choice discrimination task to determine their contrast sensitivity. Both contrast sensitivity functions exhibited low and high spatial frequency attenuation with the peak sensitivity at 1%. For one animal, the peak occurred at 0.5...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Langston A,Casagrande VA,Fox R

    更新日期:1986-01-01 00:00:00

  • Spatial frequency tuning of human stereopsis.

    abstract::A masking paradigm was employed to measure the spatial frequency selectivity of channels underlying human stereopsis. Observers viewed spatially filtered (0.4 octave bandwidth) random-dot stereograms in which a disparate bar appeared in either the top or bottom half of the display; superimposed on one RDS half-image w...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Yang Y,Blake R

    更新日期:1991-01-01 00:00:00

  • The saccadic size-latency phenomenon explored: Proximal target size is a determining factor in the saccade latency.

    abstract::Saccade latencies are known to increase for targets presented close to fixation. Recently, it was shown that not only target eccentricity, but the size of a proximal saccade target also plays a crucial role: latencies increase rapidly with increasing target size. Interestingly, these latency increases are greater than...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: De Vries JP,Azadi R,Harwood MR

    更新日期:2016-12-01 00:00:00

  • Bloch's law and the dynamics of feature fusion.

    abstract::How the visual brain integrates temporally dispersed information is an open question. Often, it is assumed that the visual system simply sums light over a certain period of time (e.g. Bloch's law). However, in feature fusion, information presented later dominates, suggesting complex temporal dynamics that cannot be de...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Scharnowski F,Hermens F,Herzog MH

    更新日期:2007-08-01 00:00:00

  • Efficient bubbles for visual categorization tasks.

    abstract::Bubbles is a classification image technique that randomly samples visual information from input stimuli to derive the diagnostic features that observers use in visual categorization tasks. To reach statistical significance, Bubbles performs an exhaustive and repetitive search in the stimulus space. To reduce the searc...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Wang HF,Friel N,Gosselin F,Schyns PG

    更新日期:2011-06-21 00:00:00

  • Models for the description of angioscotomas.

    abstract::To describe small scotomas in visual field examinations several statistical models are proposed and applied to the evaluation of angioscotoma in 13 ophthalmologically normal subjects. A special perimetric grid is used where thresholds can be estimated along a line of narrow-spaced test points which crosses the predict...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Benda N,Dietrich T,Schiefer U

    更新日期:1999-05-01 00:00:00

  • Modulation sensitivity of ganglion cells in peripheral retina of macaque.

    abstract::There is ample psychophysical evidence that flicker is more salient in the peripheral than the central visual field, but the physiological basis of this eccentricity-dependant change is unclear. Here, we compared responsivity to temporal modulation of ganglion cells in central and peripheral primate retina. Above 30 H...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Solomon SG,Martin PR,White AJ,Rüttiger L,Lee BB

    更新日期:2002-12-01 00:00:00

  • Position, size and luminosity of phosphenes generated by direct optic nerve stimulation.

    abstract::Pulses of low intensity current, delivered through a cuff electrode chronically implanted around the optic nerve of a blind retinitis pigmentosa patient generate visual sensations. These phosphenes are obtained at lower thresholds for a train of stimuli than for single pulses, which suggests the existence of a spatial...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Delbeke J,Oozeer M,Veraart C

    更新日期:2003-04-01 00:00:00

  • Latencies and discharge patterns of color-opponent neurons in the rainbow trout optic tectum.

    abstract::Although color-opponent neurons appear to subserve color vision, precisely how these cells encode hue is still not clear. Single-unit, extracellular recordings from the rainbow trout optic tectum were made in order to examine the possible role of action potential timing in coding chromatic stimuli. We found that color...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: McDonald CG,Hawryshyn CW

    更新日期:1999-08-01 00:00:00

  • Influence of foveal distractors on saccadic eye movements: a dead zone for the global effect.

    abstract::Three experiments investigated the global effect with foveal distractors displayed in the same hemifield as more eccentric saccade targets. Distractors were x-letter strings of variable length and targets corresponded to the central letter of letter strings (e.g., 'xxxkxxx'). Results showed that only foveal distractor...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Vitu F,Lancelin D,Jean A,Farioli F

    更新日期:2006-12-01 00:00:00

  • Visual acuity versus letter contrast sensitivity in early cataract.

    abstract::Large and small letter contrast sensitivity and visual acuity were assessed in 37 elderly eyes (mean VA -0.01 logMAR, Snellen 6/6) and their lens opacities were categorised and graded using the LOCS III system. Large letter contrast sensitivity was often not reduced in cataract from age-matched normal values and provi...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Elliott DB,Situ P

    更新日期:1998-06-01 00:00:00

  • Impurity of recombinant adeno-associated virus type 2 affects the transduction characteristics following subretinal injection in the rat.

    abstract::We recently reported that different purification methods of recombinant adeno-associated virus type 2 (rAAV2) affect the transduction characteristics following subretinal injection. In this study, we examined the roles of contaminant proteins from the HEK-293 cells and helper adenovirus, inactivation of helper adenovi...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Shen WY,Lai YK,Lai CM,Rakoczy PE

    更新日期:2004-02-01 00:00:00

  • Backward masking suppresses collinear facilitation in the visual cortex.

    abstract::Perceptual facilitation in detecting low-contrast Gabor patches (GPs) is induced by collinearly oriented high-contrast flankers. Our recent Visual Evoked Potentials (VEPs) study provided new physiological evidence for these collinear interactions, reflected by nonlinear modulation of multiple waveform components and f...

    journal_title:Vision research

    pub_type: 临床试验,杂志文章


    authors: Sterkin A,Yehezkel O,Bonneh YS,Norcia A,Polat U

    更新日期:2009-07-01 00:00:00

  • Motion capture anisotropy.

    abstract::Two uncorrelated random dot patterns were superimposed and alternated to produce dynamic incoherent noise. When a low spatial frequency sine wave grating was optically superimposed on this noise and moved in step with the alternation of the two frames, the incoherent motion was masked and all the dots were seen to adh...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Ramachandran VS,Cavanagh P

    更新日期:1987-01-01 00:00:00

  • Responses and receptive fields of amacrine cells and ganglion cells in the salamander retina.

    abstract::Retinal amacrine cells (ACs) and ganglion cells (GCs) have been shown to display large morphological diversity, and here we show that four types of ACs and three types of GCs exhibit physiologically-distinguishable properties. They are the sustained ON ACs; sustained OFF ACs; transient ON-OFF ACs; transient ON-OFF ACs...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Zhang AJ,Wu SM

    更新日期:2010-03-17 00:00:00

  • Perceptual comparison of features within and between objects: a new look.

    abstract::The integration of spatially distinct elements into coherent objects is a fundamental process of vision. Yet notwithstanding an extensive literature on perceptual grouping, we still lack a clear understanding of the representational consequences of grouping disparate visual locations. We investigated this question in ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Harrison SJ,Feldman J

    更新日期:2009-11-01 00:00:00