The effect of complex motion pattern on speed perception.


:We recently reported a new motion illusion where dots in expanding random dot patterns appear to move faster than those in rotation patterns despite having the same physical speed distributions. In the current paper, we compared expansion and rotation motion to translational motion and found that the perceived dot speed in translation patterns was between that of expansion and rotation. We also explored contraction motion and found subjects perceived dots in contracting patterns as moving slightly faster than those in expanding patterns and much faster than those in rotating patterns. Finally, we found that stimulus presentation order in a trial plays an important role in determining the magnitude of the speed illusion--the effect is greater when the subjectively faster stimulus is viewed second (e.g., expansion after rotation). The dependence on stimulus order is greatest when comparing complex motion patterns with large subjective speed differences. This phenomenon is unlikely to be explained in terms of channel fatigue or adaptation.


Vision Res


Vision research


Geesaman BJ,Qian N




Has Abstract


1998-05-01 00:00:00














  • Effects of feature-based attention on the motion aftereffect at remote locations.

    abstract::Previous studies have shown that attention to a particular stimulus feature, such as direction of motion or color, enhances neuronal responses to unattended stimuli sharing that feature. We studied this effect psychophysically by measuring the strength of the motion aftereffect (MAE) induced by an unattended stimulus ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Boynton GM,Ciaramitaro VM,Arman AC

    更新日期:2006-09-01 00:00:00

  • Increasing the temporal g(r)ain: double-pulse resolution is affected by the size of the attention focus.

    abstract::Spatial cueing of transient attention has recently been shown to reduce temporal sensitivity. We investigated how the size of the sustained attentional focus influences double-pulse resolution (DPR) thresholds mapped across the visual field in a sample of 95 healthy subjects using a 9-fold interleaved adaptive algorit...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Poggel DA,Treutwein B,Calmanti C,Strasburger H

    更新日期:2006-09-01 00:00:00

  • Spatial summation of cone mechanisms in goldfish.

    abstract::Experiments were performed to evaluate the spatial summation areas of the u.v.-, blue-, green- and red-sensitive cone mechanisms of goldfish. All the cone mechanisms were in compliance of Ricco's law, summing target radiance linearly over a certain range of target diameters with an average slope of 2.4. The critical d...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Hawryshyn CW

    更新日期:1991-01-01 00:00:00

  • Almost complete colour constancy achieved with full-field adaptation.

    abstract::A successive asymmetric colour-matching task was used to study the changes in colour appearance of simulated Munsell samples. Colour shifts were induced with two Planckian illuminants, standard illuminant A (u'=0.256, v'=0.524) and illuminant S (u'=0.174, v'=0.392). Measurements were conducted with a 20 degrees field ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Murray IJ,Daugirdiene A,Vaitkevicius H,Kulikowski JJ,Stanikunas R

    更新日期:2006-10-01 00:00:00

  • Contrast discrimination deficits in retinitis pigmentosa are greater for stimuli that favor the magnocellular pathway.

    abstract::Luminance contrast discrimination was measured in 14 patients with retinitis pigmentosa (RP) and 14 control observers with normal vision, using steady-pedestal and pulsed-pedestal paradigms [Pokorny, J., & Smith, V. C. (1997). Psychophysical signatures associated with magnocellular and parvocellular pathway contrast g...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Alexander KR,Pokorny J,Smith VC,Fishman GA,Barnes CS

    更新日期:2001-03-01 00:00:00

  • On the relationship between deformation and perceived surface slant.

    abstract::A compelling impression of surface slant is produced by random dot displays depicting deformation and translation alone. A simple model of slant estimation based upon deformation is shown to capture quantitatively both the perceived slant in this situation and the distortion in perceived slant produced when constant d...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Freeman TC,Harris MG,Meese TS

    更新日期:1996-01-01 00:00:00

  • Opponent-processing effects on the field spectral sensitivity of pattern-elicited electroretinograms.

    abstract::Field spectral sensitivities of the pattern-elicited electroretinogram (PERG) were obtained from two subjects using a modified version of Stiles' two-color increment threshold procedure. A 540 nm checkerboard test pattern of 38 degrees dia was alternated at 8 Hz on a uniform adapting field of the same size. Test inten...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Wu S

    更新日期:1992-11-01 00:00:00

  • Comparing the retinal structures and functions in two species of gulls (Larus delawarensis and Larus modestus) with significant nocturnal behaviours.

    abstract::Ring-billed gulls (Larus delawarensis) and gray gulls (Larus modestus) are two species active both by day and night. We have investigated the retinal adaptations that allow the diurnal and nocturnal behaviours of these two species. Electroretinograms and histological analyses show that both species have a duplex retin...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Emond MP,McNeil R,Cabana T,Guerra CG,Lachapelle P

    更新日期:2006-09-01 00:00:00

  • Positional uncertainty in peripheral and amblyopic vision.

    abstract::Three experiments were performed to examine positional acuity and the role of spatial sampling in central, peripheral and amblyopic vision. In the first experiment, 3-line bisection acuity was compared to grating acuity. In normal foveal vision bisection acuity represents a hyperacuity. In anisometropic amblyopes, bis...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Levi DM,Klein SA,Yap YL

    更新日期:1987-01-01 00:00:00

  • Transient and sustained components of the pupil response evoked by achromatic spatial patterns.

    abstract::The present study provides new clues about visual processes underlying the human pupillary responses evoked by achromatic spatial patterns. The pupillary responses can be modeled as a combination of two processes, a temporally transient process which saturates with increasing contrast and a temporally sustained proces...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Young RS,Kennish J

    更新日期:1993-11-01 00:00:00

  • How different types of scenes affect the Subjective Visual Vertical (SVV) and the Perceptual Upright (PU).

    abstract::Different scenes contain varying cues to the direction of gravity. Do scenes with stronger cues differentially affect the ability of a scene to influence the direction of the Subjective Visual Vertical (SVV) and the Perceptual Upright (PU)? Using indoor, outdoor, natural and man-made scenes we asked participants to ju...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Haji-Khamneh B,Harris LR

    更新日期:2010-08-06 00:00:00

  • Neural synergy in visual grouping: when good continuation meets common fate.

    abstract::A modified version of the 'path finder' display consisting of many small oriented Gabor patches was used to study the joint contributions of spatial and temporal structures to shape perception. A two-interval forced-choice procedure measured detectability of curved 'paths' defined by orientation ('good continuation') ...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Lee SH,Blake R

    更新日期:2001-07-01 00:00:00

  • The spatial mechanisms mediating symmetry perception.

    abstract::This paper examines the role of spatial frequency and orientation tuned channels in the perception of visual symmetry. Subjects discriminated between band-pass filtered, white noise textures that either did or did not contain vertical bilateral symmetry (VBS, i.e., around a vertical midline) as a function of the spati...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Dakin SC,Hess RF

    更新日期:1997-10-01 00:00:00

  • Biases in judgments of separation and orientation of elements belonging to different clusters.

    abstract::If two demarcated dots are embedded in separate clusters of similar dots in off centre positions, their perceived separation is biased towards the separation between the centres of the clusters (Morgan, Hole, & Glennerster, 1990). We replicated these results and went on to determine whether a similar bias is present f...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Seizova-Cajic T,Gillam B

    更新日期:2006-08-01 00:00:00

  • The coding and updating of visuospatial memory for goal-directed reaching and pointing.

    abstract::In this review we discuss evidence from psychophysical, electrophysiological, and neuroimaging studies that demonstrates the updating of remembered visual space in a reference frame that is centred on the eye. We then extend these findings by discussing recent work from our lab. Specifically, we address eye-centred up...

    journal_title:Vision research

    pub_type: 杂志文章,评审


    authors: Thompson AA,Henriques DY

    更新日期:2011-04-22 00:00:00

  • Electrophysiological correlates of positive and negative afterimages.

    abstract::We report here measurements of visual evoked potential (VEP) activity after induction of afterimages in human observers. Drifting gratings normally produce no measurable phase synchronized VEP. However, after an afterimage of a high contrast grating of the same orientation and spatial frequency of that of the drifting...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Burr DC,Fiorentini A,Morrone MC

    更新日期:1987-01-01 00:00:00

  • Directional changes in the vestibular ocular response as a result of adaptation to optical tilt.

    abstract::Before and after exposure to clockwise optical tilt, subjects' compensatory eye movements were recorded, as the head was oscillated around a vertical axis by the experimenter. An analysis of the horizontal and vertical components of eye movements showed a change in eye movement path in the clockwise direction. This co...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Callan JW,Ebenholtz SM

    更新日期:1982-01-01 00:00:00

  • Effect of 2-amino-4-phosphonobutyrate on ERG OFF-response after glycinergic and GABAergic blockade.

    abstract::Superfusion with 200 microM 2-amino-4-phosphonobutyrate (APB) of dark and chromatically adapted frog eyecups caused marked potentiation of the ERG OFF-response (d-wave). Blockade of the glycinergic synapses by strychnine did not change this effect at all. Blockade of the GABAergic synapses by picrotoxin slightly dimin...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Popova E,Kupenova P,Vitanova L,Mitova L

    更新日期:1995-07-01 00:00:00

  • An oblique effect in parafoveal motion perception.

    abstract::An observer's ability to discriminate the angular direction of a moving grating depends on the grating orientation. Observers can more accurately judge the angular direction of vertical or horizontal gratings than oblique gratings. We discovered that this oblique effect becomes very large at high spatial frequencies i...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Coletta NJ,Segu P,Tiana CL

    更新日期:1993-12-01 00:00:00

  • Color appearance: Maxwellian vs. Newtonian views.

    abstract::Color appearance can be studied using either Maxwellian-view optical systems or natural viewing (Newtonian-view). We show that the results are not precisely comparable when the natural pupil is appreciably larger than the entrance pupil of the Maxwellian beam. The wavelength for any given hue that is obtained from one...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Gordon J,Abramov I

    更新日期:2008-08-01 00:00:00

  • Some observations on the masking effects of two-dimensional stimuli.

    abstract::Gratings that differ in orientation by as much as 62.5 deg from that of a signal grating raise the signal's threshold by nearly a log unit. The spatial-frequency tuning of the masking effect reaches a maximum slightly below the spatial frequency of the maskers but far from that of any quadratic distortion product. Fur...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Derrington AM,Henning GB

    更新日期:1989-01-01 00:00:00

  • Effects of adapting luminance and stimulus contrast on the temporal and spatial limits of short-range motion.

    abstract::Perception of short-range motion was studied as a function of adapting luminance and of stimulus contrast in computer simulations and in psychophysical experiments. The stimuli were random dots plotted on an oscilloscope in two sequential frames, separated by an inter-stimulus interval (ISI). Both in the simulations a...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Dawson M,Di Lollo V

    更新日期:1990-01-01 00:00:00

  • Preattentive equivalence of multicomponent Gabor textures in the central and peripheral visual field.

    abstract::Similarity ratings were obtained to determine the minimum number of Gabor components that would produce a comparison texture that appeared preattentively similar to a 64-component standard texture. All textures were chosen to be both specifiable by a relatively small number of localized spectral components and suffici...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Geri GA,Lyon DR,Zeevi Y

    更新日期:1995-02-01 00:00:00

  • Validity of the Holmes-Wright lantern as a color vision test for the rail industry.

    abstract::A simulated field test was designed to determine whether the Holmes-Wright A lantern (HWA) is a valid color vision test for the rail industry. The simulation replicated viewing rail signal lights at 0.8 km distance under daylight conditions. Using the worst-normal as the maximum number of allowable errors on the simul...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Hovis JK,Oliphant D

    更新日期:1998-11-01 00:00:00

  • Variability in constancy of the perceived surface reflectance across different illumination statistics.

    abstract::In contrast to the classical findings of lightness constancy, recent psychophysical studies show the strong dependency of the perceived reflectance of a surface on the structure of the natural illumination. The present study examined this inconstancy for systematic variations in the light field and an image-based expl...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Motoyoshi I,Matoba H

    更新日期:2012-01-15 00:00:00

  • Performance of photovoltaic arrays in-vivo and characteristics of prosthetic vision in animals with retinal degeneration.

    abstract::Loss of photoreceptors during retinal degeneration leads to blindness, but information can be reintroduced into the visual system using electrical stimulation of the remaining retinal neurons. Subretinal photovoltaic arrays convert pulsed illumination into pulsed electric current to stimulate the inner retinal neurons...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Lorach H,Goetz G,Mandel Y,Lei X,Galambos L,Kamins TI,Mathieson K,Huie P,Dalal R,Harris JS,Palanker D

    更新日期:2015-06-01 00:00:00

  • M- and L-cones in early infancy: III. Comparison of genotypic and phenotypic markers of color vision in infants and adults.

    abstract::Genetic analyses were performed on five male children (approximately 3 years), two suspect color-normals and three suspects for congenital color vision deficiencies. These classifications were based on visually-evoked potential (VEP) responses to M- and L-cone-isolating stimuli obtained in a previous study when each s...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Bieber ML,Werner JS,Knoblauch K,Neitz J,Neitz M

    更新日期:1998-11-01 00:00:00

  • Habituation-like effects cause a significant decrease in response in MRI neuroactivation during visual stimulation.

    abstract::A wide range of rest/stimulus cycle durations (40-360 sec) is reported to have been used by various groups for MRI neuroactivation studies of the visual cortex. In this paper we demonstrate a clear habituation-like response for longer cycle durations which results in a halving of apparent activation between cycle dura...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Condon B,McFadzean R,Hadley DM,Bradnam MS,Shahani U

    更新日期:1997-05-01 00:00:00

  • The visual perception of plane tilt from motion in small field and large field: psychophysics and theory.

    abstract::Subjects indicated the tilt of dotted planes rotating in depth, in monocular viewing, under perspective projection. The responses depended on the FOV (field of view) and on the angle W between the tilt and frontal translation (orthogonal to the rotation axis). Response accuracy increased with the FOV, and decreased wi...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Zhong H,Cornilleau-Pérès V,Cheong LF,Yeow GM,Droulez D

    更新日期:2006-10-01 00:00:00

  • Orientation selectivity in cats and humans assessed by masking.

    abstract::A two-alternative, spatial forced-choice procedure was used to measure contrast thresholds for detection of sinusoidal gratings that appeared within one-dimensional random noise. The orientation of the noise was symmetrically varied relative to the orientation of the test grating to derive estimates of orientation tun...

    journal_title:Vision research

    pub_type: 杂志文章


    authors: Blake R,Holopigian K

    更新日期:1985-01-01 00:00:00