Dynamic control of ocular disaccommodation: first and second-order dynamics.

abstract：:Growth and decay characteristics of the tilt aftereffect were studied for aftereffects induced by normal or continuous adaptation routines, and for aftereffects induced by successive or spaced adaptation to the same or different orientations on an adapt-partial decay-readapt schedule. In the continuous adaptation cond...

journal_title：Vision research

authors： Magnussen S,Johnsen T

更新日期：1986-01-01 00:00:00

abstract：:The nominally steady-state accommodation response exhibits temporal variations which can be characterized by two dominant regions of activity; a low frequency component (LFC < 0.6 Hz) and a high frequency component (1.0 < or = HFC < or = 2.1 Hz). There is no consensus as to the relative contribution made by each of th...

journal_title：Vision research

authors： Gray LS,Winn B,Gilmartin B

更新日期：1993-10-01 00:00:00

abstract：:The effects of fourth nerve palsy on the vestibulo-ocular reflex (VOR) had not been systematically investigated. We used the magnetic scleral search coil technique to study the VOR in patients with unilateral fourth nerve palsy during sinusoidal head rotations in yaw, pitch and roll at different frequencies. In darkne...

journal_title：Vision research

authors： Wong AM,Sharpe JA,Tweed D

更新日期：2002-08-01 00:00:00

abstract：:Prolonged inspection of moving stimuli causes stationary stimuli to appear moving in the opposite direction to the adapting stimulus (the Waterfall effect). It has been claimed that distracting the viewer's attention from the adapting stimulus by a secondary task reduces the strength of adaptation. However, the method...

journal_title：Vision research

authors： Morgan MJ

更新日期：2012-02-15 00:00:00

abstract：:When a horizontal bar is presented after a single dot is shown at one of its ends, an illusory motion is seen which has been dubbed "motion induction" in the literature. The phenomenon has been attributed to a facilitation process which asymmetrically modulates the inputs to motion detectors, for instance by some sort...

journal_title：Vision research

authors： Zanker JM

更新日期：1997-07-01 00:00:00

abstract：:In typical binocular rivalry demonstrations, disparate images presented in corresponding locations to the two eyes are found to alternate perceptually over time. Alternation in perception can occur even if the images presented to the two eyes do not overlap, if they are sufficiently close in space. This implies a spat...

journal_title：Vision research

authors： Nichols DF,Wilson HR

更新日期：2009-07-01 00:00:00

abstract：:By presenting oriented Gabor patches either monocularly or binocularly, we dissociated retinal orientation from perceived tilt and perceived slant. After adapting to binocular patches, with zero apparent tilt and non-zero slant, small tilt after-effects (TAEs) and large slant after-effects (SAE) were measured. Adaptin...

journal_title：Vision research

authors： Adams WJ,Mamassian P

更新日期：2002-10-01 00:00:00

abstract：:Visual search for a colour target in distractors of two other colours is dramatically affected by the configuration of the colours in CIE (x, y) space. To a first approximation, search is difficult when a target's chromaticity falls directly between (i.e. is not linearly separable from) two distractor chromaticities, ...

journal_title：Vision research

authors： Bauer B,Jolicoeur P,Cowan WB

更新日期：1999-08-01 00:00:00

abstract：:Quantitative Southern blotting and PCR/RFLP analysis were used to determine the number and ratio of long-wave-sensitive (L-) and mid-wave-sensitive (M-) opsin genes in 25 colour-normal caucasian males. The average observed ratio was 1:2.8 +/- 1.2 for Southern blot analysis and 1:3.0 +/- 1.7 for PCR/RFLP analysis. Thus...

journal_title：Vision research

authors： Wolf S,Sharpe LT,Knau H,Wissinger B

更新日期：1998-11-01 00:00:00

abstract：:We investigated the perception of local surface orientation on a simple smooth object, under several different illumination conditions. The perceived local orientation was determined for several points on the surface and quantified as slant and tilt of the local tangent plane. We found an underestimation of the percei...

journal_title：Vision research

authors： Mamassian P,Kersten D

更新日期：1996-08-01 00:00:00

abstract：:The intention of this series of experiments was to determine the extent to which the pathways sensitive to first-order and second-order motion are independent of one another at, and above, the level of global motion integration. We used translational, radial and rotational motion stimuli containing luminance-modulated...

journal_title：Vision research

authors： Aaen-Stockdale C,Ledgeway T,McGraw P,Hess RF

更新日期：2012-09-01 00:00:00

abstract：:We present a method for recording eye-head movements with the magnetic search coil technique in a small external magnetic field. Since magnetic fields are typically non-linear, except in a relative small region in the center small field frames have not been used for head-unrestrained experiments in oculomotor studies....

journal_title：Vision research

authors： Thomassen JS,Benedetto GD,Hess BJ

更新日期：2010-06-18 00:00:00

abstract：:Non-Fourier motion is now commonplace in research on visual motion perception, yet lacks a computational framework. This paper examines this issue based on the observation that many non-Fourier motion stimuli have a simple characterization in the frequency domain, in terms of oriented power distributions that lie alon...

journal_title：Vision research

authors： Fleet DJ,Langley K

更新日期：1994-11-01 00:00:00

abstract：:Some aspects of attentional processing are known to decline with normal aging. To understand how age affects the attentional control of perceptual stability, we investigated age-related changes in voluntarily controlled perceptual rivalry. Durations of the dominant percept, produced by an ambiguous Rubin vase-faces fi...

journal_title：Vision research

authors： Aydin S,Strang NC,Manahilov V

更新日期：2013-01-25 00:00:00

abstract：:In order to assess the contribution of high spatial frequency channels (i.e. local, edge-dependent mechanisms) to the grating induction effect, grating induction magnitude was measured as a function of systematic amounts of blurring of the inducing/test field boundary for four test field heights which spanned a two oc...

journal_title：Vision research

authors： McCourt ME,Blakeslee B

更新日期：1993-12-01 00:00:00

abstract：:Refractive error, higher order aberrations (HOA), axial length (AL), anterior chamber depth (ACD) and average corneal radius of curvature were measured after cycloplegia from 166 emmetropic participants at the Sydney Myopia Study (SMS, 2004-2005, age 12.63 ± 0.48 years). Measurements were repeated approximately 5 year...

journal_title：Vision research

authors： Philip K,Sankaridurg P,Holden B,Ho A,Mitchell P

更新日期：2014-12-01 00:00:00

abstract：:We studied the detectability of dichoptically presented vertical grating patterns that varied in the ratio of the contrasts presented to the two eyes. The resulting threshold data fall on a binocular summation contour well described by a power summation equation with an exponent near 2. We studied the effect of adding...

journal_title：Vision research

authors： Anderson PA,Movshon JA

更新日期：1989-01-01 00:00:00

abstract：:Three experiments examined the effects of using informative verbal and pictorial cues on participants' abilities to perform visual search. By providing participants with more time to encode the cues than had been used previously, all three experiments revealed long-lasting pictorially cued search advantages that stabi...

journal_title：Vision research

authors： Knapp WH 3rd,Abrams RA

更新日期：2012-10-15 00:00:00

abstract：:In three experiments, the effects of irrelevant visual information on the time to initiate and to complete a simple movement of the hand in response to a visual signal were studied in patients with a diagnosis of Parkinson's disease, and in age-matched normal controls. Subjects gazed at the centre of a TV monitor and ...

journal_title：Vision research

authors： McDowell SA,Harris J

更新日期：1997-12-01 00:00:00

abstract：:Investigations of binocular visual direction have concentrated mainly on stationary objects. Eye positions were generally not measured and binocular fixation was assumed to be perfect. During the viewing of stationary objects, vergence errors are not negligible but small. During the viewing of moving objects, however,...

journal_title：Vision research

authors： Erkelens CJ,Van EE R

更新日期：1997-07-01 00:00:00

abstract：:The hyperpolarizing responses to light were recorded intracellularly from red cones of the turtle, Pseudemys scripta elegans. Pairs of slit stimuli were flashed alone or together at various intensities, one slit positioned on the receptive field center and the other displaced 30 microns. The peak amplitude of the resp...

journal_title：Vision research

authors： Pluvinage V,Green DG

更新日期：1990-01-01 00:00:00

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

authors： Suzuki S

更新日期：2003-03-01 00:00:00

abstract：:Three red/green blind observers (dichromats) performed a wavelength discrimination task over a wide range of intensity levels. As expected, discrimination failed in the entire red/green spectral range at the low intensities typically used in wavelength discrimination experiments, but at very high intensities (at or ab...

journal_title：Vision research

authors： McMahon MJ,MacLeod DI

更新日期：1998-04-01 00:00:00

abstract：:A geometrical method of calculating retinal magnification factor at the limits of the retinal field, adjacent to the ora terminalis, is described. The method is applied to the eyes of 11 mammalian and avian species, using new anatomical measurements and data from the literature. In the human and monkey eye, magnificat...

journal_title：Vision research

authors： Holden AL,Hayes BP,Fitzke FW

更新日期：1987-01-01 00:00:00

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

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

更新日期：2001-03-01 00:00:00

abstract：:Two-frame random-element kinematograms were used to study the matching algorithm employed by the visual system to keep track of moving elements. Previous data have shown that the maximum spatial displacement detectable (dmax) for random-dot kinematogram stimuli increases both with increasing dot size and with decreasi...

journal_title：Vision research

authors： Eagle RA,Rogers BJ

更新日期：1996-02-01 00:00:00

abstract：:We have found evidence for ultraviolet visual capabilities in a Lake Malawi cichlid fish, Metriaclima zebra. Microspectrophotometry of single cones revealed a visual pigment with peak sensitivity at 368+/-4 nm. M. zebra also expresses a putative ultraviolet opsin gene whose sequence is closely related to the SWS-1 ops...

journal_title：Vision research

authors： Carleton KL,Hárosi FI,Kocher TD

更新日期：2000-01-01 00:00:00

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

authors： Geri GA,Lyon DR,Zeevi Y

更新日期：1995-02-01 00:00:00

abstract：:It is well known how early visual experience is critical for the development of multisensory processing abilities, and for this reason an early vision impairment could hinder the transfer of different sensory information during the exploration and recognition of the surrounding environment. Recently, we verified that ...

journal_title：Vision research

authors： Purpura G,Febbrini Del Magro E,Caputo R,Cioni G,Tinelli F

更新日期：2021-01-01 00:00:00

abstract：:A major factor underlying the prolonged postnatal improvement of visual acuity in primates is an increase in the sampling limit imposed by the photoreceptor mosaic, which may be as much as 5-fold. Further factors operating peripheral to neurons of the lateral geniculate nucleus, which might include changes in neural c...

journal_title：Vision research

authors： Jacobs DS,Blakemore C

更新日期：1988-01-01 00:00:00