Abstract：
:Motion detection can be achieved either with mechanisms sensitive to a target's velocity, or sensitive to change in a target's position. Using a procedure to dissociate these two provided by Nakayama and Tyler (Vis Res 1981;21:427-433), we explored detection of first-order (luminance-based) and various second-order (texture-based and stereo-based) motion. In the first experiment, observers viewed annular gratings oscillating in rotational motion at various rates. For each oscillation temporal frequency, we determined the minimum displacement of the pattern for which observers could reliably see motion. For first-order motion, these motion detection thresholds decreased with increasing temporal frequency, and thus were determined by a minimum velocity. In contrast, motion detection thresholds for second-order motion remained roughly constant across temporal frequency, and thus were determined by a minimum displacement. In Experiment 2, luminance-based gratings of different contrasts were tested to show that the velocity-dependence was not an artifact of pattern visibility. In the remaining experiments, results similar to Experiment 1 were obtained with a central presentation of a linear grating, instead of an annular grating (Experiment 3), and with a motion discrimination (phase discrimination) rather than motion detection task (Experiment 4). We conclude that, within the ranges tested here, second-order motion is more readily detected with a mechanism which tracks the change of position of features over time.
journal_name
Vision Resjournal_title
Vision researchauthors
Seiffert AE,Cavanagh Pdoi
10.1016/s0042-6989(98)00035-2subject
Has Abstractpub_date
1998-11-01 00:00:00pages
3569-82issue
22eissn
0042-6989issn
1878-5646pii
S0042-6989(98)00035-2journal_volume
38pub_type
杂志文章相关文献
VISION RESEARCH文献大全abstract：:We measured perceived motion smear when retinal image motion was created either by a physically moving object or by movement of the eyes or head. Consistent with previous reports, the extent of perceived motion smear during an eye or head movement is less than that produced by physical object motion when the eyes are ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2004.12.004
更新日期：2005-06-01 00:00:00
abstract：:Stimulus threshold and response latencies were measured for electrically elicited retinal ganglion cell responses in retina isolated from the eyes of normal and retinal degenerate (rd1) mice. Stimulation of the ganglion cell-side in normal retina yielded a significantly lower mean threshold and shorter latency when co...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.03.031
更新日期：2006-10-01 00:00:00
abstract：:Excitation mapping is a method of visualizing the signaling history of neurons with permeant organic cations. It is compatible with high-resolution imaging, allowing concurrent visualization of all neuronal classes and their glutamate-gated excitation histories. Excitation mapping documents the stability and precision...
journal_title：Vision research
pub_type： 杂志文章,评审
doi：10.1016/j.visres.2005.07.025
更新日期：2005-12-01 00:00:00
abstract：:In most visual search experiments in the laboratory, objects are presented on an isolated, blank background. In most real world search tasks, however, the background is continuous and can be complex. In six experiments, we examine the ability of the visual system to separate search items from a background. The results...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(02)00388-7
更新日期：2002-12-01 00:00:00
abstract：:In the retina of Siberian sturgeon, three spectral classes of photoreceptors were identified by microspectrophotometry. These were rods, oil drop-containing and oil drop-free cones possessing P549, and oil drop-containing cones possessing P613 and P465. With intracellular recordings, rod-driven, cone-driven, and mixed...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(91)90162-x
更新日期：1991-01-01 00:00:00
abstract：:Using new geometric information on the shape of the lens that has recently become available, a finite element model has been developed in order to estimate the forces that act on the lens during accommodation for a typical 29-year-old human eye. To investigate the influence of the anterior, posterior and central zonul...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.04.012
更新日期：2006-10-01 00:00:00
abstract：:Whereas the influence on the elevation of visually perceived eye level (VPEL) by two bilaterally symmetric, long (64 degrees-long), pitched-from-vertical lines in total darkness is only a little more than the average of the VPELs of the two lines measured separately [Matin & Li (1999). Vision Research, 39, 307-329], i...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(99)00182-0
更新日期：2000-01-01 00:00:00
abstract：:Light and darkness promote opposite migrations of screening pigment granules in the retinal photoreceptors of the crayfish and other arthropods, and microtubules have been implicated in this part of the adaptation process. This report considers the topographic relationships of the migratory pigment granules with the m...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(82)90217-6
更新日期：1982-01-01 00:00:00
abstract：:Interocular transfer of the motion aftereffect (MAE) has been extensively investigated for the purpose of analysing the binocularity of the underlying motion mechanism. Previous studies unanimously reported that the transfer of the classical static MAE is partial, but there is a controversy as to whether the transfer ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(99)00176-5
更新日期：2000-01-01 00:00:00
abstract：:We studied the effects of prism-induced disparity on static and intrasaccadic alignment in six normal human subjects. A ten diopter base-out prism, calling for convergence, was placed in front of the central field of the right eye, so that at the center the eye viewed through the prism; at left and right, outside the ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(98)00156-4
更新日期：1999-01-01 00:00:00
abstract：:To gain new insight into the effects of monocular deprivation, we studied the visual cortex of adult cats deprived of vision in one eye. Local field potentials were recorded in response to contrast reversal of square-wave gratings modulated in time either by pseudorandom, m-sequences or periodically. We have found tha...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00158-2
更新日期：1998-01-01 00:00:00
abstract：:We compared the thresholds and response properties of extracellularly recorded retinal ganglion cells (RGCs) in wild-type and rd1 mouse retinas to electrical stimulation of the retinal neural network. Retinas were stimulated in vitro with biphasic current pulses (1 ms/phase) applied with a 400-microm diameter, subreti...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.04.016
更新日期：2008-06-01 00:00:00
abstract：:Smooth pursuit eye movements superimpose additional motion on the retinal image of untracked visual targets, potentially leading to the perception of motion smear and a distortion of the perceived direction of motion. Previously, we demonstrated an attenuation of perceived motion smear when the untracked target moves ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.12.002
更新日期：2007-03-01 00:00:00
abstract：:A smooth surface imaged on the retina produces a smooth flow field. Thus, the visual system may group regions of smoothly varying flow to segment surfaces. We tested this idea by having observers perform a segmentation task on several stimuli that differed in their 3D interpretations but were all matched in the smooth...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(99)00201-1
更新日期：2000-01-01 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
pub_type： 杂志文章
doi：10.1016/0042-6989(89)90060-6
更新日期：1989-01-01 00:00:00
abstract：:Spatiotemporal boundary formation (SBF) refers to perception of continuous contours, shape, and global motion from sequential transformations of widely separated surface elements. How such minimal information in SBF can produce whole forms and the nature of the computational processes involved remain mysterious. Forma...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2015.03.016
更新日期：2016-09-01 00:00:00
abstract：:Jumping spiders (Salticidae) are renowned for their high performing visual system. In addition to their prominent forward-facing telescope-like principal eyes, salticids possess two or three pairs of secondary eyes used for wide-angle motion detection. Salticids orient towards relevant sources of motion detected by th...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2012.06.011
更新日期：2012-08-01 00:00:00
abstract：:A dichoptic display in which the images are cyclorotated in opposite directions does not appear inclined. This suggests that perceived inclination depends on the difference between horizontal-shear and vertical-shear disparity. Large random-dot stereoscopic displays were presented with various types of shear disparity...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(94)90237-2
更新日期：1994-10-01 00:00:00
abstract：:We have tested whether defocus imposed on local retinal areas can produce local changes in eye growth, even if accommodation is available to clear part of the imposed defocus. Hemi-field lenses were attached to little leather hoods that were worn by young chickens from day 11-15 post-hatching. The lens segments defocu...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(96)00224-6
更新日期：1997-03-01 00:00:00
abstract：:We used a tracking method to measure errors in estimating absolute time-to-collision caused by adapting to an expanding target. After adaptation, the estimated time-to-collision was longer than in the baseline condition. This was the case whether estimates were based on binocular information alone or monocular informa...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(99)00065-6
更新日期：1999-10-01 00:00:00
abstract：:Contrast modulation affords independent control of static contrast (C) and changes in contrast (delta C). We found that in anesthetized, paralyzed cats, the visual evoked potential (VEP) was dependent only on magnitude of delta C at each pattern transition, and was independent of the starting or ending contrast level....
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(91)90128-r
更新日期：1991-01-01 00:00:00
abstract：:Perceptual learning is often interpreted as learning of fine stimulus templates. However, we have proposed that perceptual learning is more than template learning, in that more abstract statistical rules may have been learned, so that learning can transfer to stimuli at different precisions. Here we provide new eviden...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2019.01.007
更新日期：2019-03-01 00:00:00
abstract：:As impaired S-cone function has been reported psychophysically this study assessed S-cone function during high altitude exposure using electroretinography (ERG) and investigated a possible association with severity of acute mountain sickness (AMS). This work is related to the Tübingen High Altitude Ophthalmology (THAO...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2014.02.003
更新日期：2014-04-01 00:00:00
abstract：:Contrast detection performance is known to be better for single component sinusoidal gratings than for sums of gratings at different orientations. A recent study Rovamo et al. (1994) (Investigative Ophthalmology and Visual Science, 35, 2611-2619) showed that spatial integration is less effective for multiple orientati...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(96)00233-7
更新日期：1997-04-01 00:00:00
abstract：:To test whether first- and second-order stimuli are processed independently in amblyopic vision, we measured thresholds for identifying a target letter flanked by two letters for all combinations of first- and second-order targets and flankers. We found that (1) the magnitude of crowding is greater for second- than fo...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2007.12.011
更新日期：2008-03-01 00:00:00
abstract：:An intensive nonlinearity in the visual system can produce distortion products, or difference frequency gratings, when observers view two high contrast, high spatial frequency interference fringes of slightly different frequency or orientation added together at the retina. These distortion products are visible even wh...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(92)90144-8
更新日期：1992-02-01 00:00:00
abstract：:The induced size effect is an apparent rotation about a vertical axis that results from binocularly viewing a target in which one half-image is vertically magnified. A previous paper (Arditi et al., 1981, Vision Res. 21, 755-764) described a theory of this effect in terms of horizontal disparities that exist between v...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(82)90124-9
更新日期：1982-01-01 00:00:00
abstract：:Previously Gysen, De Graef, and Verfaillie [Vision Research 42 (2002) 379] showed that, with stimulus displays presenting one stationary and one translating object, sensitivity for intrasaccadic displacements was higher for translating than for stationary objects. In the present paper the importance of the relative en...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(02)00105-0
更新日期：2002-06-01 00:00:00
abstract：:One cannot detect a white disk located at least 15 degrees from fixation in an intersection of gray alleys that define a grid of black squares. A psychophysical examination of the anatomical locus of this "blanking phenomenon" is reported here. Stimuli were presented dichoptically; disk threshold was measured with fix...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2004.08.003
更新日期：2005-01-01 00:00:00
abstract：:We investigated the interactions between flicker thresholds and luminance pedestals using threshold versus contrast (TvC) and method of constant stimuli paradigms. High amplitude luminance pedestals were found to elevate flicker thresholds, but low amplitude luminance pedestals were unable to reduce flicker thresholds...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(00)00121-8
更新日期：2000-01-01 00:00:00
