Abstract:
:The longitudinal chromatic aberration (LCA) of the human eye was determined between wavelengths 458 and 633 nm for ten observers by incorporating Argon and Helium-Neon Lasers into a Badal optometer system such that tonic (or "dark focus") resting positions of accommodation could be measured under darkroom conditions. A mean chromatic range of 1.87 D was found between 488 and 633 nm. The range increased slightly to 1.91 D when the experiment was repeated under cycloplegia on a subset of three subjects. Additional wavelengths (458 and 476 nm) for a further subset (four subjects) increased the range to 2.65 D. This magnitude of LCA would support recent predictions based on Abbe and Pulfrich refractometry analyses of the dispersion of the human crystalline lens and ocular media.
journal_name
Vision Resjournal_title
Vision researchauthors
Gilmartin B,Hogan REdoi
10.1016/0042-6989(85)90148-8subject
Has Abstractpub_date
1985-01-01 00:00:00pages
1747-53issue
11eissn
0042-6989issn
1878-5646pii
0042-6989(85)90148-8journal_volume
25pub_type
杂志文章相关文献
VISION RESEARCH文献大全abstract::Foreknowledge about the demands of an upcoming trial may be exploited to optimize behavioural responses. In the current study we systematically investigated the benefits of partial foreknowledge--that is, when some but not all aspects of a future trial are known in advance. For this we used an ocular motor paradigm wi...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2010.11.006
更新日期:2011-01-01 00:00:00
abstract::It is possible to discriminate between grating contrasts over a 300-fold contrast range, whereas V1 neurons have very limited dynamic ranges. Using populations of model neurons with contrast-response parameters taken from electrophysiological studies (cat and macaque), we investigated ways of combining responses to co...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(03)00277-3
更新日期:2003-08-01 00:00:00
abstract::The influence of binocular disparate targets on the perceived visual direction of adjacent monocular targets has been termed "binocular capture". The magnitude of capture increases significantly with increasing vertical separation between monocular targets. This study sets out to elucidate the interaction between spat...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2011.09.011
更新日期:2011-12-08 00:00:00
abstract::A pincushion formed by four arcs on a gray background looks darker when the arcs are black, and lighter when the arcs are white. Yet, a matching-experiment shows that this difference is relative. Whereas the apparently darker pincushion requires a matching luminance that is lower than the background luminance (i.e. as...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(95)98721-k
更新日期:1995-05-01 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
pub_type: 杂志文章
doi:10.1016/0042-6989(96)89252-2
更新日期:1996-02-01 00:00:00
abstract::There is an ongoing debate on whether binocular rivalry involves competition among monocular cells or binocular cells. We investigated this issue psychophysically with two specially designed test stimuli. One test stimulus contained monocular motion signals but greatly reduced binocular motion signals, while the other...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2003.08.007
更新日期:2004-01-01 00:00:00
abstract::Perception of visual motion includes a first-order mechanism sensitive to luminance changes and a second-order motion mechanism sensitive to contrast changes. We studied neural substrates for these motion types in 142 subjects with visual cortex lesions, 68 normal controls and 28 brain lesion controls. On first-order ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2008.03.005
更新日期:2008-11-01 00:00:00
abstract::The inheritance of Rayleigh match midpoints and photometric matches (551-667 nm) was studied in observers with normal color vision. An analysis was performed to evaluate whether the measured interobserver variations in these two traits were consistent with single gene allelic variation, polygenic variation, or environ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(90)90134-7
更新日期:1990-01-01 00:00:00
abstract::Retinal motion can modulate visual sensitivity. For instance, low contrast drifting waveforms (targets) can be easier to detect when abutting the leading edges of movement in adjacent high contrast waveforms (inducers), rather than the trailing edges. This target-inducer interaction is contingent on the adjacent wavef...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2014.03.003
更新日期:2014-05-01 00:00:00
abstract::The ability to rapidly and accurately recognize visual stimuli represents a significant computational challenge. Yet, despite such complexity, the primate brain manages this task effortlessly. How it does so remains largely a mystery. The study of visual perception and object recognition was once limited to investigat...
journal_title:Vision research
pub_type: 杂志文章,评审
doi:10.1016/j.visres.2010.10.002
更新日期:2011-04-13 00:00:00
abstract::Marine mammals have lost the ability to express S-cone opsin, and possess only one type of M/L-cone in addition to numerous rods. As they are cone monochromats they should be color blind. However, early behavioral experiments with fur seals and sea lions indicated discrimination ability between many shades of grey and...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2016.04.009
更新日期:2016-08-01 00:00:00
abstract::Colorimetric purity, measured as the first step from white toward the spectrum has a V-shaped function. Purity discrimination is best near 400 nm, least at 570 nm and intermediate at mid-spectrum and long wavelengths. A much flatter function occurs when colorimetric purity is measured as the first step from the spectr...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(93)90175-v
更新日期:1993-09-01 00:00:00
abstract::To examine how local velocities from different regions of the visual field combine to form a coherent motion percept, we subjected a sinusoidal line stimulus to translational motion. Horizontal movement of a sinewave line along its axial direction is perceived as nonrigid if the angle at the zero crossing is smaller t...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(88)90052-1
更新日期:1988-01-01 00:00:00
abstract::Wilson and Humanski (1993) have recently reported evidence that adapting to low temporal frequency sinewave gratings yields little threshold elevation for briefly presented test stimuli. We postulated that brief stimuli may be detected by a transient channel which would be minimally affected by a low temporal frequenc...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(94)00283-r
更新日期:1995-06-01 00:00:00
abstract::Photoreception in echinoderms has been studied for several years with a focus on the dermal photoreceptors of echinoids. Even though spatial vision has been proposed for this dermal photosystem, by far the most advanced system is found in a number of asteroids where an unpaired tube foot at the tip of each arm carries...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2016.05.007
更新日期:2016-10-01 00:00:00
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
doi:10.1016/j.visres.2006.02.010
更新日期:2006-08-01 00:00:00
abstract::Neurons in the vertebrate retina are interconnected by a complex network of chemical and electrical synapses which make it difficult to study the intrinsic biochemical and biophysical properties of individual cells. During the past decade, enzymatic methods have been developed for dissociating adult retinas into viabl...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(83)90090-1
更新日期:1983-01-01 00:00:00
abstract::We compared the mechanisms responsible for orientation discrimination of stimuli defined by luminance and red/green isoluminant contrast. A four-alternative forced-choice (4-AFC) paradigm was used to determine thresholds for discriminating 1 cpd sinewave gratings differing in orientation, contrast, or both. When measu...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(97)00240-x
更新日期:1998-04-01 00:00:00
abstract::We examine how various sources of information contribute to the percept of motion in depth. Subjects were presented with targets moving in depth, and were asked to judge their velocities and final positions. On each presentation, the target's position relative to the two eyes (target vergence), the size of the target'...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(95)00146-8
更新日期:1996-03-01 00:00:00
abstract::Lenses from 27 human eyes ranging in age from 10 to 87 years were used to determine how accommodation and age affect the optical properties of the lens. A scanning laser technique was used to measure focal length and spherical aberration of the lenses, while the lenses were subjected to stretching forces applied throu...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(97)00102-8
更新日期:1998-01-01 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
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0042-6989(96)00323-9
更新日期:1997-07-01 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::Adaptation is a fundamental property of perceptual processing. In low-level vision, it can calibrate perception to current inputs, increasing coding efficiency and enhancing discrimination around the adapted level. Adaptation also occurs in high-level vision, as illustrated by face aftereffects. However, the functiona...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2010.03.003
更新日期:2010-05-12 00:00:00
abstract::Contrast sensitivity for both vertically and obliquely oriented gratings increased with increases in stimulus area to an asymptotic value. Sensitivity grew more slowly for oblique gratings and reached an asymptotic value at a larger area than for vertical gratings. For equal areas, oblique gratings always yielded poor...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(83)90060-3
更新日期:1983-01-01 00:00:00
abstract::In previous eye movement research on word length effects, spatial width has been confounded with the number of letters. McDonald (2006) unconfounded these factors by rendering all words in sentences in constant spatial width. In the present study, the Arial font with proportional letter spacing was used for varying th...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2011.05.015
更新日期:2011-08-01 00:00:00
abstract::We investigate the influence of biased feedback on decision and learning processes in a vernier discrimination task. Subjects adjust their decision criteria and hence their responses according to biased external feedback. However, they do not use learning processes to encode incorrectly classified stimuli. As soon as ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(99)00138-8
更新日期:1999-01-01 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::Moving stimuli cause the position of flashed stimuli to appear shifted in the direction of motion (position capture). To examine whether position capture depends on low-level motion interactions or perception of integrated object motion, we employed a slit-view display. Two line-drawn diamonds translated horizontally ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(02)00296-1
更新日期:2002-11-01 00:00:00
abstract::Humans are very sensitive to the presence of other living persons or animals in their surrounding. Human actions can readily be perceived, even in a noisy environment. We recently demonstrated that biological motion, which schematically represents human motion, influences smooth pursuit eye movements during the initia...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2010.08.009
更新日期:2010-12-01 00:00:00
abstract::We investigated the effect of adaptation on orientation discrimination using two experienced observers, then replicated the main effects using a total of 50 naïve subjects. Orientation discrimination around vertical improved after adaptation to either horizontal or vertical gratings, but was impaired by adaptation at ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(00)00248-0
更新日期:2001-01-15 00:00:00