Abstract：
:Weber contrast, DeltaL/L, is a widely used contrast metric for aperiodic stimuli. Zele, Cao & Pokorny [Zele, A. J., Cao, D., & Pokorny, J. (2007). Threshold units: A correct metric for reaction time? Vision Research, 47, 608-611] found that neither Weber contrast nor its transform to detection-threshold units equates human reaction times in response to luminance increments and decrements under selective rod stimulation. Here we show that their rod reaction times are equated when plotted against the spatial luminance ratio between the stimulus and its background (L(max)/L(min), the larger and smaller of background and stimulus luminances). Similarly, reaction times to parafoveal S-cone selective increments and decrements from our previous studies [Murzac, A. (2004). A comparative study of the temporal characteristics of processing of S-cone incremental and decremental signals. PhD thesis, New Bulgarian University, Sofia, Murzac, A., & Vassilev, A. (2004). Reaction time to S-cone increments and decrements. In: 7th European conference on visual perception, Budapest, August 22-26. Perception, 33, 180 (Abstract).], are better described by the spatial luminance ratio than by Weber contrast. We assume that the type of stimulus detection by temporal (successive) luminance discrimination, by spatial (simultaneous) luminance discrimination or by both [Sperling, G., & Sondhi, M. M. (1968). Model for visual luminance discrimination and flicker detection. Journal of the Optical Society of America, 58, 1133-1145.] determines the appropriateness of one or other contrast metric for reaction time.
journal_name
Vision Resjournal_title
Vision researchauthors
Vassilev A,Murzac A,Zlatkova MB,Anderson RSdoi
10.1016/j.visres.2008.12.010subject
Has Abstractpub_date
2009-03-01 00:00:00pages
524-9issue
5eissn
0042-6989issn
1878-5646pii
S0042-6989(08)00606-8journal_volume
49pub_type
杂志文章,随机对照试验相关文献
VISION RESEARCH文献大全abstract：:Discrimination between a figure and its surround is an important first step of pattern recognition. This discrimination usually relies, as a first step, on the detection of borders between a figure and its surround, for example based on spatial gradients in luminance, colour, or texture. There is evidence that neurone...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(02)00265-1
更新日期：2003-01-01 00:00:00
abstract：:Absorption of photons by pigments in photoreceptor cells results in photoisomerization of the chromophore, 11-cis-retinal, to all-trans-retinal and activation of opsin. Photolysed chromophore is converted back to the 11-cis-configuration via several enzymatic steps in photoreceptor and retinal pigment epithelial cells...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00198-3
更新日期：1998-05-01 00:00:00
abstract：:We compared ocular and eye-head tracking responses to an illusion of diagonal motion produced when vertical movement of a small visual target was synchronized to horizontal movement of a background display. In response to sinusoidal movement, smooth ocular pursuit followed vertical target motion, with only a small hor...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(95)00067-a
更新日期：1995-11-01 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
pub_type： 杂志文章
doi：10.1016/0042-6989(90)90093-z
更新日期：1990-01-01 00:00:00
abstract：:Recent evidence points to the importance of global operations across spatial regions larger than individual cortical receptive fields. Studies of contour integration and motion trajectory detection suggest that network operations between local detectors underlie the encoding of extended contours in space and extended ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(00)00183-8
更新日期：2000-01-01 00:00:00
abstract：:This paper customizes Bennett's equation for calculating lens power in chicken eyes from refraction, keratometry and biometry. Previously published data on refraction, corneal power, anterior chamber depth, lens thickness, lens radii of curvature, axial length and eye power in chickens aged 10-90 days were used to est...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2014.01.003
更新日期：2014-03-01 00:00:00
abstract：:In preview search when an observer ignores an early appearing set of distractors, there can subsequently be impeded detection of new targets that share the colour of this preview. This "negative carry-over effect" has been attributed to an active inhibitory process targeted against the old items and inadvertently thei...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2014.02.007
更新日期：2014-04-01 00:00:00
abstract：:Electrophysiological studies have established that lead exposure produces selective rod deficits. The present electroretinographic (ERG) and correlated calcium experiments examined whether low-level or moderate-level developmental lead exposure (peak blood lead of 19 and 59 micrograms/dl, respectively) altered dark ad...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(92)90134-5
更新日期：1992-02-01 00:00:00
abstract：:Glutamate transporters in the tiger salamander retina were studied by autoradiographic and intracellular recording techniques. When the retina was incubated with 15 microM L-[3H]glutamate, photoreceptors and Muller cells were labeled, indicating that these cells had high-affinity glutamate uptake transporters. A much ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(96)00231-3
更新日期：1997-04-01 00:00:00
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
doi：10.1016/j.visres.2006.04.003
更新日期：2006-10-01 00:00:00
abstract：:Glass patterns are randomized dot arrays that generate the perception of a global structure. They consist of correlated dot pairs which are generated by geometric transformations. The present study employed behavioral and event-related brain potential (ERP) measures to characterize the underlying neuronal processing w...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.03.015
更新日期：2005-09-01 00:00:00
abstract：:We measured the pupillary light reflex (PLR) in 5 pigmented, Long Evans rats (under urethan sedation) in three conditions: direct stimulation, consensual stimulation, and a control condition designed to measure the effects of stray light. The average constriction (maximal amplitude) produced by a ganzfeld stimulus del...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(89)90078-3
更新日期：1989-01-01 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：:Edge integration refers to a hypothetical process by which the visual system combines information about the local contrast, or luminance ratios, at luminance borders within an image to compute a scale of relative reflectances for the regions between the borders. The results of three achromatic color matching experimen...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2003.12.004
更新日期：2004-05-01 00:00:00
abstract：:The present study showed that at equiluminance the critical duration of temporal integration became shorter as the chromatic saturation of an adaptation field was increased. These results suggest that the chromatic coding system (which is assumed to posses poorer temporal resolution or larger temporal integration time...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(94)90005-1
更新日期：1994-04-01 00:00:00
abstract：:Sand deserts are common biotopes on the earth's surface. Some specialized vertebrate species have colonized these ecological habitats by living buried in the sand. Among these so called psammophilic species are the Scincidae sand dune living species Scincus scincus and Eumeces schneideri. These two skinks share a rela...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2020.04.004
更新日期：2020-04-28 00:00:00
abstract：:Horizontal pursuit eye movements were investigated in two separate groups of children: One group exhibited developmental co-ordination disorder (n = 8) whilst another group of children were born prematurely (n = 8). Both studies found a reduced gain in pursuit eye movements when the respective populations were compare...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(97)00399-4
更新日期：1998-06-01 00:00:00
abstract：:Subretinal injections of human retinal pigment epithelial (RPE) cells early in the course of retinal degeneration in Royal College of Surgeons (RCS) rats can rescue photoreceptors. Fourteen injected animals were studied using a double flash electroretinogram (ERG): 10 were examined longitudinally and four terminally w...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2004.09.014
更新日期：2005-03-01 00:00:00
abstract：:During free viewing visual search, observers often refixate the same locations several times before and after target detection is reported with a button press. We analyzed the rate of microsaccades in the sequence of refixations made during visual search and found two important components. One related to the visual co...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2013.12.001
更新日期：2014-02-01 00:00:00
abstract：:Saccadic eye movements are strongly influenced by shifts of attention to non-target objects. In contrast, we have shown previously that the initiation of smooth pursuit eye movements is relatively unaffected when attention is shifted to objects that are either stationary or move in the same direction as the pursuit ta...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2010.09.017
更新日期：2011-01-01 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：:An individual line or a combination of lines viewed in darkness has a large influence on the elevation to which an observer sets a target so that it is perceived to lie at eye level (VPEL). These influences are systematically related to the orientation of pitched-from-vertical lines on pitched plane(s) and to the leng...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/s0042-6989(01)00150-x
更新日期：2001-10-01 00:00:00
abstract：:Reentrant processing has been proposed as a critical mechanism in visual perception of an object's features. In order to test whether reentry is critical for visual awareness of object presence, the success of reentry was manipulated with object substitution masking (OSM) while participants performed a forced-choice t...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2012.05.001
更新日期：2012-06-15 00:00:00
abstract：:It has been shown that the perceived direction of a plaid with components of unequal contrast is biased towards the direction of the higher-contrast component [Stone, L. S., Watson, A. B., & Mulligan, J. B. (1990). Effect of contrast on the perceived direction of a moving plaid. Vision Research 30, 1049-1067]. It was ...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2006.10.017
更新日期：2007-02-01 00:00:00
abstract：:Holistic processing, the decoding of the global structure of a stimulus while the local parts are not explicitly represented, is a basic characteristic of object perception. The current study was aimed to test whether such a representation could be created even for objects that violate fundamental principles of spatia...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2013.10.001
更新日期：2013-12-18 00:00:00
abstract：:Distant visual acuity was determined for several viewing angles in two restrained White Carneaux pigeons. The behavioral technique was a classical conditioning procedure that paired presentation of sinusoidal gratings with shock. A conditioned heart rate acceleration during the grating presentation indicated resolutio...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(82)90188-2
更新日期：1982-01-01 00:00:00
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
doi：10.1016/0042-6989(91)90106-f
更新日期：1991-01-01 00:00:00
abstract：:Past physiological and psychophysical experiments have shown that attention can modulate the effects of contextual information appearing outside the classical receptive field of a cortical neuron. Specifically, it has been suggested that attention, operating via cortical feedback connections, gates the effects of long...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2008.12.017
更新日期：2009-03-01 00:00:00
abstract：:Age related changes in the dynamics of accommodation (far to near focus) and disaccommodation (near to far focus) are reported in this study. Dynamic responses to step stimulus demands from 1D to 6D, in 1D steps, were recorded with a PowerRefractor in 66 subjects in the age range 14-45 years. The accommodative and dis...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/j.visres.2005.11.012
更新日期：2006-04-01 00:00:00
abstract：:Peripheral vision serves to direct our attention and fixation to objects of interest. This requires that the visual system be capable of accurately localizing peripherally presented targets having different spatial structures. The question we address is "to what extent does stimulus spatial structure influence the pre...
journal_title：Vision research
pub_type： 杂志文章
doi：10.1016/0042-6989(95)00343-6
更新日期：1996-12-01 00:00:00
