The influence of spatial and temporal noise on the detection of first-order and second-order orientation and motion direction.

abstract：:Some results from a survey of 43 patients who had a monofocal intra-ocular-lens (IOL) in one eye and a concentric bifocal intra-ocular-lens in the fellow eye are reported. Twenty patients with 6/9 or better post-operative visual acuity in both eyes, participated in the main part of the study. Optical transfer function...

journal_title：Vision research

authors： Charman WN,Murray IJ,Nacer M,O'Donoghue EP

更新日期：1998-09-01 00:00:00

abstract：:We observed that presenting a low-contrast Gabor patch (2 cpd, 5 degrees eccentricity, contrast=4%) for 8 s and then flashing a 20-30 ms high-contrast patch over it could elicit the perceptual disappearance of a subsequent low-contrast stimulus, whereas neither low-contrast adaptation nor high-contrast flash alone had...

journal_title：Vision research

authors： Moradi F,Shimojo S

更新日期：2004-03-01 00:00:00

abstract：:Sensory, cognitive and motor processing can result in changes of the ongoing EEG in form of an event-related desynchronization (ERD) or event-related synchronization (ERS). Both phenomena are time-locked but not phase-locked to the event and they are highly frequency-band specific. The ERD is interpreted as a correlat...

journal_title：Vision research

authors： Pfurtscheller G

更新日期：2001-01-01 00:00:00

abstract：:Pupil responses to light are greatly influenced by initial pupil size. Small pupils, operating under photopic conditions, show tonic responses to step increases of light and high gains; thus the pupil is a good regulator of light. Large pupils, operating under mesopic or scotopic conditions show phasic responses, "pup...

journal_title：Vision research

authors： Sun F,Stark L

更新日期：1983-01-01 00:00:00

abstract：:Edge detection is widely believed to be an important early stage in human visual processing. However, there have been relatively few attempts to map human edge detection filters. In this study, observers had to locate a randomly placed step edge in brown noise (the integral of white noise) with a 1/f2 power spectrum. ...

journal_title：Vision research

authors： McIlhagga W

更新日期：2018-12-01 00:00:00

abstract：:The critical durations for temporal integration at threshold were obtained for lights of various wavelengths, presented both against darkness and against achromatic or chromatic backgrounds of different luminances. The critical duration (tc) was defined by a point of intersection of the two lines with the slopes of ze...

journal_title：Vision research

authors： Mitsuboshi M,Kawabata Y,Aiba TS

更新日期：1987-01-01 00:00:00

abstract：:Seven models of human visual recognition from cognitive psychology, visual psychophysics and connectionism were compared. They were used to predict psychophysical classification data obtained via supervised learning with parametrised grey-level patterns (compound Gabor signals). Four sets of learning patterns, as well...

journal_title：Vision research

authors： Unzicker A,Jüttner M,Rentschler I

更新日期：1998-08-01 00:00:00

abstract：:In research on eye-movement control during reading, the importance of cognitive processes related to language comprehension relative to visuomotor aspects of saccade generation is the topic of an ongoing debate. Here we investigate various eye-movement measures during reading of randomly shuffled meaningless text as c...

journal_title：Vision research

authors： Schad DJ,Nuthmann A,Engbert R

更新日期：2010-11-23 00:00:00

abstract：:If the spatial-frequency of sinusoidal signals in a contrast-detection experiment varies randomly from trial to trial, then performance is decreased compared with that in a situation where it remains constant. This spatial-frequency uncertainty effect can more or less be compensated by presenting informative cues shor...

journal_title：Vision research

authors： Hübner R

更新日期：1996-11-01 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

authors： Zurek DB,Nelson XJ

更新日期：2012-08-01 00:00:00

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

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

更新日期：2006-09-01 00:00:00

abstract：:This study investigated the influence of five days of moderate intensity aerobic exercise on the acquisition and consolidation of visual perceptual learning using a motion direction discrimination (MDD) task. The timing of exercise relative to learning was manipulated by administering exercise either before or after p...

journal_title：Vision research

authors： Connell CJW,Thompson B,Green H,Sullivan RK,Gant N

更新日期：2018-11-01 00:00:00

abstract：:Prior studies indicate that postural stability under binocular viewing is not better than under monocular viewing. This was tested at the distances of 145 cm [Fox, C.R. (1990). Some visual influences on human postural equilibrium: binocular versus monocular fixation. Perception and Psychophysics, 47 (5), 409-422] and ...

journal_title：Vision research

authors： Lê TT,Kapoula Z

更新日期：2006-10-01 00:00:00

abstract：:The ability to judge the separation between two target lines deteriorates as the base separation increases. Several lines of evidence suggest that this may be due to larger base separations being processed by mechanisms that cover larger areas and which have a greater associated positional uncertainty as a consequence...

journal_title：Vision research

authors： Badcock DR,Sullivan K

更新日期：1994-05-01 00:00:00

abstract：:Westwood and Goodale (this issue) review the evidence for distinct visual streams for action and perception. They argue that, on balance, both the neuropsychological and psychophysical data support this distinction. They claim that critical results were either statistically inconclusive (because they consisted of nega...

journal_title：Vision research

authors： Schenk T,Franz V,Bruno N

更新日期：2011-04-22 00:00:00

abstract：UNLABELLED:Taurine transporter knockout mice show severe retinal degeneration at an early age. The study was designed to determine whether degeneration also takes place in the absence of light. Mice were maintained up to 6 weeks of age in cyclic lighting or in total darkness. Degeneration took place in both groups, but...

journal_title：Vision research

authors： Rascher K,Servos G,Berthold G,Hartwig HG,Warskulat U,Heller-Stilb B,Häussinger D

更新日期：2004-01-01 00:00:00

abstract：:A generally accepted notion in binocular vision is that we see the world as if viewed by a single eye, the cyclopean eye. A consequence of seeing the world from a single point in space is that the outlines of occluding and occluded surfaces have the same shape. We designed stereograms in which subjects aligned binocul...

journal_title：Vision research

authors： Erkelens CJ,Muijs AJ,van Ee R

更新日期：1996-07-01 00:00:00

abstract：:Using displacing prisms to dissociate the influence of optic flow and egocentric direction, previous research (Current Biology 8 (1998) 1191) showed that people primarily use egocentric direction to control their locomotion on foot, rather than optic flow. When wearing displacing prisms, participants followed the curv...

journal_title：Vision research

authors： Harris JM,Bonas W

更新日期：2002-06-01 00:00:00

abstract：:A retinal-binding protein (RALBP) was isolated from the squid retina, and purified by anion-exchange and size-exclusion chromatography. The molecular weight was determined to be 51,000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and by gel filtration. The purified sample showed absorption maxima at ab...

journal_title：Vision research

authors： Ozaki K,Terakita A,Hara R,Hara T

更新日期：1987-01-01 00:00:00

abstract：:In search for a singleton target, performance is considerably improved when the target and distractors repeat than when they switch roles, an effect called priming of pop-out or PoP (Maljkovic & Nakayama, 1994). Although this phenomenon has been replicated across a variety of dimensions, orientation PoP has proved to ...

journal_title：Vision research

authors： Lamy D,Yashar A,Ruderman L

更新日期：2013-04-05 00:00:00

abstract：:Recombinant adeno-associated virus (rAAV) is widely used in retinal gene therapy. Enhanced rAAV transduction may be important for better therapeutic effects in some retinal gene therapies. In this study, we examined the effects of adenovirus 5 (Ad5) on retina transduction mediated by rAAV2. Our results provide the fir...

journal_title：Vision research

authors： Wu J,Zhang S,Wu X,Dong X,Xu P,Liu X,Li C,Huang Q

更新日期：2008-07-01 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

authors： Coppe S,de Xivry JJ,Missal M,Lefèvre P

更新日期：2010-12-01 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：:The eyes are always moving even during fixation, making the retinal image move concomitantly. While these motions activate early visual stages, they are excluded from one's perception. A striking illusion reported here renders them visible: a static pattern surrounded by a synchronously flickering pattern appears to m...

journal_title：Vision research

authors： Murakami I

更新日期：2003-04-01 00:00:00

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

authors： Blake R,Holopigian K

更新日期：1985-01-01 00:00:00

abstract：BACKGROUND:According to the Helmholtz theory of accommodation the loss of accommodation amplitude is caused by the growing sclerosis of the crystalline lens, whereas the ciliary muscle and the lens capsule are mainly uneffected by age. A permanent treatment method for presbyopia which offers a dynamic accommodation abi...

journal_title：Vision research

authors： Schumacher S,Oberheide U,Fromm M,Ripken T,Ertmer W,Gerten G,Wegener A,Lubatschowski H

更新日期：2009-07-01 00:00:00

abstract：:The kinetics of synaptic transfer from photoreceptors to second order neurons have been determined in the retina of the snapping turtle. Analysis of the fluctuations resulting from the random release of cone transmitter molecules reveals that the action on postsynaptic channels of the depolarizing bipolar cells is pro...

journal_title：Vision research

authors： Copenhagen DR,Ashmore JF,Schnapf JK

更新日期：1983-01-01 00:00:00

abstract：:(1) We studied the influence of photoperiod and unilateral lid suture on post-natal ocular growth in two types of White Leghorn chicks previously reported to respond differently to visual deprivation, Truslow and Cornell K chicks. We analyzed the chicks after 2 weeks of rearing, a time period commonly used in neuropha...

journal_title：Vision research

authors： Stone RA,Lin T,Desai D,Capehart C

更新日期：1995-05-01 00:00:00

abstract：:According to the Oppel-Kundt illusion, a filled space appears larger than an empty one. In the present research we studied how textural characteristics affect the perceived size of two-dimensional patterns. We investigated the perceived extension of square textures by manipulating spatial frequency and filling microel...

journal_title：Vision research

authors： Giora E,Gori S

更新日期：2010-11-23 00:00:00

abstract：:In this study, we show that glutamate regulates the viability of cultured retinal cells upon transient glucose deprivation. At low concentrations (10-100 microM) glutamate decreased MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] reduction to about 50% of control and decreased intracellular ATP leve...

journal_title：Vision research

authors： Rego AC,Santos MS,Areias F,Proença T,Oliveira CR

更新日期：2001-03-01 00:00:00