Spatial cone activity distribution in diseases of the posterior pole determined by multifocal electroretinography.

abstract：:The visual evoked potential (VEP) in the mouse is characterized and compared to responses obtained with the electroretinogram (ERG). The results indicate that: 1, the VEP originates in the visual cortex; 2, the rod and cone pathways contribute separately to the VEP; 3, temporal tuning functions for rod and cone ERGs a...

journal_title：Vision research

authors： Ridder WH 3rd,Nusinowitz S

更新日期：2006-03-01 00:00:00

abstract：:There is controversy regarding whether or not involuntary attention improves response accuracy at a cued location when the cue is non-predictive and if these cueing effects are dependent on backward masking. Various perceptual and decisional mechanisms of performance enhancement have been proposed, such as signal enha...

journal_title：Vision research

authors： Pack W,Carney T,Klein SA

更新日期：2013-08-30 00:00:00

abstract：:Temporal processing limits were determined for two types of stereoscopic percept associated with square wave disparity alternation: apparent depth motion and depth pulsation. The stimuli were dynamic random dot stereograms containing no monocular cues for either target motion or disparity change. The percept of a sing...

journal_title：Vision research

authors： Norcia AM,Tyler CW

更新日期：1984-01-01 00:00:00

abstract：:In masked priming, a briefly presented prime can facilitate or inhibit responses to a subsequent target. In most instances, targets with an associated response that is congruent with the prime direction speed up reaction times to the target (a positive compatibility effect; PCE). However, under certain circumstances, ...

journal_title：Vision research

authors： Misirlisoy E,Hermens F,Stavrou M,Pennells J,Walker R

更新日期：2014-03-01 00:00:00

abstract：:Differential spatial displacement discrimination thresholds were determined for a configuration of three identical Gaussian modulated patches of sinusoidal grating presented with equal orientation and at threshold luminance contrast. The patches were arranged one above the other at equal spatial intervals. The orienta...

journal_title：Vision research

authors： Toet A,Koenderink JJ

更新日期：1988-01-01 00:00:00

abstract：:Normal binocular vision emerges from the combination of neural signals arising within separate monocular pathways. It is natural to wonder whether both eyes contribute equally to the unified cyclopean impression we ordinarily experience. Binocular rivalry, which occurs when the inputs to the two eyes are markedly diff...

journal_title：Vision research

authors： Dieter KC,Sy JL,Blake R

更新日期：2017-12-01 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 had the rare opportunity to examine a patient with a unilateral complete ophthalmoplegia in an eye with normal visual acuity. We recorded the movements of the covered, sound eye of the patient during full-field optokinetic stimulation of his seeing, immobile eye (open loop condition). The open loop gain for low vel...

journal_title：Vision research

authors： Leigh RJ,Newman SA,Zee DS,Miller NR

更新日期：1982-01-01 00:00:00

abstract：:We measured thresholds for detecting the direction of curvature in slightly bent stimuli such as arcs and sinusoidal lines, and the direction of bend in chevrons and trapezoids in an initial experiment. Stimulus length varied over a wide range from 8.3 to 267 min arc. For sufficiently long stimuli, the angle between t...

journal_title：Vision research

authors： Kramer D,Fahle M

更新日期：1996-05-01 00:00:00

abstract：:The visual pigments in the rods do not have a special absorption that gives them maximal sensitivity. The visual pigments of "deep sea" fish are an exception for these do match the environmental light to give maximum sensitivity. At the low light intensities at which the rods operate, it is the number of photons that ...

journal_title：Vision research

authors： Lythgoe JN

更新日期：1984-01-01 00:00:00

abstract：:We evaluated the level of intraocular light scatter in a group of patients with retinitis pigmentosa (RP) who had minimal or no lens opacities, since such patients not infrequently complain of photoaversion. Intraocular light scatter was measured in 20 patients with RP who were < 60 years of age and who had no more th...

journal_title：Vision research

authors： Alexander KR,Fishman GA,Derlacki DJ

更新日期：1996-11-01 00:00:00

abstract：:Contours are believed to play a key role in the visual analysis of scenes by the primate brain. In dynamic scenes, the presence of contours is often signaled by discontinuities in motion fields. However, it is unclear whether the motion fields over which the visual system extracts discontinuities, correspond to the lo...

journal_title：Vision research

authors： Sinha P

更新日期：2001-03-01 00:00:00

abstract：:Word length is one of the main determinants of eye movements during reading and has been shown to influence slow readers more strongly than typical readers. The influence of word length on reading in individuals with different reading skill levels has been shown in separate eye-tracking and electroencephalography stud...

journal_title：Vision research

authors： Loberg O,Hautala J,Hämäläinen JA,Leppänen PHT

更新日期：2019-12-01 00:00:00

abstract：:Exogenous covert attention is an automatic, transient form of attention that can be triggered by sudden changes in the periphery. Here we test for the effects of attention on color perception. We used the methodology developed by Carrasco, Ling, and Read [Carrasco, M., Ling, S., & Read, S. (2004). Attention alters app...

journal_title：Vision research

authors： Fuller S,Carrasco M

更新日期：2006-11-01 00:00:00

abstract：:The foveal region of the retina has a yellow pigmentation composed primarily of the carotenoids lutein and zeaxanthin. Past studies have shown that cigarette smoking depresses carotenoid concentrations in the blood. This is the first report on the effects of cigarette smoking on carotenoids in the retina. Macular pigm...

journal_title：Vision research

authors： Hammond BR Jr,Wooten BR,Snodderly DM

更新日期：1996-09-01 00:00:00

abstract：:Spatiotopic cues, such as perceived distance, have little effect on accommodation unless blur has been reduced or eliminated. We investigated the effect of perceived distance on accommodation under binocular steady-state conditions, about which little is known. Blur was reduced but not eliminated by using a stimulus w...

journal_title：Vision research

authors： Kotulak JC,Morse SE

更新日期：1995-03-01 00:00:00

abstract：:The characteristics of the neural generator producing an evoked potential in response to the brief presentation of a vernier offset was investigated in three experiments. In the first study, averaged evoked potentials (EPs) recorded in response to a single vernier offset stimulus consisting of a horizontal line which ...

journal_title：Vision research

authors： Zak R,Berkley MA

更新日期：1986-01-01 00:00:00

abstract：:This study investigated whether low-level attentional processes as indicated by saccade trajectories are modulated by higher-order factors as indicated by participants' cultural background. We hypothesized that if the East Asian participants engage in context-dependent attentional processing to a greater extent than t...

journal_title：Vision research

authors： Petrova K,Wentura D,Fu X

更新日期：2013-05-24 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

authors： Yang JH,Wu SM

更新日期：1997-04-01 00:00:00

abstract：:There is a marked anisotropy in the perception of stereoscopic tilt: vertical gradients of horizontal disparity are more easily perceived than horizontal gradients. This could be explained if orientation disparity (the orientation difference in the two eyes' views of the same line) were one of the cues used to determi...

journal_title：Vision research

authors： Mitchison GJ,McKee SP

更新日期：1990-01-01 00:00:00

abstract：:We report here measurements of visual evoked potential (VEP) activity after induction of afterimages in human observers. Drifting gratings normally produce no measurable phase synchronized VEP. However, after an afterimage of a high contrast grating of the same orientation and spatial frequency of that of the drifting...

journal_title：Vision research

authors： Burr DC,Fiorentini A,Morrone MC

更新日期：1987-01-01 00:00:00

abstract：:Monocular acuity, binocular acuity, and stereopsis were assessed with preferential-looking techniques in a sample of 114 normal infants aged 0-11 months in order to examine developmental trends in: (1) interocular differences in acuity, (2) test-retest reliability, (3) the relationship between monocular and binocular ...

journal_title：Vision research

authors： Birch EE

更新日期：1985-01-01 00:00:00

abstract：:A change in the basic-level class when viewing a sequence of two objects produces a large release from adaptation in LOC compared to when the images are identical. Is this due to a change in semantics or shape? In an fMRI-adaptation experiment, subjects viewed a sequence of two objects and judged whether the stimuli w...

journal_title：Vision research

authors： Kim JG,Biederman I,Lescroart MD,Hayworth KJ

更新日期：2009-09-01 00:00:00

abstract：:Reading in peripheral vision is slow and requires large print, posing substantial difficulty for patients with central scotomata. The purpose of this study was to evaluate the effect of print size on reading speed at different eccentricities in normal peripheral vision. We hypothesized that reading speeds should remai...

journal_title：Vision research

authors： Chung ST,Mansfield JS,Legge GE

更新日期：1998-10-01 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

authors： Averbuch-Heller L,Lewis RF,Zee DS

更新日期：1999-01-01 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

authors： Hess RF,Ledgeway T,Dakin S

更新日期：2000-01-01 00:00:00

abstract：:Three normal observers made visual matches from 0.03 to 100 td on a 10 degree central field at 445, 560 and 630 nm, using two different methods: heterochromatic flicker photometry and direct comparison brightness matching. In a relative sensitivity vs illuminance plot, the brightness matches underwent smooth changes, ...

journal_title：Vision research

authors： Vienot F,Chiron A

更新日期：1992-03-01 00:00:00

abstract：:In this work, optical retardation (OR) was investigated in corneal stroma collagen fibers from nonobese diabetic (NOD) and healthy (BALB/c) mice. Linear dichroism (LD) was investigated in corneas stained with Ponceau SS and Toluidine Blue, using microspectrophotometer. NOD corneas showed higher OR values than the cont...

journal_title：Vision research

authors： Aldrovani M,Guaraldo AM,Vidal BC

更新日期：2007-12-01 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：:An adaptive mechanism controls the strength of innervation to the two eyes independently. However, under some circumstances an adjustment in strength of innervation to one eye is generalized to the other. The coupling and uncoupling of the two eyes during saccadic motor learning was studied using the technique of intr...

journal_title：Vision research

authors： Albano JE,Marrero JA

更新日期：1995-12-01 00:00:00