Abstract:
:Age-related macular degeneration (AMD) is characterized by a central vision loss. Here, we investigated the ability of AMD patients to process the spatial frequency content of scenes in their residual vision, depending of the luminance contrast level. AMD patients and normally-sighted elderly participants (controls) performed a categorization task involving large scenes (outdoors vs. indoors) filtered in low spatial frequencies (LSF), high spatial frequencies (HSF), and non-filtered scenes (NF). Luminance contrast of scenes was equalized between stimuli using a root-mean square (RMS) contrast normalization. In Experiment 1, we applied an RMS contrast of 0.1 (for luminance values between 0 and 1), a value situated between the mean contrast of LSF and HSF scenes in natural conditions. In Experiment 2, we applied an RMS contrast of 0.3, corresponding to the mean contrast of HSF scenes in natural conditions. In Experiment 3, we manipulated four levels of linearly-increasing RMS contrasts (0.05, 0.10, 0.15, and 0.20) for HSF scenes only. Compared to controls, AMD patients gave more non-responses in the categorization of HSF than NF or LSF scenes, irrespective of the contrast level of scenes. Performances improved as contrast increased in HSF scenes. Controls were not differentially affected by the spatial frequency content of scenes. Overall, results suggest that LSF processing is well preserved in AMD patients and allows efficient scene categorization in their parafoveal residual vision. The HSF processing deficit could be partially restored by enhancing luminance contrast.
journal_name
Vision Resjournal_title
Vision researchauthors
Peyrin C,Ramanoël S,Roux-Sibilon A,Chokron S,Hera Rdoi
10.1016/j.visres.2016.11.004subject
Has Abstractpub_date
2017-01-01 00:00:00pages
36-47eissn
0042-6989issn
1878-5646pii
S0042-6989(16)30171-7journal_volume
130pub_type
杂志文章相关文献
VISION RESEARCH文献大全abstract::Blakeslee and McCourt ((1997) Vision Research, 37, 2849-2869) demonstrated that a multiscale array of two-dimensional difference-of-Gaussian (DOG) filters provided a simple but powerful model for explaining a number of seemingly complex features of grating induction (GI), while simultaneously encompassing salient feat...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(99)00119-4
更新日期:1999-10-01 00:00:00
abstract::Subjects observed a random dot pattern that moved horizontally with modulated velocity within an invisible aperture. The velocity contrast, (V2-V1)/V1, was 2/3. Two different percepts occurred while observing this stimulus. At lower modulation frequencies, between 2 and 12 Hz, velocity changes were clearly seen; this ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(96)00037-5
更新日期:1996-09-01 00:00:00
abstract::Muscarinic receptors are identified in bovine retina membranes by the specific binding of 1-[benzilic-4,4'-3H]-quinuclidinyl benzilate [3H]-QNB. Binding occurs to one population of non-cooperative binding sites: KD = 0.11 +/- 0.02 nM and Bmax = 0.61 +/- 0.07 pmol/mg protein. Competition binding curves of the M1-select...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(88)90151-4
更新日期:1988-01-01 00:00:00
abstract::Three experiments examined the effects of using informative verbal and pictorial cues on participants' abilities to perform visual search. By providing participants with more time to encode the cues than had been used previously, all three experiments revealed long-lasting pictorially cued search advantages that stabi...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2012.08.015
更新日期:2012-10-15 00:00:00
abstract::An application of an MOS-type solid-state imaging sensor to a television pupillometer is described. Its advantages over the conventional image-tube pupillometers using silicon vidicons are demonstrated with special emphasis on its excellent dynamics performance. Design considerations for an MOS-type solid-state TV cam...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(82)90200-0
更新日期:1982-01-01 00:00:00
abstract::DL-2-amino-4-phosphonobutyric acid (APB) reduces the sensitivity of ON- and OFF-responses in goldfish retina, although the ON-responses are reduced significantly more than the OFF-responses. This paper describes the effects of APB on behavioral sensitivity of goldfish to spatial sinusoidal gratings. Fish were classica...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(94)e0044-l
更新日期:1995-01-01 00:00:00
abstract::Achromatic losses in glaucoma would be expected to be greater than, or equal to, red-green chromatic losses if the following assumptions are made: (1) the function of the remaining axons is either unchanged or non-selectively reduced; (2) red-green chromatic information is signaled by the midget ganglion cell system; ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(97)00033-3
更新日期:1997-08-01 00:00:00
abstract::We report on the ability of human observers to discriminate local second-order shape of quadratic stereo-defined surfaces. Local second-order shape can be specified by two parameters: the curvedness (a scale-dependent quantity describing overall curvature of a shape) and the shape index (a scale-independent quantity d...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(94)90285-2
更新日期:1994-09-01 00:00:00
abstract::Physiological and behavioral evidence shows that the directionally preponderant subcortical control of optokinetic nystagmus (OKN) in lower mammals is supplemented in higher mammals by bidirectional cortical control. It is hypothesized that this cortical control allows higher mammals to cope with the parallactic movem...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(87)90109-x
更新日期:1987-01-01 00:00:00
abstract::Is acetylcholinesterase (AChE) a reliable marker for cholinergic activity in the cat and rat retinas? To evaluate this question, radial sections, labeled for AChE, have been compared to sections labeled for choline acetyltransferase (ChAT). Within the inner plexiform layer (IPL) of each species, two lightly-stained AC...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(93)90165-s
更新日期:1993-09-01 00:00:00
abstract::We assessed the role of saliency in driving observers to fixate the eyes in social scenes. Saliency maps (Itti & Koch, 2000) were computed for the scenes from three previous studies. Saliency provided a poor account of the data. The saliency values for the first-fixated locations were extremely low and no greater than...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2009.09.014
更新日期:2009-12-01 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::Shape representation is accomplished by a series of cortical stages in which cells in the first stage (V1) have local receptive fields tuned to contrast at a particular scale and orientation, each well modeled as a Gabor filter. In succeeding stages, the representation becomes largely invariant to Gabor coding (Kobata...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2011.12.012
更新日期:2012-02-15 00:00:00
abstract::A large number of studies, using a wide variety of experimental techniques, have investigated the "higher-order" color mechanisms proposed by Krauskopf and colleagues in 1986. Results reviewed here come from studies of chromatic discrimination at threshold, habituation, classification images, spatial alignment and ori...
journal_title:Vision research
pub_type: 杂志文章,评审
doi:10.1016/j.visres.2009.07.005
更新日期:2009-11-01 00:00:00
abstract::The effects of aspartate (Asp) on the ERG and on neuronal, glial, and K+ responses were monitored continuously in the superfused mudpuppy eyecup. Asp induced a time-dependent sequence of events which may be divided into three stages: Stage 1, initially, light-evoked responses throughout the retina are depressed; Stage...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(84)90113-5
更新日期:1984-01-01 00:00:00
abstract::We investigated the manner in which the outputs of the three postreceptoral mechanisms (red-green, blue-yellow and luminance) combine to determine contrast threshold. We used a subthreshold summation paradigm to test whether the combination of the postreceptoral mechanism outputs could be described by a probability su...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(98)00137-0
更新日期:1999-02-01 00:00:00
abstract::We compared reading speed with two fonts, Dutch (serif) and Swiss (sans serif). Text was displayed on a computer monitor, white letters on black, with the RSVP method. Luminance of the letters was either 146.0 or 0.146 cd m-2. Lower-case x-height of the fonts was approximately 5.5 times as large as letter acuity. At t...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(98)00116-3
更新日期:1998-09-01 00:00:00
abstract::The orientation disparity field from two orthographic views of an inclined planar surface patch (covered by straight lines) is analyzed, and a new tool to extract the patch orientation is provided: the function coupling the average orientation of each pair of corresponding surface contours with their orientation dispa...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2008.08.015
更新日期:2008-11-01 00:00:00
abstract::When participants can temporally prepare for a visual target stimulus, responses to this stimulus are faster and more accurate. Recent accounts attribute these effects either to an earlier accumulation of stimulus information or to an increased rate of information sampling. The present study examines whether temporal ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2010.03.011
更新日期:2010-06-01 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::Amblyopic subjects were asked to memorize circles of different radii (2, 4 and 6 degrees), and then to reconstruct them monocularly with each eye, point by point (12 points per circle). The resulting two-dimensional maps of visual space showed considerable distortions, including expansion, shrinkage and torsion of spe...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(93)90188-3
更新日期:1993-03-01 00:00:00
abstract::Observers viewed 200 msec presentations of gratings containing first (0.5 c/deg) and third (1.5 c/deg) harmonic components. The phase of the third harmonic and the absolute position of the grating on the screen varied randomly from trial to trial. Classification of the phase relation (0, 90, 180 or 270 deg was 99% per...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(84)90157-3
更新日期:1984-01-01 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
pub_type: 杂志文章
doi:10.1016/0042-6989(93)90007-j
更新日期:1993-10-01 00:00:00
abstract::The visual system can represent a partially occluded 3-D surface from images of separated surface segments. The underlying amodal surface integration process accomplishes this by amodally extending each surface segment behind the occluder (amodal surface extension) and integrating the extended surfaces to form a whole...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2017.10.005
更新日期:2018-02-01 00:00:00
abstract::Texture information about surface shape can be decomposed into three constituents: compression, density and scaling. Blake, Bülthoff and Sheinberg's (1993, Vision Research, 33, 1723-1737) Ideal Observer theory of slant from texture predicts that the relative contribution of compression and density to the percept of pl...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(95)00177-8
更新日期:1996-04-01 00:00:00
abstract::Previous studies [e.g. Vision Research 40 (2000) 173] have shown that when observers are required to selectively attend to one of two, spatially-adjacent patches containing either first-order (luminance-defined) or second-order (contrast-defined) motion, threshold sensitivity for identifying the direction of second-or...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2003.07.005
更新日期:2003-12-01 00:00:00
abstract::In the present study we addressed the issue of whether the Gestalt principle of grouping by similarity (iso-orientation) subtends extraction of straight contours made up of disconnected, iso-oriented Gabor elements, whether collinear (snakes) or parallel (ladders). To prevent the use of the most obvious grouping princ...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/j.visres.2012.07.021
更新日期:2012-10-15 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::A 3-D curvature contrast effect has been reported in shading-and-texture-defined (Curran & Johnson (1996). Vision Research 36, 3641-3653) and in stereoscopically defined (te Pas, Rogers, & Ledgeway (2000). Current Psychology Letters: Brain, Behaviour and Cognition 1, 117-126) stimuli. Our experiments show that a clear...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/s0042-6989(01)00208-5
更新日期:2001-12-01 00:00:00
abstract::The present study provides new clues about visual processes underlying the human pupillary responses evoked by achromatic spatial patterns. The pupillary responses can be modeled as a combination of two processes, a temporally transient process which saturates with increasing contrast and a temporally sustained proces...
journal_title:Vision research
pub_type: 杂志文章
doi:10.1016/0042-6989(93)90103-4
更新日期:1993-11-01 00:00:00