Effects of adapting luminance and stimulus contrast on the temporal and spatial limits of short-range motion.

abstract：:This study examined spatial-frequency effects on a motion-pooling process in which spatially distributed local one-dimensional motion signals are integrated into the perception of global two-dimensional motion. Motion pooling over two- to three-octave frequency differences was found to be nearly impossible when all Ga...

journal_title：Vision research

authors： Maruya K,Amano K,Nishida S

更新日期：2010-06-01 00:00:00

abstract：:Deuteranomalous trichromacy is the most common form of inherited color-vision deficiency. A modern description of its cause is a single abnormality: the normal middle-wave cone photopigment (M) is replaced by a shifted middle-wave pigment (M) that is shared by all deuteranomalous trichromats. This explanation, however...

journal_title：Vision research

authors： Shevell SK,He JC

更新日期：1997-05-01 00:00:00

abstract：:We have examined the ability of observers to parse bimodal local-motion distributions into two global motion surfaces, either overlapping (yielding transparent motion) or spatially segregated (yielding a motion boundary). The stimuli were random dot kinematograms in which the direction of motion of each dot was drawn ...

journal_title：Vision research

authors： Smith AT,Curran W,Braddick OJ

更新日期：1999-03-01 00:00:00

abstract：:Binocular sensory fusion which was previously thought to have a maximum spatial extent at the fovea of 1 deg is at least 600% larger when stimulated by low spatial frequency (coarse) detail. This upper limit for sensory fusion has a constant phase disparity limit of 90 deg which corresponds to the monocular Rayleigh c...

journal_title：Vision research

authors： Schor C,Wood I,Ogawa J

更新日期：1984-01-01 00:00:00

abstract：:In two experiments we measured object recognition performance as a function of delay. In Experiment 1 we presented half of an image of an object, and then the other half after a variable delay. Objects were subdivided into top versus bottom halves, left versus right halves, or vertical strips. In Experiment 2 we separ...

journal_title：Vision research

authors： Servos P,Olds ES,Planetta PJ,Keith Humphrey G

更新日期：2005-06-01 00:00:00

abstract：:We have used surface-based atlases of the cerebral cortex to analyze the functional organization of visual cortex in humans and macaque monkeys. The macaque atlas contains multiple partitioning schemes for visual cortex, including a probabilistic atlas of visual areas derived from a recent architectonic study, plus su...

journal_title：Vision research

authors： Van Essen DC,Lewis JW,Drury HA,Hadjikhani N,Tootell RB,Bakircioglu M,Miller MI

更新日期：2001-01-01 00:00:00

abstract：:The purpose of this study was to demonstrate the effect of human magnocellular (M)-pathway disruption on global motion perception. Coherence thresholds for global motion direction discrimination in random dot patterns were determined at slow and moderate dot speeds: (1) after adaptation to full-field sinusoidal flicke...

journal_title：Vision research

authors： Chapman C,Hoag R,Giaschi D

更新日期：2004-01-01 00:00:00

abstract：:There are encouraging advances in prosthetic vision for the blind, including retinal and cortical implants, and other "sensory substitution devices" that use tactile or electrical stimulation. However, they all have low resolution, limited visual field, and can display only few gray levels (limited dynamic range), sev...

journal_title：Vision research

authors： Jung JH,Aloni D,Yitzhaky Y,Peli E

更新日期：2015-06-01 00:00:00

abstract：:Evidence obtained using the dynamic grouping method has shown that the grouping of an object's connected surfaces has properties characteristic of a nonlinear dynamical system. When a surface's luminance changes, one of its boundaries is perceived moving across the surface. The direction of this dynamic grouping (DG) ...

journal_title：Vision research

authors： Hock HS,Schöner G

更新日期：2016-09-01 00:00:00

abstract：:Over the last few years it is becoming increasingly apparent that an important role of the posterior parietal cortex is to process sensory information for the purpose of planning actions. We review studies showing that a large component of neural activity in area LIP is related to planning saccades and activity in a n...

journal_title：Vision research

authors： Snyder LH,Batista AP,Andersen RA

更新日期：2000-01-01 00:00:00

abstract：:Electrophysiological recording and microspectrophotometry were used to analyze retinal function in representatives of the two surviving genera of holostean grade fish--the bowfin (Amia calva) and gars (Lepisosteus sp.). The properties of the cone photopigments, horizontal cells and ganglion cells show that these holos...

journal_title：Vision research

authors： Burkhardt DA,Gottesman J,Levine JS,MacNichol EF Jr

更新日期：1983-01-01 00:00:00

abstract：:Learning to read is extremely difficult for about 10% of children across cultures because they are affected by developmental dyslexia (DD). According to the dominant view, DD is considered an auditory-phonological processing deficit. However, accumulating evidence from developmental and clinical vision science, sugges...

journal_title：Vision research

authors： Gori S,Facoetti A

更新日期：2014-06-01 00:00:00

abstract：:Accurate saccadic and vergence eye movements towards selected visual targets are fundamental to perceive the 3-D environment. Despite this importance, shifts in eye gaze are not always perfect given that they are frequently followed by small corrective eye movements. The oculomotor system receives distinct information...

journal_title：Vision research

authors： Pérez Zapata L,Aznar-Casanova JA,Supèr H

更新日期：2013-06-28 00:00:00

abstract：:A major factor underlying the prolonged postnatal improvement of visual acuity in primates is an increase in the sampling limit imposed by the photoreceptor mosaic, which may be as much as 5-fold. Further factors operating peripheral to neurons of the lateral geniculate nucleus, which might include changes in neural c...

journal_title：Vision research

authors： Jacobs DS,Blakemore C

更新日期：1988-01-01 00:00:00

abstract：:We propose and test the simple hypothesis that a chicken eye can emmetropize without cues derived from accommodation or colour just by maximizing retinal image contrast. Using different translucent occluders with known modulation transfer functions we found that deprivation myopia is correlated with the amount of imag...

journal_title：Vision research

authors： Bartmann M,Schaeffel F

更新日期：1994-04-01 00:00:00

abstract：:Previous research has suggested that whereas some techniques show that subjects with a specific reading disability (SRD) have greater visible persistence than controls, a temporal integration of form technique does not. It has been suggested that the failure of the temporal integration task to show a difference result...

journal_title：Vision research

authors： Hogben JH,Rodino IS,Clark CD,Pratt C

更新日期：1995-07-01 00:00:00

abstract：PURPOSE:Less accommodation was found when human subjects read in blue (peak at about 440 nm) than when they read in red light (above 600 nm; [Kroger & Binder, British Journal of Ophthalmology 84 (2000) 890]). On the other hand, emmetropization in chickens did not appear to compensate for the chromatic defocus (385 nm v...

journal_title：Vision research

authors： Seidemann A,Schaeffel F

更新日期：2002-09-01 00:00:00

abstract：:A considerable body of evidence suggests the existence of a two-stage mechanism for the detection of global motion. In the first stage the motion of elongated contours is extracted and then at the second stage these one-dimensional (1D) motion signals are combined. What is the nature of the computation carried out in ...

journal_title：Vision research

authors： Rubin N,Hochstein S

更新日期：1993-07-01 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

authors： Erkelens CJ,Van EE R

更新日期：1997-07-01 00:00:00

abstract：:In two experiments we examined the performance of Asian and Caucasian participants as they were asked to estimate the ethnic composition of arrays of 16 concurrently presented faces. Across trials we systematically varied the physical proportion of Asian and Caucasian faces presented in the arrays using the method of ...

journal_title：Vision research

authors： Thornton IM,Srismith D,Oxner M,Hayward WG

更新日期：2019-04-01 00:00:00

abstract：:Current theories of second-order motion perception postulate that such motion is detected by either a high-level mechanism which computes the temporal correspondences between "features" extracted from the image, or low-level motion mechanisms which operate on a nonlinear, neural transformation of the luminance profile...

journal_title：Vision research

authors： Ledgeway T,Smith AT

更新日期：1994-10-01 00:00:00

abstract：:There are recurrent reports that Rayleigh matches are bimodally distributed in the colour-normal male population. Similar claims have been made for the distribution of the spectral locus of unique green. Moreover, a positive correlation has sometimes been reported between Rayleigh matches and unique green. Using a com...

journal_title：Vision research

authors： Jordan G,Mollon JD

更新日期：1995-03-01 00:00:00

abstract：:The data made available by this experiment add two points to the information obtained by previous studies on eccentric vision and lateral masking. First, they demonstrate a clear effect of target-mask similarity on visual gap-resolution in eccentric vision: increasing target-mask similarity systematically decreases re...

journal_title：Vision research

authors： Nazir TA

更新日期：1992-04-01 00:00:00

abstract：:When an observer moves through the world, the motions of images on the retina provide information about the direction of observer motion, or "heading", and about the relative distance to surfaces in the scene. While it is simple to compute these quantities when the observer moves in a straight line, the computation be...

journal_title：Vision research

authors： Royden CS,Picone LJ

更新日期：2007-11-01 00:00:00

abstract：:In previous work, subjects looked at a target stabilized at the fovea, superimposed on a sinusiodally moving OKN stimulus. The stabilized target (no retinal-slip) suppressed OKN leaving residual eye movements that were often in counterphase with the OKN stimulus motion. In the present study we explored how this type o...

journal_title：Vision research

authors： Wyatt HJ,Pola J,Lustgarten M,Aksionoff E

更新日期：1995-10-01 00:00:00

abstract：:The processing of letters within strings is challenging for beginning readers. Letter identification is affected by visual similarity, loss of information with eccentricity and interference from nearby letters. In contrast, visual attention enhances letter identification. We here explored whether visual attention reso...

journal_title：Vision research

authors： Valdois S,Roulin JL,Line Bosse M

更新日期：2019-12-01 00:00:00

abstract：:Visual perceptual learning describes the improvement of visual perception with repeated practice. Previous research has established that the learning effects of perceptual training may be transferable to untrained stimulus attributes such as spatial location under certain circumstances. However, the mechanisms involve...

journal_title：Vision research

authors： Larcombe SJ,Kennard C,Bridge H

更新日期：2017-06-01 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

authors： Lam DM,Ayoub GS

更新日期：1983-01-01 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

authors： Souto D,Kerzel D

更新日期：2011-01-01 00:00:00

abstract：:The study of motion perception through classical psychophysical methods has suggested that independent spatiotemporal filters acting over specific locations in retinal images carry out early motion processing. On the other hand, individual differences approaches have been able to identify a structure of spatiotemporal...

journal_title：Vision research

authors： Luna R,Serrano-Pedraza I

更新日期：2020-10-01 00:00:00