Attentional effects on afterimages: theory and data.

abstract：:The spatial extent of interference from nearby object or contours (the critical spacing of "crowding") has been thoroughly characterized across the visual field, typically using high contrast achromatic stimuli. However, attempts to link this measure with known properties of physiological pathways have been inconclusi...

journal_title：Vision research

authors： Coates DR,Chung STL

更新日期：2016-05-01 00:00:00

abstract：:We have examined the ability of observers to determine the direction of movement of a variety of colored plaid patterns. When the two plaid components are of unequal spatial frequency or of unequal luminance or chromatic contrast, observers judge the direction of movement incorrectly. These errors are correlated with ...

journal_title：Vision research

authors： Kool FL,De Valois KK

更新日期：1992-04-01 00:00:00

abstract：:Retinal prostheses attempt to restore some amount of vision to totally blind patients. Vision evoked this way will be however severely constrained because of several factors (e.g., size of the implanted device, number of stimulating contacts, etc.). We used simulations of artificial vision to study how such restrictio...

journal_title：Vision research

authors： Pérez Fornos A,Sommerhalder J,Pittard A,Safran AB,Pelizzone M

更新日期：2008-07-01 00:00:00

abstract：:This study compared color appearance data for two populations of middle-aged women: (1) women using the selective estrogen receptor modulator tamoxifen as adjuvant therapy following successful treatment for early-stage breast cancer, and (2) healthy amenorrheic (peri- or post-menopausal) control subjects not using any...

journal_title：Vision research

authors： Eisner A,Incognito LJ

更新日期：2006-05-01 00:00:00

abstract：:We examined variation in the visual system both within and among seven species of darters, colorful freshwater fishes of the genus Etheostoma. Using microspectrophotometry, we found that darters possess rod photoreceptor cells, single cone photoreceptor cells containing middle wavelength sensitive (MWS) visual pigment...

journal_title：Vision research

authors： Gumm JM,Loew ER,Mendelson TC

更新日期：2012-02-15 00:00:00

abstract：:In a texture-segregation paradigm, subjects were asked to detect figures whose elements were segregated from background either because of temporal offset or because of differing orientations. Texture elements were either isoluminant or had high or low luminance contrast. At high luminance contrast, figures could be se...

journal_title：Vision research

authors： Leonards U,Singer W

更新日期：1998-01-01 00:00:00

abstract：:Several characteristic of aftereffects (especially the motion aftereffect) depend upon the square root of the time spent adapting. The same parameters are here examined for the contrast threshold elevation aftereffect. The time taken to recover is shown to be well predicted by root adaptation time (beyond a minimum du...

journal_title：Vision research

authors： Rose D

更新日期：1992-09-01 00:00:00

abstract：:Spatio-temporal boundary formation (SBF) refers to a perceptual process responsible for perception of moving, bounded surfaces from sequential changes in spatially separated local elements. Previous research has indicated that this process produces perception of global form, continuous boundaries and global motion fro...

journal_title：Vision research

authors： Shipley TF,Kellman PJ

更新日期：1997-05-01 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：:Central vision is substantially over represented in the lateral geniculate nucleus (dLGN) and striate cortex. The over representation could be accompanied by a selective expansion of central vision in parvocellular dLGN, in which case the ratio of parvocellular to magnocellular inputs to striate cortex should change w...

journal_title：Vision research

authors： Azzopardi P,Jones KE,Cowey A

更新日期：1999-06-01 00:00:00

abstract：:Which coordinate system do we use to track moving objects? In a previous study using smooth pursuit eye movements, we argued that targets are tracked in both retinal (retinotopic) and scene-centered (allocentric) coordinates (Howe, Pinto, & Horowitz, 2010). However, multiple object tracking typically also elicits sacc...

journal_title：Vision research

authors： Howe PD,Drew T,Pinto Y,Horowitz TS

更新日期：2011-03-02 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：:The attentional mechanisms in the brain responsible for fast pop-out search and slower difficult search have been shown to interact. Even if pop-out search is interrupted, by the addition of extra distractors to an initially simple search display, the partial computations calculated by the mechanisms responsible for p...

journal_title：Vision research

authors： Olds ES,Punambolam RJ

更新日期：2002-03-01 00:00:00

abstract：:After viewing directional motion, one is likely to perceive a subsequently presented directionally ambiguous motion as being in the same direction as the prior motion. The perceptual bias towards the most recent percept gradually develops as the interval between the prior stimulus and a subsequent test becomes longer....

journal_title：Vision research

authors： Kanai R,Knapen TH,van Ee R,Verstraten FA

更新日期：2007-09-01 00:00:00

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：:We compare improvement through training in vernier acuity under different feedback conditions in order to clarify the role of feedback during learning of a perceptual task and to test different (neural network) models of perceptual learning. Improvement of performance is measured in 49 observers under feedback, no fee...

journal_title：Vision research

authors： Herzog MH,Fahle M

更新日期：1997-08-01 00:00:00

abstract：:The gap effect refers to a reduction in the latency of saccades to peripherally appearing targets when the fixation point disappears a short time before target appearance. The effect has been attributed to a number of potential mechanisms that function to assist in the maintenance of fixation. One such mechanism, atte...

journal_title：Vision research

authors： Pratt J,Lajonchere CM,Abrams RA

更新日期：2006-08-01 00:00:00

abstract：:Electrophysiological recording demonstrated that visuo-tectal projections are topographically organised after optic nerve regeneration in aged Xenopus laevis. 3H-thymidine autoradiography confirmed previous reports [Taylor, Lack, & Easter, Eur. Journal of Neuroscience 1 (1989) 626-638] that cell division had already c...

journal_title：Vision research

authors： Beaver RS,Dunlop SA,Harman AM,Stirling RV,Easter SS,Roberts JD,Beazley LD

更新日期：2001-06-01 00:00:00

abstract：:Studies of high-level models of visual object categorization have left unresolved issues of neurobiological relevance, including how features are extracted from the image and the role played by memory capacity in categorization performance. We compared the ability of a comprehensive set of models to match the categori...

journal_title：Vision research

authors： Peters RJ,Gabbiani F,Koch C

更新日期：2003-09-01 00:00:00

abstract：:Before and after exposure to clockwise optical tilt, subjects' compensatory eye movements were recorded, as the head was oscillated around a vertical axis by the experimenter. An analysis of the horizontal and vertical components of eye movements showed a change in eye movement path in the clockwise direction. This co...

journal_title：Vision research

authors： Callan JW,Ebenholtz SM

更新日期：1982-01-01 00:00:00

abstract：:Temporal frequency discrimination was measured above threshold with a two-alternative spatial forced-choice procedure. Stimuli were two 1 deg homogeneous fields modulated around a mean luminance of 3.7 log trolands. Observers determined which of the two stimuli was modulated at a higher frequency. To avoid differences...

journal_title：Vision research

authors： Mandler MB

更新日期：1984-01-01 00:00:00

abstract：:The mechanisms underlying the parsing of a spatial distribution of velocity vectors into two adjacent (spatially segregated) or overlapping (transparent) motion surfaces were examined using random dot kinematograms. Parsing might occur using either of two principles. Surfaces might be defined on the basis of similarit...

journal_title：Vision research

authors： Smith AT,Curran W

更新日期：2000-01-01 00:00:00

abstract：:Match stimuli presented on one side of a contextual image were adjusted to have the same appearance as test stimuli presented on the other side. Both full color and isochromatic contextual images were used. Contextual image pairs were constructed that had identical S-cone image planes, while their L- and M-cone image ...

journal_title：Vision research

authors： Delahunt PB,Brainard DH

更新日期：2000-01-01 00:00:00

abstract：:Although the blind spot encodes no visual information, one never perceives an odd blob or blank there, but sees a complete scene of the world even when viewing monocularly. This phenomenon called "filling-in" might be related to mechanisms essential to surface perception, but the neural representation has still been u...

journal_title：Vision research

authors： Murakami I

更新日期：1995-04-01 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：:We investigated the effect of adaptation on orientation discrimination using two experienced observers, then replicated the main effects using a total of 50 naïve subjects. Orientation discrimination around vertical improved after adaptation to either horizontal or vertical gratings, but was impaired by adaptation at ...

journal_title：Vision research

authors： Clifford CW,Wyatt AM,Arnold DH,Smith ST,Wenderoth P

更新日期：2001-01-15 00:00:00

abstract：:A rotating Pulfrich effect is described and analysed in relation to the Fertsch-Pulfrich latency difference theory. Although some of the predictions conflicted with observations described by Pulfrich [Naturwissenschaften 10, 553-564 (1922)], they were confirmed by experiment, and led to a simple and sensitive method o...

journal_title：Vision research

authors： Nickalls RW

更新日期：1986-01-01 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

authors： Hawryshyn CW

更新日期：1991-01-01 00:00:00

abstract：:We investigated the patterns of two-dimensional spatial distortions in human amblyopia, using three different psychophysical mapping procedures. Strabismic and strabismic-anisometropic amblyopes showed consistent distortions, consisting in enlargement, shrinkage, or torsion of portions of the tested visual field. Pure...

journal_title：Vision research

authors： Sireteanu R,Thiel A,Fikus S,Iftime A

更新日期：2008-04-01 00:00:00

abstract：:Rods, cones and melanopsin containing intrinsically photosensitive retinal ganglion cells (ipRGCs) operate in concert to regulate pupil diameter. The temporal properties of intrinsic ipRGC signalling are distinct to those of rods and cones, including longer latencies and sustained signalling after light offset. We exa...

journal_title：Vision research

authors： Joyce DS,Feigl B,Cao D,Zele AJ

更新日期：2015-02-01 00:00:00