Chromatic detection and discrimination in the periphery: a postreceptoral loss of color sensitivity.

abstract：:Adult teleost fish retinas can regenerate neurons following either surgical or pharmacological injury. The cellular milieu of the damaged retina within which regenerated neurons are produced might be different in these two model systems of retinal injury, and thus the phenotypic attributes of regenerated neurons in th...

journal_title：Visual neuroscience

authors： Cameron DA,Powers MK

更新日期：2000-07-01 00:00:00

abstract：:Multifocal VEP (mfVEP) responses were obtained from 13 normal human subjects for nine test conditions, covering three viewing conditions (dichoptic and left and right monocular), and three different temporal stimulation forms (rapid contrast reversal, rapid pattern pulse presentation, and slow pattern pulse presentati...

journal_title：Visual neuroscience

authors： James AC,Ruseckaite R,Maddess T

更新日期：2005-01-01 00:00:00

abstract：:Nucleus rotundus and nucleus dorsolateralis posterior (DLP) are the thalamic components of two parallel pathways within the tectofugal division of the pigeon visual system. An earlier study (Hodos, Weiss & Bessette, 1986) had shown that lesions in direct telencephalic recipients of projections from rotundus and DLP pr...

journal_title：Visual neuroscience

authors： Kertzman C,Hodos W

更新日期：1988-01-01 00:00:00

abstract：:To examine the role of visual area V4 in pattern vision, we tested two monkeys with lesions of V4 on tasks that required them to discriminate the orientation of contours defined by several different cues. The cues used to separate the contours from their background included luminance, color, motion, and texture, as we...

journal_title：Visual neuroscience

authors： De Weerd P,Desimone R,Ungerleider LG

更新日期：1996-05-01 00:00:00

abstract：:The neural mechanisms driving perception and saccades during search use information about the target but are also based on an inhibitory surround not present in the target luminance profile (e.g., Eckstein et al., 2007). Here, we ask whether these inhibitory surrounds might reflect a strategy that the brain has adapte...

journal_title：Visual neuroscience

authors： Zhang S,Abbey CK,Eckstein MP

更新日期：2009-01-01 00:00:00

abstract：:AMPA-selective glutamate receptors play a major role in glutamatergic neurotransmission in the retina and are expressed in a variety of neuronal subpopulations. In the present study, immunocytochemical techniques were used to visualize the distribution of GluR2 and GluR4 subunits in the cat retina. Results were compar...

journal_title：Visual neuroscience

authors： Qin P,Pourcho RG

更新日期：1999-11-01 00:00:00

abstract：:Vision begins with photoisomerization of 11-cis retinal to the all-trans conformation within the chromophore-binding pocket of opsin, leading to activation of a biochemical cascade. Release of all-trans retinal from the binding pocket curtails but does not fully quench the ability of opsin to activate transducin. All-...

journal_title：Visual neuroscience

authors： Isayama T,McCabe England SL,Crouch RK,Zimmerman AL,Makino CL

更新日期：2009-05-01 00:00:00

abstract：:Absorbance spectra of cone outer segments and oil droplets were recorded microspectrophotometrically in the retina of the red-eared turtle, Trachemys scripta elegans. There are four cone visual pigments, with lambda(max) = 617 nm (red sensitive), 515 nm (green sensitive), 458 nm (blue sensitive), and 372 nm (UV-sensit...

journal_title：Visual neuroscience

authors： Loew ER,Govardovskii VI

更新日期：2001-09-01 00:00:00

abstract：:Agrin is a large extracellular matrix protein that directs the accumulation of acetylcholine receptors at the neuromuscular junction. Recent evidence suggests that agrin may be involved in organizing synapses in the visual system as well. Focussing on the pathway that controls accommodation and pupilloconstriction, th...

journal_title：Visual neuroscience

authors： McAvoy M,Smith MA,Fujii JT

更新日期：1996-03-01 00:00:00

abstract：:A new tissue slice preparation of the cuttlefish eye is described that permits patch-clamp recordings to be acquired from intact photoreceptors during stimulation of the retina with controlled light flashes. Whole-cell recordings using this preparation, from the retinas of very young Sepia officinalis demonstrated tha...

journal_title：Visual neuroscience

authors： Chrachri A,Nelson L,Williamson R

更新日期：2005-05-01 00:00:00

abstract：:Ablation of visual cortical areas 17 and 18 in neonatal and young adult cats induces novel retinal projections to terminate bilaterally in the lateral posterior nucleus (LP) at a position ventromedial from the medial interlaminar nucleus. Comparison with the visual-field maps of LP indicate that the terminations are f...

journal_title：Visual neuroscience

authors： Payne BR,Foley HA,Lomber SG

更新日期：1993-07-01 00:00:00

abstract：:A series of psychophysical tests examining early and later aspects of image-motion processing were conducted in a patient with bilateral lesions involving the posterior visual pathways, affecting the lateral parietal-temporal-occipital cortex and the underlying white matter (as shown by magnetic resonance imaging stud...

journal_title：Visual neuroscience

authors： Vaina LM,Lemay M,Bienfang DC,Choi AY,Nakayama K

更新日期：1990-10-01 00:00:00

abstract：:Recordings were taken from infragranular layers of area 17 of anesthetized monkeys with an array of 30 microelectrodes matching about one hypercolumn. From intracortical spike-train correlations, the novel neuronal property "delay scale position" related to retino-cortical delays, was derived. Relationships were estab...

journal_title：Visual neuroscience

authors： Krüger J

更新日期：1990-08-01 00:00:00

abstract：:Reduction of blood flow to the rat retina was achieved by either clamping both carotid arteries briefly (24 min) or combining clamping of the carotid arteries with permanent occlusion of the vertebral arteries. Analysis of retinas 6 days after operations showed that GFAP immunoreactivity is expressed throughout the re...

journal_title：Visual neuroscience

authors： Osborne NN,Block F,Sontag KH

更新日期：1991-12-01 00:00:00

abstract：:While color vision mediated by rod photoreceptors in dim light is possible (Kelber & Roth, 2006), most animals, including humans, do not see in color at night. This is because their retinas contain only a single class of rod photoreceptors. Many of these same animals have daylight color vision, mediated by multiple cl...

journal_title：Visual neuroscience

authors： Manning JR,Brainard DH

更新日期：2009-01-01 00:00:00

abstract：:Rod and cone photoresponses in a variety of species have been accurately described with linear multistage filter models. In this study, the response latency and initial coding of intensity at two higher levels of visual processing are related to such photoreceptor responses. One level is the retinal output (spiking di...

journal_title：Visual neuroscience

authors： Donner K

更新日期：1989-07-01 00:00:00

abstract：:Recently, we introduced a phototransduction model that was able to account for the reproducibility of vertebrate rod single-photon responses (SPRs) (Hamer et al., 2003). The model was able to reproduce SPR statistics by means of stochastic activation and inactivation of rhodopsin (R*), transducin (G alpha ), and phosp...

journal_title：Visual neuroscience

authors： Hamer RD,Nicholas SC,Tranchina D,Lamb TD,Jarvinen JL

更新日期：2005-07-01 00:00:00

abstract：:This paper reviews evidence that the superior colliculus (SC) of the midbrain represents visual direction and certain aspects of saccadic eye movements in the distribution of activity across a population of cells. Accurate and precise eye movements appear to be mediated, in part at least, by cells of the SC that have ...

journal_title：Visual neuroscience

authors： McIlwain JT

更新日期：1991-01-01 00:00:00

abstract：:The recent isolation of at least five different cDNAs encoding functional subunits of glutamate receptors (GluR1 to GluR5) has revealed a diversity whose function is not understood. To learn more about how these different receptor subunits are used in the brain, we undertook an in situ hybridization study of the retin...

journal_title：Visual neuroscience

authors： Hughes TE,Hermans-Borgmeyer I,Heinemann S

更新日期：1992-01-01 00:00:00

abstract：:The visual information that first-order cortical cells receive is contained in the visually evoked spike trains of geniculate relay cells. To address functional issues such as the ON/OFF structure of visual cortical receptive fields with modelling studies, a geniculate cell model is needed where the spatial and tempor...

journal_title：Visual neuroscience

authors： Gazères N,Borg-Graham LJ,Frégnac Y

更新日期：1998-11-01 00:00:00

abstract：:Mechanisms that mediate the calcium influx in mammalian horizontal cells were studied. Horizontal cells (HCs) enzymatically dissociated from the rabbit retina were recorded by the whole-cell configuration of the patch-clamp technique and by calcium image ratioespectrophotometry of Fura-2 loaded cells. AMPA-preferring ...

journal_title：Visual neuroscience

authors： Rivera L,Blanco R,de la Villa P

更新日期：2001-11-01 00:00:00

abstract：:The phosphoinositide (PI) intracellular signaling pathway, which triggers Ca2+ release from intracellular stores, appears to be a central feature of phototransduction in most invertebrate species studied. Procedures designed to inhibit PI-pathway reactions cause suppression of excitation to dim lights. However, in Lim...

journal_title：Visual neuroscience

authors： Johnson EC,Gray-Keller MP,O'Day PM

更新日期：1998-01-01 00:00:00

abstract：:Natural scenes contain a variety of visual cues that facilitate boundary perception (e.g., luminance, contrast, and texture). Here we explore whether single neurons in early visual cortex can process both contrast and texture cues. We recorded neural responses in cat A18 to both illusory contours formed by abutting gr...

journal_title：Visual neuroscience

authors： Song Y,Baker CL Jr

更新日期：2007-01-01 00:00:00

abstract：:We have studied the influence of chromatic adaptation upon the perceived visual position of a test stimulus using a Vernier alignment task. Maximum and minimum offsets in spatial position are generated when the adapting and test stimuli lie on the same and orthogonal axes in MBDKL color space, respectively. When the t...

journal_title：Visual neuroscience

authors： McKeefry DJ,McGraw PV,Vakrou C,Whitaker D

更新日期：2004-05-01 00:00:00

abstract：:During early mammalian development, inputs from the two retinas intermix within the lateral geniculate nucleus (LGN), then segregate during the first postnatal week into layers that receive input from a single retina. Functionally, the LGN also changes markedly during the first postnatal month; early geniculate respon...

journal_title：Visual neuroscience

authors： Cook PM,Prusky G,Ramoa AS

更新日期：1999-05-01 00:00:00

abstract：:It is widely accepted that human color vision is based on two types of cone-opponent mechanism, one differencing L and M cone types (loosely termed "red-green"), and the other differencing S with the L and M cones (loosely termed "blue-yellow"). The traditional view of the early processing of human color vision sugges...

journal_title：Visual neuroscience

authors： Sankeralli MJ,Mullen KT

更新日期：2001-01-01 00:00:00

abstract：:Immunocytochemistry and retrograde labeling were used to define the thalamic projections of calbindin- and parvalbumin-containing cells in superficial layers of the rat's superior colliculus (SC). Quantitative analysis revealed that 90.8 +/- 2.2% (mean +/- standard deviation) of the calbindin-immunoreactive neurons in...

journal_title：Visual neuroscience

authors： Lane RD,Allan DM,Bennett-Clarke CA,Howell DL,Rhoades RW

更新日期：1997-03-01 00:00:00

abstract：:The visual response to a flash given in the dark is known to saturate according to the Michaelis-Menten relationship. Nevertheless, the incremental response from increasing levels of mean luminance tends to follow a Weber-Fechner relationship well into the saturation range determined from the Michaelis-Menten results....

journal_title：Visual neuroscience

authors： Chappell RL,Naka K

更新日期：1991-04-01 00:00:00

abstract：:The hypothesis that dichromatic behavior on a clinical anomaloscope can be explained by the complement and arrangement of the long- (L) and middle-wavelength (M) pigment genes was tested. It was predicted that dichromacy is associated with an X-chromosome pigment gene array capable of producing only a single functiona...

journal_title：Visual neuroscience

authors： Neitz M,Carroll J,Renner A,Knau H,Werner JS,Neitz J

更新日期：2004-05-01 00:00:00

abstract：:The abundance and spatial distribution of retinal cone photoreceptors change during thyroid hormone (TH)-induced and natural development of rainbow trout (Oncorhynchus mykiss). These changes are thought to allow the fish to adapt to different photic environments throughout its life history. To date, the ontogeny of ra...

journal_title：Visual neuroscience

authors： Veldhoen K,Allison WT,Veldhoen N,Anholt BR,Helbing CC,Hawryshyn CW

更新日期：2006-03-01 00:00:00