Multi-nucleate retinal pigment epithelium cells of the human macula exhibit a characteristic and highly specific distribution.

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：:To better understand the evolution of spatial and color vision, the number and spatial distributions of cones, rods, and optic nerve axon numbers were assessed in seven New World primates (Cebus apella, Saimiri ustius, Saguinus midas niger, Alouatta caraya, Aotus azarae, Calllithrix jacchus, and Callicebus moloch). Th...

journal_title：Visual neuroscience

authors： Finlay BL,Franco EC,Yamada ES,Crowley JC,Parsons M,Muniz JA,Silveira LC

更新日期：2008-05-01 00:00:00

abstract：:During their complex life history, anguilliform eels go through a major metamorphosis when developing from a fresh water yellow eel into a deep-sea silver eel. In addition to major changes in body morphology, the visual system also adapts from a fresh water teleost duplex retina with rods and cones, to a specialized d...

journal_title：Visual neuroscience

authors： Bowmaker JK,Semo M,Hunt DM,Jeffery G

更新日期：2008-05-01 00:00:00

abstract：:Using suction electrodes, photocurrent responses to 100-ms saturating flashes were recorded from isolated retinal rods of the larval-stage tiger salamander (Ambystoma tigrinum). The delay period (Tc) that preceded recovery of the dark current by a criterion amount (3 pA) was analyzed in relation to the flash intensity...

journal_title：Visual neuroscience

authors： Pepperberg DR,Cornwall MC,Kahlert M,Hofmann KP,Jin J,Jones GJ,Ripps H

更新日期：1992-01-01 00:00:00

abstract：:Early in life, visual experience appears to influence the refinement and maintenance of the orientation-selective responses of neurons in the primary visual cortex. After eye opening, the statistical structure of visually driven neural responses depends not only on the stimulus, but also on how the stimulus is scanned...

journal_title：Visual neuroscience

authors： Rucci M,Casile A

更新日期：2004-09-01 00:00:00

abstract：:In the present work, we explore the perceptual bases of infants' spontaneous looking preferences among isoluminant chromatic stimuli (Bornstein, 1975). Three experiments were conducted. In Experiment 1, adult subjects made brightness matches between a white standard and each of six isoluminant chromatic stimuli. The c...

journal_title：Visual neuroscience

authors： Teller DY,Civan A,Bronson-Castain K

更新日期：2004-05-01 00:00:00

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：:Two groups of retinal cone bipolar cells (CBCs) in rats were found to express voltage-gated Na+ channels. The axon terminals of the first group stratify in sublamina 2 of the inner plexiform layer (IPL) and partially overlap with the OFF-cholinergic band. This group was identified as type 3 CBCs. The axon terminals of...

journal_title：Visual neuroscience

authors： Cui J,Pan ZH

更新日期：2008-09-01 00:00:00

abstract：:To investigate the influence of voltage-sensitive conductances in shaping light-evoked responses of retinal bipolar cells, whole-cell recordings were made in the slice preparation of the tiger salamander, Ambystoma tigrinum. To study contrast encoding, the retina was stimulated with 0.5-s steps of negative and positiv...

journal_title：Visual neuroscience

authors： Thoreson WB,Burkhardt DA

更新日期：2003-01-01 00:00:00

abstract：:In the arthropod medulla, which is the second ganglion on the afferent visual pathway, a column of about 40 cells represents each point in space (i.e. compound eye facet). Some stages of visual processing underlying the responses of one class of cells in the locust medulla have been identified. These transient cells g...

journal_title：Visual neuroscience

authors： Osorio D

更新日期：1991-10-01 00:00:00

abstract：:Many cell types in the retina are coupled via gap junctions and so there is a pressing need for a potent and reversible gap junction antagonist. We screened a series of potential gap junction antagonists by evaluating their effects on dye coupling in the network of A-type horizontal cells. We evaluated the following c...

journal_title：Visual neuroscience

authors： Pan F,Mills SL,Massey SC

更新日期：2007-07-01 00:00:00

abstract：:GABA is a major inhibitory neurotransmitter in the mammalian retina and it acts at many different sites via a variety of postsynaptic receptors. These include GABAA receptors and bicuculline-resistant GABAC receptors. The release of acetylcholine (ACh) is inhibited by GABA and strongly potentiated by GABA antagonists....

journal_title：Visual neuroscience

authors： Massey SC,Linn DM,Kittila CA,Mirza W

更新日期：1997-09-01 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：:Eye growth and refraction are regulated by visual processing in the retina. Until now, the messengers released by the retina to induce these changes are largely unknown. Previously, it was found that glucagon amacrine cells respond to defocus in the retinal image and even to its sign. The expression of the immediate-e...

journal_title：Visual neuroscience

authors： Feldkaemper MP,Schaeffel F

更新日期：2002-11-01 00:00:00

abstract：:Adult Japanese quail have an endogenous circadian clock located in their eyes that has been shown to regulate melatonin biosynthesis. We investigated if a circadian oscillator is present in cultures of dispersed embryonic quail retina. Melatonin release in retinal cell culture is modulated by the light cycle, indicati...

journal_title：Visual neuroscience

authors： Pierce ME

更新日期：1999-09-01 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：:We have described the currents flowing across the presynaptic membranes of the four median photoreceptors of the giant barnacle, Balanus nubilus, using a quasi-voltage clamp arrangement. Membrane potential, measured in the terminal region of one photoreceptor, was controlled in all four terminals by feedback current s...

journal_title：Visual neuroscience

authors： Hayashi JH,Stuart AE

更新日期：1993-03-01 00:00:00

abstract：:We tested the hypothesis that gamma-aminobutyric acid (GABA) is the transmitter released by barnacle photoreceptors onto postsynaptic cells (I-cells). GABA was applied to I-cells either by superfusion or by ejecting it with pressure from a pipette positioned close to the I-cell's soma. The I-cell's response to GABA wa...

journal_title：Visual neuroscience

authors： Callaway JC,Stuart AE

更新日期：1989-10-01 00:00:00

abstract：:Lateral suprasylvian visual cortex in the cat has been studied extensively, but its retinotopic organization remains controversial. Although some investigators have divided this region into many distinct areas, others have argued for a simpler organization. A clear understanding of the region's retinotopic organizatio...

journal_title：Visual neuroscience

authors： Sherk H,Mulligan KA

更新日期：1993-01-01 00:00:00

abstract：:We examined achromatic contrast discrimination in asymptomatic carriers of 11778 Leber's hereditary optic neuropathy (LHON 18 controls) and 18 age-match were also tested. To evaluate magnocellular (MC) and Parvocellular (PC) contrast discrimination, we used a version of Pokorny and Smith's (1997) pulsed/steady-pedesta...

journal_title：Visual neuroscience

authors： Gualtieri M,Bandeira M,Hamer RD,Costa MF,Oliveira AG,Moura AL,Sadun F,De Negri AM,Berezovsky A,Salomão SR,Carelli V,Sadun AA,Ventura DF

更新日期：2008-05-01 00:00:00

abstract：:The ability of freely-flying honeybees to track moving targets was examined by training them to collect a reward on a target, and then videotaping their approach to the target while it was in motion. Training experiments were carried out with several groups of bees, using various colors for the target and the backgrou...

journal_title：Visual neuroscience

authors： Zhang SW,Wang XA,Liu ZL,Srinivasan MV

更新日期：1990-04-01 00:00:00

abstract：:Observers performed red-green and yellow-blue hue cancellation tasks for a 0.8-deg circular test field on a dark surround, by manipulating the excitation level of one cone class while the other two classes were held constant. The results of the red-green judgments conformed to classical opponent color theory in that b...

journal_title：Visual neuroscience

authors： Knoblauch K,Shevell SK

更新日期：2001-11-01 00:00:00

abstract：:The topographical distributions of the relative ratio of long- (L) and middle- (M) wavelength sensitive cone opsin messenger RNA (mRNA) in human and baboon retinas were mapped using real-time polymerase chain reaction. The L:M mRNA ratio increased in a central-to-peripheral gradient in both species, being quite pronou...

journal_title：Visual neuroscience

authors： Neitz M,Balding SD,McMahon C,Sjoberg SA,Neitz J

更新日期：2006-05-01 00:00:00

abstract：:Four experiments were performed to assess the effects of ON channel blockade with the glutamate analog 2-amino-4-phosphonobutyrate (APB) on brightness and contrast perception in monkeys. In Experiment 1, we demonstrate that stimuli brighter than background (incremental stimuli) appear less bright following ON channel ...

journal_title：Visual neuroscience

authors： Dolan RP,Schiller PH

更新日期：1994-01-01 00:00:00

abstract：:We studied the functional connectivity of cells in the lateral geniculate nucleus (LGN) with the primary visual cortex (V1) in anesthetized marmosets (Callithrix jacchus). The LGN sends signals to V1 along parallel visual pathways called parvocellular (P), magnocellular (M), and koniocellular (K). To better understand...

journal_title：Visual neuroscience

authors： Cheong SK,Johannes Pietersen AN

更新日期：2014-05-01 00:00:00

abstract：:Inhibitory synaptic transmission via GABA and glycine receptors plays a crucial role in shaping the excitatory response of neurons in the retina. Whole-cell recordings were obtained from ganglion cells in the intact rabbit eyecup preparation to correlate GABA- and glycine-activated currents with the presence of their ...

journal_title：Visual neuroscience

authors： Rotolo TC,Dacheux RF

更新日期：2003-05-01 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

abstract：:Acetylcholine (ACh) is one of the transmitters utilized by extra-thalamic afferents to modulate stimulus-driven neurotransmission and experience-dependent plasticity in the visual cortex. Since these processes also depend on the activation of glutamatergic receptors, cholinergic terminals may exert their effects via d...

journal_title：Visual neuroscience

authors： Aoki C,Kabak S

更新日期：1992-03-01 00:00:00

abstract：:Some visual stimuli produce a strong percept of motion, even though they fail to excite motion detectors based on Fourier energy or cross correlation. Models which suffice to explain the motion percept in these non-Fourier motion (NFM) stimuli include linear spatiotemporal filtering, followed by rectification, followe...

journal_title：Visual neuroscience

authors： Victor JD,Conte MM

更新日期：1992-08-01 00:00:00

abstract：:Although excitotoxins derived from acidic amino acids are known to damage neurons in the inner nuclear and ganglion cell layers of the retina, little is known about their effects on photoreceptors. This study examines the acute and long-term effects of excitotoxins on photoreceptors of the chick retina. The zinc-iodid...

journal_title：Visual neuroscience

authors： Sattayasai J,Zappia J,Ehrlich D

更新日期：1989-01-01 00:00:00