Abstract:
:The size, pattern of terminal arborizations, and laminar specificity of individual retinogeniculate axons were studied in the macaque following injections of HRP into the optic tract. Axons that terminated in the magnocellular layers had significantly larger fiber diameters and wider terminal fields than those that terminated in the parvocellular layers. Terminal fields of magnocellular fibers spanned most of the width of their target layer, whereas those of parvocellular fibers were restricted to approximately one-half the width of their target layers; almost all terminal fields were oriented along lines of projection. All of the optic tract fibers that we examined terminated in only one layer of the lateral geniculate nucleus (GL), including a population of fine caliber fibers that project to the intercalated layers, and none had collateral projections outside the GL. The results suggest that each layer--magnocellular, parvocellular, and intercalated--receives projections from a morphologically distinct population of optic tract fibers.
journal_name
Vis Neuroscijournal_title
Visual neuroscienceauthors
Conley M,Fitzpatrick Ddoi
10.1017/s0952523800001206subject
Has Abstractpub_date
1989-01-01 00:00:00pages
287-96issue
3eissn
0952-5238issn
1469-8714pii
S0952523800001206journal_volume
2pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1017/s0952523800005435
更新日期:1993-07-01 00:00:00
abstract::We have developed two brain slice preparations for studying tectofugal visual pathways in the chick: conventional, 400-microns slices ("thin slices"), and "thick slices" which encompass the rostral pole of the optic tectum and the contralateral optic nerve. Stimulation was delivered with a bipolar electrode positioned...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800008622
更新日期:1996-07-01 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
pub_type: 杂志文章
doi:10.1017/s095252380001141x
更新日期:1997-03-01 00:00:00
abstract::The responses of neurons in primary visual cortex (V1) are suppressed by stimuli presented in the region surrounding the receptive field. There is debate as to whether this surround suppression is due to intracortical inhibition, is inherited from lateral geniculate nucleus (LGN), or is due to a combination of these f...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523807070563
更新日期:2007-09-01 00:00:00
abstract::The Food and Drug Administration (FDA) is responsible for determining whether medical device manufacturers have provided reasonable assurance, based on valid scientific evidence, that new devices are safe and effective for their intended use before they are introduced into the U.S. market. Most existing color vision d...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523804213256
更新日期:2004-05-01 00:00:00
abstract::Experiments on the lateral geniculate nucleus (LGN) of the cat based on 14C 2-deoxyglucose (2-DG) autoradiography and intraocular injections of 2-amino-4-phosphonobutyric acid (APB) provided evidence for gradients of metabolic activity in the ON and OFF pathways in layer A, but only very weakly, if at all, in layer A1...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800010130
更新日期:1993-11-01 00:00:00
abstract::The laminar and tangential organization of visual callosal projections of areas 17 and 18 were investigated in the adult ferret, using histochemical methods to visualize axonally transported horseradish peroxidase (HRP). Normal adult ferrets were given injections of HRP throughout one visual cortex or had gelfoam soak...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800006398
更新日期:1992-07-01 00:00:00
abstract::We studied the development of multibank rod retinae by monitoring the size-related addition of new layers of rod inner and outer segments in four species of deep-sea fishes and found two different growth paradigms. In the mesopelagic Chauliodus sloani, new banks of rod inner and outer segments are added as long as the...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s095252389815304x
更新日期:1998-05-01 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
pub_type: 杂志文章
doi:10.1017/S0952523807070113
更新日期:2007-01-01 00:00:00
abstract::Effects of ATP on the activity of cGMP-gated channels from carp cone photoreceptors were studied. In 29% of the patches examined (N = 45), ATP (1 mM) enhanced a current evoked by cGMP (20 microM, up to about 100%), in 33%. ATP suppressed it by up to about 90%, and in the remaining 38%, ATP had no effect. ATP showed si...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800012578
更新日期:1997-07-01 00:00:00
abstract::Recurrent projections comprise a universal feature of cerebral organization. Here, we show that the corticofugal projections from the striate cortex (VI) to the lateral geniculate nucleus (LGN) robustly and multiplicatively enhance the responses of parvocellular neurons, stimulated by gratings restricted to the classi...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800174012
更新日期:2000-07-01 00:00:00
abstract::Synaptically localized calcium channels shape the timecourse of synaptic release, are a prominent site for neuromodulation, and have been implicated in genetic disease. In retina, it is well established that L-type calcium channels play a major role in mediating release of glutamate from the photoreceptors and bipolar...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523804214055
更新日期:2004-07-01 00:00:00
abstract::Activity at night in efferent nerve fibers from a central circadian clock produces changes in photoreceptor function in the lateral compound eye of Limulus: the response to light is increased; membrane potential fluctuations (bumps) occurring in the dark are suppressed; and the duration of bumps occurring both in the ...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800004405
更新日期:1989-08-01 00:00:00
abstract::Color vision impairment was examined in patients with type 2 diabetes mellitus (DM2) without retinopathy. We assessed the type and degree of distortions of individual color spaces. DM2 patients (n = 32), and age-matched controls (n = 20) were tested using the Farnsworth D-15 and the Lanthony D-15d tests. In addition, ...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523806233546
更新日期:2006-05-01 00:00:00
abstract::Tritiated neurotransmitter candidates were unilaterally injected in visual cortical regions with abundant corpus callosum connections. D-aspartate (Asp) or gamma-aminobutyric acid (GABA) was injected along the area 17/18 border in cat, and the area 17/18a and 17/18b borders in rat. Retrograde Asp label was found contr...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800004351
更新日期:1989-01-01 00:00:00
abstract::The presence of opioid receptors has been confirmed by a variety of techniques in vertebrate retinas including those of mammals; however, in most reports, the location of these receptors has been limited to retinal regions rather than specific cell types. Concurrently, our knowledge of the physiological functions of o...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523812000156
更新日期:2012-05-01 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
pub_type: 杂志文章
doi:10.1017/S0952523808080152
更新日期:2008-05-01 00:00:00
abstract::We recorded the responses of neurons from the cat's lateral geniculate nucleus to drifting sine-wave grating stimuli both before and during electrical stimulation of the parabrachial region of the midbrain. The parabrachial region provides a mostly cholinergic input to the lateral geniculate nucleus, and our goal was ...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800005332
更新日期:1993-07-01 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
pub_type: 杂志文章
doi:10.1017/s0952523800011652
更新日期:1997-09-01 00:00:00
abstract::Receptive field organization of cone-driven bipolar cells was investigated by intracellular recording in the intact light-adapted retina of the tiger salamander (Ambystoma tigrinum). Centered spots and concentric annuli of optimum dimensions were used to selectively stimulate the receptive field center and surround wi...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523811000071
更新日期:2011-05-01 00:00:00
abstract::Intrinsic interneurons within the dorsal lateral geniculate nucleus (dLGN) provide a feed-forward inhibitory pathway for afferent visual information originating from the retina. These interneurons are unique because in addition to traditional axodendritic output onto thalamocortical neurons, these interneurons have pr...
journal_title:Visual neuroscience
pub_type: 杂志文章,评审
doi:10.1017/S0952523817000141
更新日期:2017-01-01 00:00:00
abstract::R1-6 dominated electroretinographic (ERG) spectral sensitivities were determined as a function of days posteclosion from carotenoid deprived and replaced white-eyed Drosophila. The sensitivity of flies deprived from egg to adult waxed (about 1.5 log units by day 3), and then waned gradually from 3-11 days (over 2 log ...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800011263
更新日期:1992-11-01 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
pub_type: 杂志文章
doi:10.1017/s0952523800005496
更新日期:1989-10-01 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
pub_type: 杂志文章
doi:10.1017/s0952523800006441
更新日期:1992-01-01 00:00:00
abstract::The development of spatial vision is relatively well documented in human and nonhuman primates. However, little is known about the development of sensitivity to motion. We measured the development of sensitivity to direction of motion, and the relationship between motion and contrast sensitivity in macaque monkeys as ...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/S0952523804216054
更新日期:2004-11-01 00:00:00
abstract::The retinae of insectivores have been rarely studied, and their photoreceptor arrangements and expression patterns of visual pigments are largely unknown. We have determined the presence and distribution of cones in three species of shrews (common shrew Sorex araneus, greater white-toothed shrew Crocidura russula, dar...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s0952523800176138
更新日期:2000-11-01 00:00:00
abstract::Much of what is currently known about the visual response of retinal bipolar cells is based on studies of rod-dominant responses to flashes in the dark in the isolated retina. This minireview summarizes quantitative findings on contrast processing in the intact light-adapted retina based on intracellular recording fro...
journal_title:Visual neuroscience
pub_type: 杂志文章,评审
doi:10.1017/S0952523810000313
更新日期:2011-01-01 00:00:00
abstract::Although the neural location of the plaid motion coherence process is not precisely known, the middle temporal (MT) cortical area has been proposed as a likely candidate. This claim rests largely on the neurophysiological findings showing that in response to plaid stimuli, a subgroup of cells in area MT responds to th...
journal_title:Visual neuroscience
pub_type: 杂志文章
doi:10.1017/s095252380000852x
更新日期:1996-07-01 00:00:00
abstract::Amacrine cells are a morphologically and functionally diverse group of inhibitory interneurons. Morphologically, they have been divided into approximately 30 types. Although this diversity is probably important to the fine structure and function of the retinal circuit, the amacrine cells have been more generally divid...
journal_title:Visual neuroscience
pub_type: 杂志文章,评审
doi:10.1017/S0952523812000028
更新日期:2012-01-01 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
pub_type: 杂志文章
doi:10.1017/s0952523898156158
更新日期:1998-11-01 00:00:00