Retinal Projection
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Caracterização citoarquitetônica, neuroquímica e de aferência óptica do complexo parabraquial do sagui (Callithrix jacchus)
The parabrachial complex (PB) is an area of the brainstem responsible for the processing and transmission of essential physiologic information for the survival of the organisms. This region is subdivided in approximately nine subregions, considering morphology, cytoarchitectural and functional characteristic. Its neurons have an extensive network of connecti
Publicado em: 2010
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2. A Zona Incerta no sagüi (Callithrix jacchus): Análise Citoarquitetônica, Neuroquímica e Projeção Retiniana
The retinal projections in mammals usually reach, classically, three major functional systems: the primary visual system, the accessory optic system, and the circadian timing system. But the retinal projections also reach areas classically considered non-visual, one of which groups the neurons of the zona incerta (ZI), target this study. The primary visual s
Publicado em: 2008
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3. "O núcleo supraquiasmático e o folheto intergeniculado do mocó (Kerodon rupestris): Projeções retinianas e caracterização imuno-histoquímica
In this study, two circadian related centres, the suprachiasmatic nucleus (SCN) and the intergeniculate leaflet (IGL) were evaluated in respect to their cytoarchitecture, retinal afferents and chemical content of major cells and axon terminals with a tract tracer and immunohistochemical techniques in the rock cavy (Kerodon rupestris), a Brazilian caviidae ro
Publicado em: 2007
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4. Activity and the control of ganglion cell death in the rat retina.
In newborn rats each retina projects principally to the contralateral superior colliculus, but there is also a sparse projection to the whole of the ipsilateral superior colliculus. During the first 2 weeks postnatally the ipsilateral projection normally becomes restricted to the rostromedial part of the superior colliculus. The restriction of this projectio
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5. Non-linear projection of the retinal image in a wide-angle schematic eye.
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6. Suppression and retinal correspondence in intermittent exotropia.
Suppression scotomas and retinal projection (retinal correspondence) were measured in six intermittent exotropes during deviation. Measurements used red-green anaglyph stimuli presented on a black background which could be varied from 3.4 minutes of arc to 3 degrees 24'. Results showed non-suppression of all points between the fovea and the diplopia point. H
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7. Fiber-fiber interaction and tectal cues influence the development of the chicken retinotectal projection.
The development of the retinotectal projection has been studied by a new experimental approach combining antibodies against the nerve cell adhesion molecule (NCAM), and techniques for mapping neuronal pathways using rhodamine B isothiocyanate (RITC) crystals. Anti-NCAM Fab', which specifically inhibits neurite fasciculation, was injected into the eye cup of
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8. Specific projection of displaced retinal ganglion cells upon the accessory optic system in the pigeon (Columbia livia).
In the pigeon, the nucleus of the basal optic root, a component of the accessory optic system, projects directly upon the vestibulo-cerebellum. This nucleus receives a prominent projection composed of large-diameter retinal axons, known as the basal optic root. The cells of origin of this tract were identified using horseradish peroxidase (donor:hydrogen-per
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9. The retinal ganglion cell mosaic defines orientation columns in striate cortex.
A computer simulation was used to demonstrate that the tangential organization of orientation columns is a natural consequence of the orderly projection of the mosaic of retinal ganglion cells onto the visual cortex. Parameters of the simulation were taken from published anatomical and electrophysiological data, and the resulting columnar organization of the
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10. Pseudorabies Virus Membrane Proteins gI and gE Facilitate Anterograde Spread of Infection in Projection- Specific Neurons in the Rat
The membrane proteins gI and gE of Pseudorabies virus (PRV) are required for viral invasion and spread through some neural pathways of the rodent central nervous system. Following infection of the rat retina with wild-type PRV, virus replicates in retinal ganglion neurons and anterogradely spreads to infect all visual centers in the brain. By contrast, gI an
American Society for Microbiology.
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11. Neonatal suprachiasmatic nucleus ablation: absence of functional and morphological plasticity.
Neonatal ablation of the suprachiasmatic nucleus in the rat has two important consequences. First, the direct projection from the retina to the suprachiasmatic nucleus fails to develop and no other retinal projection to any hypothalamic nucleus is formed. Second, circadian rhythms in drinking and spontaneous locomotor activity to not appear in these rats whe
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12. Axon substitution in the reorganization of developing neural connections.
Insights into the mechanisms of normal and pathological neural development may be gained by studying the reorganization of developing neural connections, caused experimentally or by disease. Many reorganized connections are assumed to arise by the anomalous stabilization of transient connections that occur during normal development. We report that, although