Oculomotor System
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Evaluation of vestibular and oculomotor functions in individuals with dizziness after stroke
RESUMO Alterações no equilíbrio postural são consequências frequentes no acidente vascular cerebral (AVC). O objetivo deste estudo foi investigar os sintomas e as funções vestibular e oculomotora de sujeitos com tontura após AVC isquêmico e hemorrágico, comparando seus resultados. Métodos: Foram avaliados 50 sujeitos com tontura após AVC, por me
Arq. Neuro-Psiquiatr.. Publicado em: 2019-01
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2. The relationship between the stomatognathic system and body posture
In recent years, many researchers have investigated the various factors that can influence body posture: mood states, anxiety, head and neck positions, oral functions (respiration, swallowing), oculomotor and visual systems, and the inner ear. Recent studies indicate a role for trigeminal afferents on body posture, but this has not yet been demonstrated conc
Clinics. Publicado em: 2009-01
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3. Estudo longitudinal de pacientes com doença de Machado-Joseph : correlação clinica e de neuroimagem / Longitudinal study in patients with Machado-Joseph disease : clinical and neuroimaging correlation
Machado-Joseph disease or spinocerebellar ataxia type 3 (SCA3/MJD) is an autosomal dominant ataxia resulting from an expansion of a CAG triplet at the MDJ1 gene located on chromosome 14q. Clinically, it is characterized by cerebellar ataxia, peripheral neuropathy, pyramidal and extrapyramidal syndrome and ophthalmoplegia. The age of onset is variable and inv
Publicado em: 2009
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4. Variabilidade da atividades cerebral em resposta a estímulos vestibular e ocolomotor avaliada por fMRI / Variability of cerebral activity in response to vestibular and oculomotor stimuli evaluated by fMRI
Assessing inter-variability of functional activations is of practical importance in the use of functional magnetic resonance imaging (fMRI) in clinical context. The main objective of this study is to analyze the variability of cerebral activation of the vestibular and oculomotor systems through an optokinetic horizontal, a pursuit and saccadic eye movement s
Publicado em: 2005
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5. Oculomotor dysfunction in patients with syphilis.
Four patients with syphilis or, in two instances, possibly some other treponematosis, underwent oculomotor and audiological tests. The oculomotor test result was abnormal in all four patients. Three had abnormal smooth pursuit eye movements and two of them had hypometric voluntary horizontal saccades, which indicate that the central nervous system (CNS) was
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6. THE OCULOMOTOR SYSTEM+BRAIN FUNCTIONS
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7. Differential effect of injections of kainic acid into the prepositus and the vestibular nuclei of the cat.
1. In order adequately to control eye movements, oculomotoneurones have to be supplied with both an eye-velocity signal and an eye-position signal. However, all the command signals of the oculomotor system are velocity signals. Nowadays, there is general agreement about the existence of a brainstem network that would convert velocity command-signals into an
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8. Neuro-ophthalmic pathological correlations in primary reticulum cell sarcoma of the nervous system
Two cases of primary reticulum cell sarcoma of the nervous system are presented because of their unusual clinicopathological correlations. Consecutive pupil-sparing third nerve paralysis was associated with tumour infiltrating the diencephalon and mesencephalon and the fascicular portions of both oculomotor nerves in the first case. Concomitant sympathetic i
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9. Frontoparietal cortical networks for directing attention and the eye to visual locations: Identical, independent, or overlapping neural systems?
Functional anatomical and single-unit recording studies indicate that a set of neural signals in parietal and frontal cortex mediates the covert allocation of attention to visual locations, as originally proposed by psychological studies. This frontoparietal network is the source of a location bias that interacts with extrastriate regions of the ventral
The National Academy of Sciences.
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10. Plasticity and tuning of the time course of analog persistent firing in a neural integrator
In a companion paper, we reported that the goldfish oculomotor neural integrator could be trained to instability or leak by rotating the visual surround with a velocity proportional to +/- horizontal eye position, respectively. Here we analyze changes in the firing rate behavior of neurons in area I in the caudal brainstem, a central component of the oculomo
National Academy of Sciences.
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11. Dentato-rubro-pallido-luysian atrophy: a clinico-pathological study.
Clinical and neuropathological descriptions are given of four cases of an uncommon disease, characterised by simultaneous degeneration of the dentato-rubral and pallido-luysian systems. These four are compared with sixteen previously described cases, and the group as a whole is compared and contrasted with other multisystem degenerations, such as olivo-ponto
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12. Pathways of the early propagation of virulent and avirulent rabies strains from the eye to the brain.
Penetration of the central nervous system of the adult rat by the CVS strain of rabies virus and its two avirulent derivatives Av01 and Av02 has been studied by inoculation of the virus into the anterior chamber of the eye. The primary sites of penetration of CVS were (i) the intraocular parasympathetic oculomotor fibers, (ii) the retinopetal fibers of prete