Electrophysiological Neuron
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. ESTUDO DAS ALTERAÇÕES ELETROFISIOLÓGICAS DOS NEURÔNIOS DO GÂNGLIO CERVICAL SUPERIOR DE RATOS PRÉ-DIABÉTICOS / ELECTROPHYSIOLOGICAL STUDY OF THE CHANGES NEURONS OF THE RAT SUPERIOR CERVICAL GANGLIA PRE-DIABETES
Investigar as alterações eletrofisiológicas dos neurônios do gânglio cervical superior de animais pré-diabéticos torna-se extremamente relevante devido às alterações relacionadas à neuropatia diabética que ainda permanecem desconhecidas na literatura. Durante o desenvolvimento desse trabalho, ratos Wistar neonatos com idade entre 5 6 dias, foram
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2010
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2. Efeitos da estimulação elétrica do córtex motor na modulação da dor: análise comportamental e eletrofisiológica em ratos / Effects of electrical stimulation of motor cortex on pain modulation: behavior and electrophysiological study in rats.
Background. The motor function has been associated to sensory and pain attenuation, before during and shortly after the muscle activity. How ever the anatomical and functional basis of this phenomenon is not yet defined. The present study was designed to set an animal model and investigate the effect of subthreshold electrical stimulation of motor cortex (MC
Publicado em: 2007
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3. Electrophysiological observations in patients with motor neuron disease receiving a thyrotropin releasing hormone analogue (RX77368).
Twenty nine patients with motor neuron disease receiving a thyrotropin releasing hormone analogue showed acute 25-30% increase in mean corrected fibre density and mean macro EMG median amplitude and area in brachial biceps muscle. The data are consistent with a direct or indirect action of the drug on anterior horn cells.
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4. Stimulation of motor tracts in motor neuron disease.
The muscle responses evoked by cortical and cervical stimulation in 11 patients with motor neuron disease were studied. The muscle potential in the abductor pollicis brevis, evoked by median nerve stimulation and the somatosensory potential evoked by wrist stimulation were also studied. In eight of 11 patients there was absence or increased central delay of
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5. Motor neuron disease presenting as acute respiratory failure: a clinical and pathological study.
Respiratory failure is rarely a presenting symptom of motor neuron disease. Seven patients with motor neuron disease who presented with acute respiratory failure of unknown cause and required mechanical ventilation were studied. They all had symptoms and signs suggestive of diaphragmatic weakness. Respiratory involvement seemed disproportionately severe, as
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6. Formation of cholinergic synapses between dissociated sympathetic neurons and skeletal myotubes of the rat in cell culture.
Sympathetic principal neurons, dissociated from superior cervical ganglia of newborn rats, were plated into cultures containing rat skeletal myotubes formed from previously plated primary myoblasts. Electrophysiological evidence is presented that the neurons developed cholinergic synapses with the myotubes. In addition, the neurons developed cholinergic syna
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7. Postradiation lower motor neuron syndrome presenting as monomelic amyotrophy.
Monomelic amyotrophy developed 16 months, nine and 12 years after irradiation of the lumbosacral spinal cord for seminoma in one patient and for Hodgkin's disease in two others. In two patients, involvement was clinically limited to one leg, with a subacute course followed by plateau in the first case and with progressive worsening in the second one. In the
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8. Antagonism of phencyclidine action by metaphit in rat cerebellar Purkinje neurons: an electrophysiological study.
Metaphit (1-[1-(3-isothiocyanatophenyl)-cyclohexyl]piperidine), a derivative of the psychotomimetic drug phencyclidine (PCP), is postulated to bind irreversibly to PCP receptors. We examined here the electrophysiological interactions of metaphit with PCP in rat cerebellar cortex, since a specific effect of PCP on cerebellar neuronal circuitry has been shown.
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9. Electrophysiological signs of arteriovenous malformations of the spinal cord.
A characteristic pattern of electrophysiological changes was found in 24 patients with confirmed spinal cord arteriovenous malformations (AVMs). The AVMs were limited to the thoracic cord in seven, involved the conus and the cauda equina in 10, and involved all levels in six. Of the patients, 88% had at least one definite electrophysiological abnormality: ne
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10. A neurotransmitter transporter encoded by the Drosophila inebriated gene
Behavioral and electrophysiological studies on mutants defective in the Drosophila inebriated (ine) gene demonstrated increased excitability of the motor neuron. In this paper, we describe the cloning and sequence analysis of ine. Mutations in ine were localized on cloned DNA by restriction mapping and restriction fragment length polymorphism (RFLP) ma
The National Academy of Sciences of the USA.
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11. Early prognosis in coma after cardiac arrest: a prospective clinical, electrophysiological, and biochemical study of 60 patients.
BACKGROUND: The univariate study of clinical, electrophysiological, or biochemical variables has been shown to predict the outcome in postanoxic coma in about 50% of patients for each type of variable. Previous studies did not, however, consider the prognostic accuracy of a multivariate approach. METHODS: Sixty patients in coma for more than six hours after
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12. Classification of fusiform neocortical interneurons based on unsupervised clustering
A classification of fusiform neocortical interneurons (n = 60) was performed with an unsupervised cluster analysis based on the comparison of multiple electrophysiological and molecular parameters studied by patch-clamp and single-cell multiplex reverse transcription–PCR in rat neocortical acute slices. The multiplex reverse transcription–PCR protocol wa
The National Academy of Sciences.