Pathological Potentials
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. The vascular and neurogenic factors associated with erectile dysfunction in patients after pelvic fractures
ABSTRACT Erectile dysfunction (ED) is a common complication of pelvic fractures. To identify the vascular and neurogenic factors associated with ED, 120 patients admitted with ED after traumatic pelvic fracture between January 2009 and June 2013 were enrolled in this study. All patients answered the International Index of Erectile Function (IIEF-5) questionn
Int. braz j urol.. Publicado em: 2015-10
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2. Geometria, Topologia e Elasticidade: aplicações a membranas e outros sistemas bidimensionais
Geometry, topology and elasticity are found in various branchs of physics and they play important roles in the understanding of many physical phenomena. In this work, we present three diferent systems where we can see such importance. First, a quantum neutral particle, constrained to move on a conical surface, is used as a toy model to explore bound states d
Publicado em: 2009
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3. Seleção de peptídeos reconhecidos por imunoglobulinas Y anti-metacestódeo de Taenia solium por phage display
The Taenia solium metacestodes localization in humans occours mainly in the central nervous system (CNS) promoting the disease named neurocysticercosis (NC), the most frequent parasitosis in the CNS. The pathological presentation of NC differs about localization and viability of metacestodes, and host immunological response. For its diagnosis stabelishment i
Publicado em: 2009
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4. Crises paroxísticas recorrentes em ratos por inibição do transporte de glutamato durante o desenvolvimento / Genesis of recurrent epileptic paroxysmal burst in newborn rats after inhibition of glutamate transporters
It has been previously shown that cell-surface glutamate transporters efficiently control network activity in the maturing rodent brain, preventing the generation of seizures. In particular, inhibition of glutamate transporters by DL-TBOA leads to a pathological EEG pattern in freely moving rat pups. This is composed of partial seizures and recurrent short p
Publicado em: 2009
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5. Visão de cores e sensibilidade ao contraste em indivíduos com diabete melito: avaliação psicofísica e eletrofisiológica / Color vision and contrast sensitivity in subjects with diabetes mellitus : psychophysical and electrophysiological evaluation
Before the establishment of retinopathy detectable in the ophthalmologic examination, color vision and contrast sensitivity may be altered in diabetic patients. (Dean e cols., 1997; Kurtenbach e cols., 1999). The sensory deficits have been attributed to vascular alterations and to (Greenstein e cols., 2000; Lieth e cols., 2000). However, there are no definit
Publicado em: 2004
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6. Evidencias de compromiso cerebral en el estadio crónico de la enfermedad de Chagas obtenidas por medio del potencial P300 y de electroencefalografía cuantificada
It is already known the involvement of the peripheral nervous system in chronical stages of Chagas disease. Tomographic and neuropsychological evidence of brain compromise has been included recently. In order to evaluate the neurophysiological counterpart of cerebral involvement, we studied P300 evoked potential and quantified EEG (qEEG) of 35 patients (2655
Arquivos de Neuro-Psiquiatria. Publicado em: 2000-06
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7. Somatosensory conduction times and peripheral, cervical and cortical evoked potentials in patients with cervical spondylosis.
Peripheral, cervical and cortical somatosensory evoked potentials after median or ulnar nerve stimulation were recorded in 21 patients with cervical spondylosis with radiculopathy or myelopathy. The test was normal when pain and paraesthesias were the only symptoms, while pathological in radiculopathy with objective neurological signs. The results varied in
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8. Benign fibrillation potentials in normal muscle and their correlation with endplate and denervation potentials.
Fibrillation potentials in normal muscle are identical in origin with the 'spikes' in the endplate zone. The difference in shape is due to the site of the electrode. Both potential types are characterised by a high average maximal frequency and a very irregular discharge pattern. These properties distinguish them from the typical fibrillation potentials of t
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9. Abnormalities of proximal conduction in acute idiopathic polyneuritis: comparison of short latency evoked potentials and F-waves.
Motor and sensory conduction studies, F-wave latency, and the latency of evoked potentials from the brachial plexus and cervical spine in response to median nerve stimulation were examined in 17 patients with acute idiopathic polyneuropathy. Short latency evoked potentials provided a higher yield of evidence of abnormalities of proximal conduction than did t
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10. Ultralate cerebral potentials as correlates of delayed pain perception: observation in a case of neurosyphilis.
Evoked cerebral potentials were investigated in a patient with neurosyphilis, who showed the symptoms of delayed pain perception in the lower limbs: a pinprick to the legs was perceived with a latency of more than one second. After stimulation with CO2 laser radiant heat pulses, evoked cerebral potentials of upper limbs were observed in a latency range compa
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11. Characteristics of the F response: a single motor unit study.
Trains of 100 to 200 stimuli result in F discharges from less than one half of motor units of hand muscles. The maximum observed F discharge frequency was 10%. There was no relation between the surface voltage of motor unit potentials and the frequency of F discharge. The motor unit potentials of larger surface voltage were recruited at higher stimulus inten
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12. Electrocutaneous reflexes and multimodality evoked potentials in multiple sclerosis.
Electrical stimulation of the digital nerves of the index finger produces changes in the EMG signal during steady voluntary contraction of the first dorsal interosseous muscle. This electrocutaneous reflex (ECR) was studied in 90 patients classified into different categories according to diagnostic criteria for multiple sclerosis. In addition, pattern revers