Sensory Neglect
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Orientação da atenção em pacientes portadores de tumor do lobo parietal / Orientation of attention in patients with parietal lobe tumor
Atenção consiste em conjunto de processos que leva à seleção ou priorização no processamento de certas categorias de informação, em detrimento de outras, possibilitando um processamento mais eficiente do que seria possível caso o sistema nervoso processasse os estímulos presentes no ambiente simultaneamente. A atenção participa da maioria das fu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2012
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2. Motor neglect.
Motor neglect is characterised by an underutilisation of one side, without defects of strength, reflexes or sensibility. Twenty cases of frontal, parietal and thalamic lesions causing motor neglect, but all without sensory neglect, are reported. It is proposed that the cerebral structures involved in motor neglect are the same as those for sensory neglect an
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3. Dissociated perceptual-sensory and exploratory-motor neglect.
A patient with a right sided parietal lobe infarction manifested left sided sensory extinction in the visual, auditory, and tactile modalities but had only mild exploratory-motor neglect. In contrast, another patient with a right frontal haemorrhage demonstrated only left sided exploratory-motor hemispatial neglect. Tasks that combined perceptual and explora
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4. Do visual field deficits exacerbate visuo-spatial neglect?
A significant association between visual field deficits (VFD) and visuo-spatial neglect is well established, although cases of double-dissociation between the two conditions are not uncommon. It has been argued that VFD typically exacerbates the behavioural manifestations of neglect. We examined a series of 51 patients with unilateral right-hemisphere stroke
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5. Proximal intentional neglect: a case study.
Although neglect has been demonstrated in the horizontal, vertical, and radial planes of space and has been attributed to sensory-attentional, motor-intentional, and representational deficits, motor intentional neglect in the radial plane has not been previously described. A patient who had a right parietal infarct was tested with a modified cancellation tas
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6. Somnolence, akinesia, and sensory activation of motivated behavior in the lateral hypothalamic syndrome.
After lateral hypothalamic damage in rats, somnolence, akinesia, and sensory neglect combine to produce complete aphagia. Only simple automatisms (such as grooming, chewing, licking) are present, but intense stimuli can activate more complex actions (walking, orientation, swimming). In the anorexic stage, tactile stimuli dominate in steering locomotion and "
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7. Optokinetic stimulation influences the disturbed perception of body orientation in spatial neglect.
The effect of optokinetic stimulation on the disturbed perception of body orientation in three patients with right brain damage and spatial neglect was examined. The patients were asked to direct a laser point to the position which they felt lay exactly "straight ahead" of their bodies' orientation. Without stimulation they localised the body's sagittal midp
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8. Anatomical correlates of visual and tactile extinction in humans: a clinical CT scan study.
The anatomical correlates of tactile and visual extinction with double simultaneous stimulation were investigated in a series of 159 patients with right brain damage caused by stroke. Forty six patients showed extinction (22 tactile, 14 visual, 10 tactile and visual). Over 50% of the patients with extinction had deep lesions, which were found in about 25% of
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9. Persistent denial of handicap after infarction of the right basal ganglia: a case study.
A case is reported of persistent denial of handicap following stroke. Hemiplegia was due to infarction involving only sub-cortical structures, and there was no associated visual or sensory neglect or inattention, and no evidence of dementia.
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10. Qualitative analysis of unilateral spatial neglect in relation to laterality of cerebral lesions
Two unselected groups of patients, affected by a mono-hemispheric cerebral lesion, were studied in two seperate services by means of various tasks of copying drawings, in order to check the hypothesis of a qualitative difference between unilateral spatial neglect (USN) of right and left brain-damaged patients. In both experimental groups drawing asymmetries
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11. Three arms: a case study of supernumerary phantom limb after right hemisphere stroke.
A case of supernumerary phantom limb is described after a haematoma within the right basal ganglia. The phantom, which persisted for many months, occurred in the context of severe left hemiplegia, sensory loss, hemianopia, and neglect. The subjective reality of this "third arm" caused the patient considerable distress, which was not ameliorated by his attemp
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12. Acute hemiconcern: a right anterior parietotemporal syndrome.
Three patients developed a striking visual and motor behaviour in the acute phase of a stroke involving the territory of the right anterior parietal artery (postcentral gyrus, parts or upper and middle temporal gyri, anterior part of inferior parietal gyrus, and supramarginal gyrus). The patients concentrated on the left side of their bodies, looking at it f