Cerebral Asymmetry
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Cerebral localization of higher functions: The period between Thomas Willis and Paul Broca
RESUMO. Os debates milenares sobre a localização da mente (funções superiores) chegaram a um novo caminho quando Willis localizou uma função nervosa superior (memória) no parênquima cerebral, e supostamente, no córtex cerebral. Cerca de dois séculos depois, Broca, baseado em sólido pensamento científico, localizou uma área circunscrita da 3ª ci
Dement. neuropsychol.. Publicado em: 18/06/2019
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2. Reconhecimento de faces com filtragens de frequências espaciais altas e baixas nos hemicampos visuais direito e esquerdo / Facial recognition in high and low spatial frequency filtering in the right and in the left hemifields
This study aimed to investigate whether face recognition occurs primarily by analytic or holistic processing in the cerebral hemispheres of men and women through the study of the spatial frequency spectrum. Therefore, in Experiment I, 40 volunteers (20 women) performed two sessions. In each of, 14 faces were memorized for a recognition task and each face was
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2012
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3. Avaliação de assimetrias cerebrais funcionais por SPECT cerebral e termometria timpânica
The objective of this study was to verify the possibility of using tympanic temperature (TT) as an indicator of asymmetric cerebral activity in human patients. To achieve this objective the TT was measured in 32 patients (12 male, 20 female, aged 47.34 + 22.96) with a clinical diagnostic hipothesis of neuropsychiatric disorders who were referred to a Nuclear
Publicado em: 2008
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4. Analise de assimetria dos ventriculos laterais do cerebro humano em imagens de ressonancia magnetica / Analysis of asymmetry of the lateral ventricles of the human brain in resonance magnetic images
Equipamentos de Ressonância Magnética (RM) permitem a obtenção de seqüências de imagens digitais contendo estruturas tri-dimensionais (3D) do corpo humano. A visualização e a análise computadorizada dessas estruturas têm revolucionado a pratica médica de diversas formas. O enfoque deste trabalho é a análise dos ventrículos laterais do cérebro
Publicado em: 2008
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5. Phonoaudiological aspects of Saethre-Chotzen syndrome / Aspectos fonoaudiologicos da sindrome de Saethre-Chotzen
Saethre-Chotzen Syndrome (SCS) is characterized by craniosynostosis and several important facial alterations such as: low hair implantation at the front, asymmetry, maxillary hypoplasia, mandibular prognathism, in addition to small, dysmorphic and low-set ears. Among the ocular alterations are: blepharoptosis, strabismus, epicanthus, lachrymal duct stenosis
Publicado em: 2006
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6. Perception of facial expressions and brain lateralization. / "Percepção de expressões faciais da emoção e lateralização cerebral".
Tem sido freqüentemente discutido na literatura científica o papel que desempenha cada hemisfério cerebral no processamento da informação emocional. O estudo realizado teve por objetivo investigar o padrão de dominância hemisférica para a percepção das expressões faciais de alegria, tristeza, raiva e medo. Em dois experimentos realizados foi utili
Publicado em: 2004
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7. Heritability of lobar brain volumes in twins supports genetic models of cerebral laterality and handedness
Although the left and right human cerebral hemispheres differ both functionally and anatomically, little is known about the environmental or genetic factors that govern central nervous system asymmetry. Nevertheless, cerebral asymmetry is strongly correlated with handedness, and handedness does have a significant genetic component. To explore the relative co
The National Academy of Sciences.
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8. Cerebral blood flow after carotid occlusion and extracranial-intracranial bypass.
Eleven patients with occlusion of one internal carotid artery showed marked reduction of regional cerebral blood flow (rCBF) through the hemisphere on the affected side with high rCBF on the opposite side. Six of the patients had no surgery, during follow-up of 2 to 5 years. rCBF increased on both sides leaving a persisting asymmetry of rCBF. Five patients h
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9. A reassessment of sensory evoked potential parameters in multiple sclerosis: a discriminant analysis approach.
The sensitivity of the different parameters (absolute latency, interwave latency, latency asymmetry, amplitude) of both cervical and cerebral responses evoked by stimulation of the median nerve at the wrist was assessed in patients with multiple sclerosis by discriminant analysis. The peak latency of N13 or N20 SEP components or both was found to be more sen
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10. Detection threshold for percutaneous electrical stimuli: asymmetry with respect to handedness.
Sensory strength-duration curves were obtained using percutaneous true square-wave pulses ranging from 0.1 to 20.0 ms produced by an isolated constant current stimulator. In 119 healthy volunteers sensory thresholds were measured bilaterally by stimulating the distal phalange of the little finger. In order to examine the relationship of sensory threshold and
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11. Perfusion mapping with Tc-HMPAO in cerebral haematomas.
The cerebral distribution of HMPAO was mapped tomographically by SPECT in 20 patients with an intra cerebral haematoma. The images were assessed visually and by an analysis of an asymmetry index (AI) for various cerebral areas. Visual inspection identified the lesion in each of the 20 cases. Reduced tracer activity and abnormal AI were consistent findings. R
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12. Cognition and cerebral blood flow in lateralised parkinsonism: lack of functional lateral asymmetries.
Cognitive and cerebral blood flow (CBF) lateral asymmetries have been quantified in 23 right handed patients with lateralised idiopathic Parkinson's disease. Thirteen patients who had predominant right-sided symptoms (RPD) were compared with ten who had predominant left-sided symptoms (LPD). The patient subgroups were matched for age, education, duration of