Visual Spatial Ability
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. The orientation and mobility of visual impaired people in bus and subway networks in Brazil
Resumo Orientação espacial depende tanto da informação contida no ambiente quanto da capacidade do indivíduo em perceber e lidar com essa informação. Para poder entender um sistema de transporte público urbano e mover-se de forma independente de um lugar para outro, esse serviço deve fornecer informações acessíveis aos usuários, para que esses p
Ambient. constr.. Publicado em: 2019-03
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2. Effect of contrast and gaps between Vernier stimulus elements on sweep visual evoked potential measurements of human cortical Vernier responses
The present paper focuses on a classic hyperacuity, Vernier acuity-the ability to discriminate breaks in the collinearity of lines or edges on the order of only arcseconds of visual angle. We measured steady-state sweep visual evoked potentials (sVEPs) in response to 6 Hz periodic breaks in collinearity (Vernier offsets) in horizontal squarewave gratings. Ve
Psychol. Neurosci.. Publicado em: 2013
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3. Ferramenta de auxílio no processo ensino-aprendizagem: eficácia da utilização de kit educacional no primeiro ano do ensino médio na disciplina de química
Uma das dificuldades encontradas no ensino da Química é o estabelecimento de relações entre representações do nível microscópico e as do macroscópico na exploração de um conceito. Estudos anteriores mostraram que a utilização de ferramentas de visualização computacional ou física resulta em aprendizado mais efetivo de conceitos. Acredita-se q
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2011
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4. Reconhecimento dos conceitos de forma, cor, tamanho e posição em 10 crianças com Síndrome de Rett
Children with Rett Syndrome (RS) are supposed to present progressive regression of psychomotor development and speech abilities as well as spontaneous hand movement loss, resulting in severe difficulties for their communication. Several studies have been reporting that RS girls use the eyes with intentional purpose for communicating or expressing desires, an
Publicado em: 2008
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5. O componente espacial da habilidade matematica de alunos do ensino medio e as relações com o desempenho escolar e as atitudes em relação a matematica e a geometria
In considering the influence of cognitive and affective factors in academic achievement of geometry, the objectives of this work were to analyze the spatial component of mathematical ability and to verify the existence of relations among this component, the spatial sense, the attitudes toward Mathematics and Geometry and the academic performance. The subject
Publicado em: 2005
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6. Critical bands in cat spatial vision.
1. The ability of cats to detect sinusoidal grating patterns superimposed on one-dimensional visual noise was assessed using behavioural methods. 2. The magnitude of elevation in contrast threshold due to noise increased monotonically within limits with increasing noise contrast. 3. Visual noise was filtered using various techniques (band-reject, low-pass, h
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7. Landmark Discrimination Learning in the Dog
Allocentric spatial memory was studied in dogs of varying ages and sources using a landmark discrimination task. The primary goal of this study was to develop a protocol to test landmark discrimination learning in the dog. Using a modified version of a landmark test developed for use in monkeys, we successfully trained dogs to make a spatial discrimination o
Cold Spring Harbor Laboratory Press.
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8. Visual performance in behaving cats after prenatal unilateral enucleation.
Prenatal unilateral enucleation in mammals causes an extensive anatomical reorganization of visual pathways. The remaining eye innervates the entire extent of visual subcortical and cortical areas. Electrophysiological recordings have shown that the retino-geniculate connections are retinotopically organized and geniculate neurones have normal receptive fiel
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9. Topographic amnesia: spatial memory disorder, perceptual dysfunction, or category specific semantic memory impairment?
A 60 year old patient, SE, who presented with a severe difficulty in finding his way around previously familiar environments and a mild prosopagnosia is described. SE had herpes simplex encephalitis resulting in selective right temporal lobe damage. He showed normal spatial learning, but was severely imparied in his ability to recognise pictures of buildings
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10. Perceptual asymmetry in texture perception.
A fundamental property of human visual perception is our ability to distinguish between textures. A concerted effort has been made to account for texture segregation in terms of linear spatial filter models and their nonlinear extensions. However, for certain texture pairs the ease of discrimination changes when the role of figure and ground are reversed. Th
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11. Visual resolution of macaque retinal ganglion cells.
1. The visual resolving ability of different types of macaque retinal ganglion cells was estimated at different retinal eccentricities, by measuring the amplitude of modulated responses to black-white gratings of spatial frequencies near the resolution limit for each cell. 2. The resolving ability of tonic, spectrally opponent ganglion cells was usually simi
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12. Deficits in human visual spatial attention following thalamic lesions.
There has been speculation concerning the role that thalamic nuclei play in directing attention to locations in visual space [Crick, F. (1984) Proc. Natl. Acad. Sci. USA 81, 4586-4590]. We measured covert shifts of visual attention in three patients with unilateral thalamic hemorrhages shortly after the lesion and after a 6-month recovery period. The experim