Jesus Gustavo Vazquez Figueroa

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Previous investigations have shown that the response of spatial-frequency-specific channels in the human visual system is differentially affected by adaptation to gratings of distinct spatial frequencies and/or orientations. A study is reported of the effects of adaptation to vertical or horizontal gratings of a high or a low spatial frequency on the extent(More)
Two experiments on visual letter-matching have been widely cited in the literature as Indicating a role of acoustic codes in such tasks. Posner and Mitchell (1967) concluded that a visual code is sufficient to compare two identical letters (e.g.. AA), whereas a slower forming acoustic code is required to compare nonidentical letters, whether with the same(More)
A 56-year-old woman with a mass on the aortic valve as seen on echocardiogram underwent pre-operative contrast-enhanced cardiac computed tomography prior to removal. The mass was confirmed to be a papillary fibroelastoma histologically. Spatial co-registration between the contrast-enhanced CT cross-sectional images of the mass and the Movat's pentachrome(More)
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