José Antonio Gonzalez da Silva

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The question of how perceived extents are related to the corresponding physical extents is a very old question that has not been satisfactorily answered. The common model is that perceived extent is proportional to the product of image size and perceived distance. We describe an experiment that shows that perceived extents are substantially larger than this(More)
Performance analysis is of fundamental importance to understand the factors underlying participation in top-level sports. Recently, an increased importance has been given to the preservation of the situation's ecology, thus attempting the comprehension of game patterns through the establishment of relationships between variables of several orders. The(More)
Visual angles are defined as the angle between line of sight up to the mean point of a relative distance and the relative distance itself. In one experiment, we examined the functional aspect of visual angle in relative distance perception using two different layouts composed by 14 stakes, one of them with its center 23 m away from the observation point,(More)
There has been a strong demand for oat genotypes that contain caryopsis with high chemical quality which can suit the different market niches. Therefore, the objectives of this study were to assess the general (GCA) and specific combining ability (SCA) of white oat cultivars through diallelic crosses providing information about the genetic effects on(More)
Using two component subprocesses of spatial location, perceptual and imaginal, we aimed to test if endpoints of exocentric intervals are two successive egocentric locations. Observers open-loop walked toward endpoints of exocentric intervals and to an egocentric point that is coincident with the last endpoint of the exocentric interval. The targets varied(More)
Despite its phenomenal salience, the intensity of emotions remains a neglected issue of emotion research. The very notion has long been shown subtle and elusive, never precisely matched by physiological arousal or, on the subjective side, by the activation dimension so common among emotion space models. This paper argues in favor of reframing the whole(More)
The present study evaluated the performance of congenitally blind people at recognizing two-dimensional picture by touch, after a 45 hour training. Totally blind individuals served as observers in a haptically recognition task, both, before and after being trained at naming two-dimensional raised-line drawings. Statistical analysis showed a significant(More)
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