Research on non-pharmacological therapies (cognitive rehabilitation) in old age has been very limited, and most has not considered the effect of intervention of this type over extended periods of time. The aim of this study was to investigate a new cognitive therapy in a randomized, placebo-controlled group of elderly people over 65 years of age without cognitive deterioration or expressed AAMI...

A 79-year-old female patient presented at the hospital with osteoarthritis. Examination of the patient revealed hemoglobin level of 10.8 g/dL, RBC count of 3.45x106/μL, WBC count of 10.1x103/μL, and platelet count of 122x103/μL. Plasma levels of blood urea nitrogen, creatinine, sodium, potassium, and alanine aminotransferase were all within the normal ranges, while aspartate aminotransferase wa...

In this paper, an approach based on genetic algorithms is proposed to form groups in collaborative learning scenarios, considering the students’ personality traits as a criterion for grouping. This formation carried out two stages: first, information of students collected from psychometric instrument Big Five model; whereas, second, feeds algorithm that charge performing grouping iteratively, s...

We propose a methodological approach to build strategies for grouping scenarios as defined by the type of scenario decomposition, type of grouping, and the measures specifying scenario similarity. We evaluate these strategies in the context of stochastic network design by analyzing the behavior and performance of a new progressive hedging-based meta-heuristic for stochastic network design that ...

Multiple object tracking (MOT) is an attentional process wherein people track several moving targets among several distractors. Symmetry, an important indicator of regularity, is a general spatial pattern observed in natural and artificial scenes. According to the "laws of perceptual organization" proposed by Gestalt psychologists, regularity is a principle of perceptual grouping, such as simil...

A neural network model of visual motion perception and speed discrimination is developed to simulate data concerning the conditions under which components of moving stimuli cohere or not into a global direction of motion, as in barberpole and plaid patterns (both type 1 and type 2). The model also simulates how the perceived speed of lines moving in a prescribed direction depends on their orien...

The human visual system excels in object recognition and scene interpretation even in scenes in which some (or even all) observed objects are partially occluded or fragmented. This highly efficient capacity is facilitated by constructive processes of contour completion between inducers to yield the perception of whole objects across gaps. A fundamental problem of the process is when and how the...

Segregated objects can be sought simultaneously, i.e., mentally "re-grouped." Although the mechanisms underlying such "re-grouping" clearly differ from automatic grouping, it is unclear whether or not the end products of "re-grouping" and automatic grouping are the same. If they are, they would have similar impact on visual organization but would be in conflict. We compared the consequences of ...

Four experiments are reported, the aim of which was to explore the achromatic-colour and distance relations that determine the probability of achromatic surfaces grouping perceptually. The first two experiments were performed to test Wertheimer's conjecture that similarity and dissimilarity of achromatic colours jointly determine grouping. The results indicate that only similarity of achromatic...