Felipe Machado

Learn More
OBJECTIVE To show the results of a device that generates automated olfactory stimuli suitable for functional magnetic resonance imaging (fMRI) experiments. MATERIAL AND METHODS Ten normal volunteers, 5 women and 5 men, were studied. The system allows the programming of several sequences, providing the capability to synchronise the onset of odour(More)
In this work, a device for generating automated olfactory stimuli in functional magnetic resonance imaging (fMRI) studies is described. The novel issues of our design are: synchronization between the acquisition and the olfactory task, automated control of experimental parameters (odorants sequences, frequency, time and concentration of stimuli). Finally,(More)
Virtual worlds have recently gained wide recognition as an important field of study in Computer Science. In this work we present an analysis of the mobility and interactions among characters in World of Warcraft (WoW) and Second Life based on the contact opportunities extracted from actual user data in each of those domains. We analyze character contacts in(More)
BACKGROUND There is a high global and cardiovascular mortality rate among patients who need hemodialysis. OBJECTIVE To assess global and cardiovascular mortality and to identify the risk factors in patients who undergo hemodialysis. METHODS Observational, prospective study. A total of 334 patients were studied within three years. PRIMARY OUTCOMES(More)