Alexandre Szabo

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BACKGROUND To investigate, based on the parallel information processing model and arousal hypothesis, whether musical tempo and its manipulation during exercise affect the maximal workload (watts) achieved during progressive cycling. METHODS DESIGN repeated measures experiment that involved one control and four treatment conditions. SETTINGS the(More)
Repeated administration of amphetamine derivatives is reported to induce neurotoxicity in rat brain. Methamphetamine (MA) impairs the function of both the dopaminergic and serotonergic systems, 3,4-methylenedioxymethamphetamine (MDMA, Ecstasy) affects primarily the latter system. The neurochemical deficits induced by these amphetamines have been described(More)
OBJECTIVES To determine in this pilot study whether aerobic exercise affects phenylacetic acid concentration in the urine. METHODS Twenty healthy men provided 24 hour urine samples on two consecutive days for the determination of phenylacetic acid levels. Before and during day 1, subjects refrained from physical activity; on day 2 subjects ran on a(More)
The fundamental premise of Natural Computing is that nature computes, and that computing capability has to be understood, modeled, abstracted and used for different objectives and in different contexts. Therefore, it is necessary to propose a new language capable of describing and allowing the comprehension of natural systems as a union of computing(More)
Recent evidence raised the possibility that dopaminergic mechanisms in the neostriatum play an important role in categorization. In this study, we examined the electrophysiological correlates of natural scene categorization in Parkinson's disease (PD), which is characterized by the depletion of dopamine in the neostriatum. Event-related potentials (ERPs)(More)
BACKGROUND Manoscan(™) is one of the commonly used high-resolution manometry (HRM) systems with declared measurement accuracy of 1-2 mmHg. However, the accuracy of pressure measurements is limited by development of pressure drift (PD) throughout recording. To date, there has been no systematic investigation to identify the factors contributing to PD. The(More)