It is currently assumed that exposure to an artificial blue-enriched light enhances human alertness and task performance, but recent research has suggested that behavioural effects are influenced by the basal state of arousal. Here we tested whether the effect of blue-enriched lighting on vigilance performance depends on participants’ arousal level. Twenty-four participants completed four sessions (blue-enriched vs. dim light x low vs. high arousal) at 10 pm on four consecutive days, following a repeated-measures design. Participants’ arousal was manipulated parametrically through (...) the execution of a cycling task at two intensities (low vs. moderate), and was checked by monitoring their heart rate. On each session, distal and proximal skin temperatures were recorded as a neuroergonomic index of vigilance, while participants performed a 20-min psychomotor vigilance task (PVT) under either blue-enriched light or dim light conditions. The Positive and Negative Affect Schedule (PANAS), Karolinska Sleepiness Scale (KSS) and Borg Rating of Perceived Exertion Scale (RPE) were used to measure subjective psychological state. The results showed that the exercise-induced manipulation of arousal produced robust alerting effects in most measures, while the lighting manipulation only attenuated subjective sleepiness and enhanced positive affect, but it did not influence behaviour or physiology. Acute exposure to a blue-enriched light was practically ineffective when the arousal level was over baseline. The present research favoured the use of acute physical exercise over acute exposure to blue-enriched lighting in order to boost humans’ alertness when necessary, as in work settings where maintaining optimal levels of attention is difficult (shift work, night-work, vigilance tasks) and necessary to prevent human error and accidents. (shrink)

There may be few works of philosophy that accurately integrate dialectical and rhetorical aspects such as Contra Academicos, to the point that it becomes difficult at times to separate these two discursive techniques. This, despite the tension that Augustine points out between, on the one hand, his impulse to move away from the vanity of the rhetoric he learned in his youth, and, on the other, its convenience in achieving the persuasion of his audience. Regarding rhetoric, there are two moments (...) in which it is clearly recognizable in the work: 1) Direct references to “persuasion” and to technical elements specific to oratory; and 2) The implementation of a rhetorical discourse, in this case necessary and not accidental, to complete the argument. In this article, I analyze both aspects systematically, in order to investigate the reasons why this Augustinian dialogue invokes, to achieve its objective, both dialectic and rhetoric. (shrink)

Del anormal al sujeto ce la resistencia -- Subjetividad y resistencia -- Vida cotidiana del habitante de calle -- Reflexión sobre el concepto de irrealidad como forma de resistencia y ejercicio de la libertad en la experiencia cinematográfica -- Poesía y resistencia.

This article addresses the importance of passions and their component of pain and pleasure in Aristotle's ethical reflection. Then, and assuming these antecedents, it analyzes anger and calm from the point of view of Rhetoric, to finally deal with the other painful passions described in this work in a broader way, in search of common aspects. He argues that Rhetoric provides important tools not only to provoke or mitigate a passion, but also to be able to redirect it in a (...) way that is useful for a good speaker in the face of citizen improvement. This implies conceiving the passions, which have an eminently individual character at their origin, also as shared by a community. From the analysis of these texts and the consequences that derive from the study of painful passions, it is possible to extract valuable elements that allow us to enrich our understanding of those aspects that influence community and political life, especially in consideration of the forefront that such passions are acquiring in difficult historical conditions, as it occurs in practice with the current pandemic situation that we have had to face globally. (shrink)

A partir da leitura de Os sofrimentos do jovem Werther, com base nos artigos de György Lukács e Miguel Vedda sobre esse romance de Goethe, e considerando o conjunto da obra de maturidade de Machado de Assis, quando o narrador assume a condução da narrativa guiando-a no ritmo frívolo e volúvel do capricho de classe, pretende-se investigar, neste texto, de que maneira a composição satírica de um narrador não confiável estabelece conexões entre esses dois escritores que deram forma sensível à (...) alienação de uma “consciência infeliz”. (shrink)