From authenticism to alethism: Against McCarroll on observer memory

In opposition to the natural view that observer perspective memory is bound to be inauthentic, McCarroll (2018) argues for the surprising conclusion that memories in which the subject sees himself in the remembered scene are, in many cases, true to the subject’s original experience of the scene. By means of a careful reconstruction of his argument, this paper shows that McCarroll does not succeed in establishing his conclusion. It shows, in fact, that we ought to come to the opposed conclusion that, while it may be possible in principle for observer perspective memory to be authentic, this is unlikely ever to happen in practice. The natural view, in short, is more or less right.

     

Functional networks involved in spatial learning strategies in middle-aged rats

Our aim was to assess the way that middle-aged rats solve spatial learning tasks that can be performed using different strategies. We assessed the brain networks involved in these spatial learning processes using Principal Component Analysis. Two tasks were performed in a complex context, a four-arm radial maze, in which each group must use either an allocentric or an egocentric strategy. Another task was performed in a simple T-maze in which rats must use an egocentric strategy. Brain metabolic activity was quantified to evaluate neural changes related to spatial learning in the described tasks. Our findings revealed that two functional networks are involved in spatial learning in aged rats. One of the networks, spatial processing, is composed of brain regions involved in the integration of sensory and motivational information. The other network, context-dependent processing, mainly involves the dorsal hippocampus and is related to the processing of contextual information from the environment. Both networks work together to solve spatial tasks in a complex spatial environment.     

Some problems concerning language and physics

We discuss three problems concerning the use of formal languages in theoretical physics: (i) the definability of time and spacetime in classical physical theories; (ii) how to cope with indistinguishable elementary particles in quantum mechanics without labeling them; and (iii) how to get a formal picture of quantum states jumping.     

Sakuma Shozan's Hegelian vision for Japan

By the mid‐19th century, an increasing number of Japan's political leaders and scholars realized that Japan had to adapt and incorporate some elements of Western‐style industrialization into their own political and economic order as the necessary means to remain independent of Western imperialism. The Opium War in China, and later the Euro‐American bombardments of the domain capitals in Choshu and Satsuma demonstrated that trying to defend the realm with only an increased emphasis on coastal defense would ultimately fail to keep out the barbarians from the West. Sakuma Shozan, a samurai scholar from Matsushiro, proposed a dichotomous philosophy of ‘Eastern ethics, Western science’ as the means to strengthen Japan both internally and externally, and allow Japan to maintain its independence. In this paper, I argue that Sakuma's dichotomous approach can be interpreted within a Hegelian dialectical paradigm. After the traditional order of Japan (Eastern ethics as Idea/Thesis) came into contact with the industrializing order of the West (Western science as Nature/Anti‐Thesis), Sakuma believed a new order would be created in Japan (Synthesis) that combined an increased knowledge on the Eastern ethics of Neo‐Confucianism with the ‘new’ scientific knowledge of the West.     

Novel duplex antimicrobial silver films deposited by magnetron sputtering

Novel duplex silver films, exhibiting antimicrobial behaviour, have been produced by magnetron sputtering and studied using high-resolution scanning electron microscopy. These films were grown under deposition conditions in which the gas composition, process pressure and input power were varied. It was determined that biologically active films had a nanocrystalline structure consisting of loosely held particles with a grain size of the order of 15nm. The importance of oxygen in the sputtering environment and the resultant microstructure are discussed to explain the unique antimicrobial properties of these silver films.     

Determinantes familiares,escolares y grupales del consumo de drogas en la adolescencia. Implicaciones para el Tratamiento

Resumen

El propósito del presente artículo es el de llamar la atención acerca de la necesidad de recoger los datos que señalan la importancia de los grupos familiar, escolar y de iguales, de cara a la elaboration de programas concretos de prevención y tratamiento de incidencia en estos tres entornos del adolescente. Con este fin, en primer lugar se analizarán los principales hallazgos de las investigaciones que relacionan la familia, la escuela y el grupo de iguales con la aparición de drogodependencias en los adolescentes. Como segundo paso se apuntarán las líneas generales de aplicación de estos hallazgos en programas de prevención e intervención.