Mesoscopic effects in an agent-based bargaining model in regular lattices

The effect of spatial structure has been proved very relevant in repeated games. In this work we propose an agent based model where a fixed finite population of tagged agents play iteratively the Nash demand game in a regular lattice. The model extends the multiagent bargaining model by Axtell, Epstein and Young [1] modifying the assumption of global interaction. Each agent is endowed with a memory and plays the best reply against the opponent’s most frequent demand. We focus our analysis on the transient dynamics of the system, studying by computer simulation the set of states in which the system spends a considerable fraction of the time. The results show that all the possible persistent regimes in the global interaction model can also be observed in this spatial version. We also find that the mesoscopic properties of the interaction networks that the spatial distribution induces in the model have a significant impact on the diffusion of strategies, and can lead to new persistent regimes different from those found in previous research. In particular, community structure in the intratype interaction networks may cause that communities reach different persistent regimes as a consequence of the hindering diffusion effect of fluctuating agents at their borders.Spanish Ministry of Science and Innovation, references TIN2008-06464-C03-02 and CSD2010-00034 (CONSOLIDER-INGENIO 2010), and by the Junta de Castilla y Leon, references VA006A009, BU034A08 and GREX251-200

Axelrod’s metanorm games on networks

Metanorms is a mechanism proposed to promote cooperation in social dilemmas. Recent experimental results show that network structures that underlie social interactions influence the emergence of norms that promote cooperation. We generalize Axelrod’s analysis of metanorms dynamics to interactions unfolding on networks through simulation and mathematical modeling. Network topology strongly influences the effectiveness of the metanorms mechanism in establishing cooperation. In particular, we find that average degree, clustering coefficient and the average number of triplets per node play key roles in sustaining or collapsing cooperationSpanish MICINN projects CSD2010-00034 (CONSOLIDER-INGENIO 2010) and DPI2010-16920, and by the Junta de Castilla y Leo´ n, references BU034A08 and GREX251-2009

Dostoyevsky and epilepsy: between science and mystique Dostoiévski e a epilepsia: entre a ciência e a mística

This article, the result of a research project presented as a Master's degree dissertation in the graduate program of "Teaching of Health Education" at UNIFESP, seeks to highlight the pertinence of analyzing epilepsy and especially, the paradoxical experience of the epileptic individual through literary narrative. Using as its object the novel, The Idiot, by Fyodor Dostoyevsky, it seeks to discuss the relationship between epilepsy and the mystic experience, bearing in mind the context of the scientific and humanistic perspectives of the 19th century and today.<br>Este artigo, fruto de uma pesquisa apresentada como dissertação de mestrado junto ao programa de pós-graduação "Ensino em Ciências da Saúde" da UNIFESP, procura apontar a pertinência de se analisar a epilepsia e, principalmente, a paradoxal experiência do epiléptico através da narrativa literária. Tomando como objeto o romance O Idiota, de Fiódor Dostoiévski, procura-se discutir a relação entre epilepsia e experiência mística, considerando o contexto das perspectivas científicas e humanísticas do século XIX e de hoje