This paper addresses the existence of Hopf bifurcations in a directed acyclic network of neurons, each of them being modeled by a Hindmarsh–Rose neuronal model. The bifurcation parameter is the small parameter corresponding to the ratio of time scales between the fast and the slow dynamics. We first prove that, under certain hypotheses, the single uncoupled neuron can undergo a Hopf bifurcation. Hopf bifurcation occurrences in a directed acyclic network of HR neurons are then discussed. Numerical simulations are carried out (...) to observe these bifurcations and to illustrate the theoretical results. (shrink)

Antes incluso de que la España de 1992 celebrara e l V centenario del descubrimiento de América, Ferlosio publi có en la prensa varios textos críticos sobre la con q uista que luego fueron reuni dos en Esas Yndias equivocadas y malditas. Comentarios a la historia. Part iend o de aquí, p lante o la s pregunta s de qué es la historia y cómo debería escribirse y ensayo una r esp uesta de sde la crítica de la violencia de (...) Benjamin y la identificación que hace Ferlosio de Historia, Dios, dominación y s entido, fundamento de l a m ora l expiatoria y el principio de intercambio de bienes por valores. D esarrollar é la tesis, compartida por Ferlosio, Dussel y Lomax, de que 1492 fue el año eje entre la Reconquista de la península ibérica y la conquista de América, r etrocederé a la fusión de Cristianismo e Imperio Romano en Nicea, presentare la caracterización hecha por Ferlo sio de la guerra escatológica, cuyo garante es Dios, y rastrear é los antecedentes estoic os d el sentido. Finalizaré con Dussel para m o stra r cómo el discurso histórico puede ser c rític o (Benjamin), transitiv o ( Ferlosio ) y congénito con su objeto ( Timeo ), se lib e re de la lógica del Sentido (Ferlosio) y n o tenga que taparse los ojos ante lo que dice ( Anne Carson ). (shrink)

v. 1. Les arts et les sciences -- v. 2. L'être et l'esprit.

Paralelamente a su poesía, Bernard Noël desarrolla una obra en prosa que plantea interrogantes de orden cognitivo, en particular en torno a la percepción visual. La exploración de dispositivos tecnológicos (la cámara fotográfica) y de escenificaciones del acto de creación (la escena del pintor trabajando) es ocasión para contrastar la pertinencia de las intuiciones y reflexiones del poeta puestas bajo el foco de las actuales ciencias cognitivas. El trayecto de lo óptico a lo mental queda inscrito en una comprensión encarnada (...) y gestual de la cognición que apunta también hacia el surgimiento del lenguaje. Su poesía ha de ser pues entendida como el tramo final del proceso. (shrink)

'This book is a masterpiece of theoretical thought. It anticipates the actual achievements of much of what we now call sociolinguistics.

Things and Their Place in Theories Our talk of external things, our very notion of things, is just a conceptual apparatus that helps us to foresee and ...

Jane Elllen Harrison (1850-1928) fue una pionera: fue la primera mujer académica de Inglaterra, una de las primeras mujeres en cursar Estudios Clásicos en Newnham College de Cambridge, la primera mujer en recibir un doctorado honoris causa LLD (Doctor of Laws) en la Universidad de Aberdeen y la primera profesora de Cambridge.

Purpose. The knowledge influence analysis on the formation process of new anthropological images of man in the contexts of scientific achievements and innovative technologies is the basis of this study. It involves the solution of the following tasks: 1) explication of the ontological content of knowledge in the anthropo-cultural senses of the epoch; 2) analysis of the knowledge influence on the process of forming a new type of man; 3) characteristics of the modern anthropological situation in the context of digital (...) culture; 4) substantiation of interrelation of phatic communication with post-truth society in the dimensions of anthropo-social transformations of the present. Theoretical basis. Ontological content of knowledge determines the anthropo-cultural context of the epoch by forming a system of intellectual, value, social meanings of human life. The assertion of new anthropological types of man is caused by the changes in social and cultural space in the context of the growing influence of achievements in scientific knowledge and technology. Digital revolution as the process of expanding the possibilities of informational-digital reality, the substitution of knowledge for information gives rise to Homo digitalis – the digital man. He focuses on phatic communication, which in its intellectual meaninglessness is commensurate with the anthropological dimensions of post-truth society. Originality. It is substantiated that Homo digitalis is the result of a complex set of heterogeneous effects of scientific knowledge, which in modern post-truth conditions appears as different communicative practices. A condition for the formation of a new anthropological type of man in the perspective of scientific and technological progress is the affirmation of ethical wisdom. Conclusions. Knowledge in the process of evolution of socio-cultural life acquires constitutive significance for the process of formation of anthropological situations that manifest themselves in new images of man. Today, he is commensurate with the demands of digital culture, in which human life practices are increasingly becoming information and digital clusters embedded in the reality of a post-truth society. The means of overcoming the passivity of digital man is the formation of a new anthropological type based on a rethinking of the value system. (shrink)

The purpose of the article is the analysis of the causes of the systemic crisis that hit modern civilization through the description of its main structures, identifying the relationship between its elements, assessments of their heuristic potential. This will open up opportunities for finding ways to resolve this crisis, new directions of civilizational development. Theoretical basis of the research are the systems analysis, socio-philosophical and philosophical-anthropological approaches as well as the analysis of scientific developments in the field of global studies. (...) Originality lies in the fact that this article is the first to show the connection between the main structural elements of human civilization as a system. Change in one of the parameters leads to a change in all the others, together with a change in civilization as a whole. Conclusions. The reason for the deep crisis that hit modern civilization is its imbalance as a system. The most important elements of this system are population size, resources and technology, and the core is consciousness in its individual and collective forms. The perception, processing, and use of information, which is a defining civilizational resource, as well as the stability of the entire system depend on the state of consciousness. Consciousness, based on old, obsolete principles and stereotypes, is unable to cope with the most acute challenges of time. New consciousness, since it is formed, will mark the transition to a new theoretical picture of the world and a model of human behavior, in which people will act, driven by proven knowledge, and not willfulness and prejudice. The idea of forming a productive information environment where the ideas of constructiveness and creative work will dominate rather than consumerism and destruction, as is the case at present, must become the categorical imperative of the new consciousness. (shrink)

Purpose. The article suggested for consideration is aimed at clarifying the shift in human perception from the spatial turn announced by Michel Foucault, to a performative turn. The performative turn has an anthropological footing. It is based on the all-round investigation of the body’s principal role for cultural existence, as a result of a reverse reaction to artificial conceptual gap between space and body, which basically means ignoring the embodiment theme. An example of such theoretical deformation was Edmund Husserl’s “anthropology (...) phobia” revealed and thoroughly analysed by Hans Blumenberg in his critical works. Originality of the approach applied in this research, first and foremost, demonstrates not an abstract phenomenological conception as a theoretical construct, but a phenomenological activity itself, as well as practical work expressing antepredicative experience and solving the problems arising in this complicated process. Applying the Blumenberg’s analysis also allows to peep in the sideline notes of Edmund Husserl himself, which, for their part, acquire special meaning in relation to such a practical turn. Conclusions show the following state of affairs demonstrated by the anthropological and performative shift towards the body theme: 1) absolutisation of space without mentioning its relation to body experience is unreasonable and groundless, like in Husserl’s “anthropology phobia ”; 2) since the ground itself is a metaphorical anthropology basis, anthropology can reveal the structural conditions of perception due to thematic fronting of embodiment; 3) this gives anthropology some compensational features, to avoid false culture and nature dualism; 4) so, the space and body relationship is expressed by the Vehikel-phenomenon of the body itself, by placing, arranging and depicting, and thus replacing something missing and unavailable for direct contemplation, by revealing the spatial infrastructure for object perception, creating the presence conditions and metaphorically marking the contemplation boundary; 5) the depicting arrangement is at the same time a bodily performance, a play, staging and performing, which gives an aesthetic, poetic and emphatic impact on the use of philosophy language, in our case, on the way a phenomenology philosopher works with the language. (shrink)

The aim of this article is to question the nature of the socio-anthropological approach in Lefort’s thought. The author explores the complex relationship between Lefort and the Durkheimian French school of sociology in four stages: in the first, he shows Lefort as a sociologist ‘worthy of its name’ or, in other words, a sociologist interested in questioning the ‘institution of the social’. In the second, he focuses on the disturbing elements that Lefort introduces: the political and the division into the (...) French sociological approach. In the third stage, he focuses his attention on the sociological approach in Lefort’s way of thinking about democratic society. Finally, he concludes by referring to Lefort’s apparent opposition between philosophy and social sciences – and the errors that this may have engendered – in order to demonstrate the continuity of Lefort’s sociological approach. (shrink)

Introduction: Motor evoked potentials (MEPs) to transcranial magnetic stimulation are known to be susceptible to several sources of variability. However, conflicting evidences on individual characteristics in relatively small sample sizes have been reported. We investigated the effect of age, height, and sex on MEPs of the motor cortex and spinal roots in a large cohort. Methods: A total of 587 subjects clinically and neuroradiologically intact were included. MEPs were recorded during mild tonic contraction through a circular coil applied over the (...) “hot spot” of the first dorsal interosseous and tibialis anterior muscles, bilaterally. Central motor conduction time (CMCT) was estimated as the difference between MEP cortical latency and the peripheral motor conduction time by cervical or lumbar magnetic stimulation. Peak-to-peak MEP amplitude to cortical stimulation and right-to-left difference of each parameter were also measured. Results: After Bonferroni correction, general linear (multiple) regression analysis showed that both MEP cortical latency and peripheral motor conduction time at four limbs positively correlated with age and height. At lower limbs, an independent effect of sex on the same measures was also observed (with females showing smaller values than males). CMCT correlated with both age (negatively) and height (positively) when analyzed by a single regression; however, with a multiple regression analysis this significance disappeared, due to the correction for the multicollinearity within the dataset. Conclusions: Physical individual features need to be considered for a more accurate and meaningful MEPs interpretation. Both in clinical practice and in research setting, patients and controls should be matched for age, height, and sex. (shrink)

The Essay concerning Human Understanding was published at the end of 1689.1 It sold well, and within three years Locke was planning revisions for a second edition. Among those whose “advice and assistance” he sought was the Irish scientist William Molyneux. Locke had begun a correspondence with Molyneux a few months before, after the latter had lavishly praised the Essay and its author in the Epistle Dedicatory of his own Dioptrica Nova, published early in 1692. Here was a man, Locke (...) concluded, whose judgment one could trust. He returned Molyneux’s compliment in the Essay’s new edition, calling him “that very Ingenious and Studious promoter of real Knowledge, ... whom I am proud to call my friend”. (shrink)

Purpose. The article suggested for consideration is aimed at clarifying the shift in human perception from the spatial turn announced by Michel Foucault, to a performative turn. The performative turn has an anthropological footing. It is based on the all-round investigation of the body’s principal role for cultural existence, as a result of a reverse reaction to artificial conceptual gap between space and body, which basically means ignoring the embodiment theme. An example of such theoretical deformation was Edmund Husserl’s “anthropology (...) phobia” revealed and thoroughly analysed by Hans Blumenberg in his critical works. Originality of the approach applied in this research, first and foremost, demonstrates not an abstract phenomenological conception as a theoretical construct, but a phenomenological activity itself, as well as practical work expressing antepredicative experience and solving the problems arising in this complicated process. Applying the Blumenberg’s analysis also allows to peep in the sideline notes of Edmund Husserl himself, which, for their part, acquire special meaning in relation to such a practical turn. Conclusions show the following state of affairs demonstrated by the anthropological and performative shift towards the body theme: 1) absolutisation of space without mentioning its relation to body experience is unreasonable and groundless, like in Husserl’s “anthropology phobia ”; 2) since the ground itself is a metaphorical anthropology basis, anthropology can reveal the structural conditions of perception due to thematic fronting of embodiment; 3) this gives anthropology some compensational features, to avoid false culture and nature dualism; 4) so, the space and body relationship is expressed by the Vehikel-phenomenon of the body itself, by placing, arranging and depicting, and thus replacing something missing and unavailable for direct contemplation, by revealing the spatial infrastructure for object perception, creating the presence conditions and metaphorically marking the contemplation boundary; 5) the depicting arrangement is at the same time a bodily performance, a play, staging and performing, which gives an aesthetic, poetic and emphatic impact on the use of philosophy language, in our case, on the way a phenomenology philosopher works with the language. (shrink)

BackgroundSonographic mesenteric pattern in celiac disease (CD) suggests a hyperdynamic circulation. Despite the well-known CD-related neurological involvement, no study has systematically explored the cerebral hemodynamics to transcranial Doppler sonography.Materials and methodsMontreal Cognitive Assessment (MoCA) and 17-item Hamilton Depression Rating Scale (HDRS) were assessed in 15 newly diagnosed subjects with CD and 15 age-, sex-, and education-matched healthy controls. Cerebral blood flow (CBF) velocities and indices of resistivity (RI) and pulsatility (PI) from the middle cerebral artery (MCA), bilaterally, and the basilar (...) artery (BA) were recorded. We also assessed cerebral vasomotor reactivity (CVR) through the breath-holding test (BHT).ResultsWorse scores of MoCA and HDRS were found in patients compared to controls. Although patients showed higher values of CBF velocity from MCA bilaterally compared to controls, both at rest and after BHT, no comparison reached a statistical significance, whereas after BHT both RI and PI from BA were significantly higher in patients. A significant negative correlation between both indices from BA and MoCA score were also noted.ConclusionThese treatment-naïve CD patients may show some subtle CVR changes in posterior circulation, thus possibly expanding the spectrum of pathomechanisms underlying neuroceliac disease and in particular gluten ataxia. Subclinical identification of cerebrovascular pathology in CD may help adequate prevention and early management of neurological involvement. (shrink)