As a singular witness and actor of the tumultuous 20th century, Ernst Jünger remains a controversial and enigmatic figure known above all for his vivid autobiographical accounts of experience in the trenches of the First World War. This article will argue that throughout his entire oeuvre, from personal diaries to novels and essays, he never ceased to grapple with what he viewed as the central question of the age, namely that of the problem of nihilism and the means to overcome (...) it. Inherited from Nietzsche’s diagnosis of Western civilization in the late 19th century, to which he added an acute observation of the particular role of technology within it, Jünger would employ this lens to make sense of the seemingly absurd industrial slaughter of modern war and herald the advent of a new voluntarist and bellicist order that was to imminently sweep away timorous and decadent bourgeois societies obsessed with security and self-preservation. Jünger would ultimately see his expectations dashed, including by the forms of rule that National Socialism would take, and eventually retreated into a reclusive quietism. Yet he never abandoned his central problematique of nihilism, developing it further in exchanges with Martin Heidegger after the Second World War. And for all the ways in which he may have erred, his life-long struggle with meaning in the age of technique and its implications for war and security continues to make Jünger a valuable interlocutor of the present. (shrink)

The quantification of phase synchrony between neuronal signals is of crucial importance for the study of large-scale interactions in the brain. Two methods have been used to date in neuroscience, based on two distinct approaches which permit a direct estimation of the instantaneous phase of a signal [Phys. Rev. Lett. 81 (1998) 3291; Human Brain Mapping 8 (1999) 194]. The phase is either estimated by using the analytic concept of Hilbert transform or, alternatively, by convolution with a complex wavelet. In (...) both methods the stability of the instantaneous phase over a window of time requires quantification by means of various statistical dependence parameters (standard deviation, Shannon entropy or mutual information). The purpose of this paper is to conduct a direct comparison between these two methods on three signal sets: (1) neural models; (2) intracranial signals from epileptic patients; and (3) scalp EEG recordings. Levels of synchrony that can be considered as reliable are estimated by using the technique of surrogate data. Our results demonstrate that the differences between the methods are minor, and we conclude that they are fundamentally equivalent for the study of neuroelectrical signals. This offers a common language and framework that can be used for future research in the area of synchronization. © 2001 Published by Elsevier Science B.V. (shrink)

Unlike the Phaedoitself, its reception in Antiquity remains little studied. By examining the extant commentaries, their sources, and the dialogue's presence in the reflections of ancient thinkers both inside and outside the Platonic tradition, this volume aims to reconstruct its ancient history.

Faire de la biologie et penser la biologie constituent deux activités indispensables l'une à l'autre. L'exemple de la " métaphore du programme génétique " nous montre, qu'entre l'explication atomique des physiciens et l'explication vitaliste, il peut y avoir un niveau moléculaire spécifique d'analyse des propriétés du vivant. Cet ouvrage a pour double ambition de montrer comment cette métaphore s'est constituée et quels en sont les éléments discutables. Il se propose d'analyser le processus à travers lequel elle est passée historiquement de (...) l'état de concept dynamique et opératoire à celui d'une image figée de plus en plus décalée de la réalité de la connaissance biologique. (shrink)

Unlike the _Phaedo_ itself, its reception in Antiquity remains little studied. By examining the extant commentaries, their sources, and the dialogue’s presence in the reflections of ancient thinkers both inside and outside the Platonic tradition, this volume aims to reconstruct its ancient history.

This book, originally published in French, examines the philosophical debates on functions over the last forty years and proposes new ways of analysis. Pervasive throughout the life sciences, the concept of function has the air of an epistemological scandal: ascribing a function to a biological structure or process amounts to suggesting that it is explained by its effects. This book confronts the debates on function with the use of the notion in a wide range of disciplines, such as biology, psychology, (...) and medicine. It also raises the question of whether this notion, which is as old in the history of technology as it is in the life sciences, has the same meaning in these two domains. (shrink)

Antoine Arnauld and Pierre Nicole were philosophers and theologians associated with Port-Royal Abbey, a centre of the Catholic Jansenist movement in seventeenth-century France. Their enormously influential Logic or the Art of Thinking, which went through five editions in their lifetimes, treats topics in logic, language, theory of knowledge and metaphysics, and also articulates the response of 'heretical' Jansenist Catholicism to orthodox Catholic and Protestant views on grace, free will and the sacraments. In attempting to combine the categorical theory of (...) the proposition with a Cartesian account of knowledge, their Logic represents the classical view of judgment which inspired the modern transformation in logic and semantic theory by Frege, Russell, Wittgenstein and recent philosophers. This edition presents a new translation of the text, together with a historical introduction and suggestions for further reading. (shrink)

Un nouveau morceau de FD III 1, 510 révèle que l'épigramme inscrite célèbre les victoires des chevaux de Callias III fils d'Hipponicos, le riche Athénien ami de Socrate et des sophistes. La victoire olympique a échappé à Callias, mais les deux premiers Callias l'avaient obtenue. L'épigramme éclaire le sens d'un passage des Helléniques de Xénophon (VI 3, 3). — Épigramme de cinq distiques élégiaques d'un tombeau collectif à Ambracie (vie s.). Texte repris de YArchDelt (1986), avec nouvelle lecture et commentaires. (...) Une ambassade de Corinthe avec son escorte d'Ambraciotes a été assassinée entre le port et la ville par un clan indigène. Caractères corinthiens, stoichedon et boustrophedon. (shrink)

L'auteur donne une liste d'addenda et corrigenda dont les plus importants concernent des erreurs typographiques sur des nombres dans la comptabilité.

Le nouveau livre de Frédéric Brahami montre comment il faut considérer globalement la réaction des penseurs postrévolutionnaires à la Révolution pour saisir la façon dont s’est élaborée la philosophie politique qui est encore la nôtre, pour autant que nous lisions notre actualité politique à la lumière des sciences sociales. Pour fournir les schèmes de notre pensée politique, il a fallu que les critiques contre-révolutionnaires de la modernité politique soient reprises par les progressistes sensibles à la « question sociale ». La (...) pensée sociale du xixe siècle pouvait alors dégager la raison immanente aux mœurs modernes, en découvrant la double nécessité d’en faire l’objet d’une science et de les comprendre politiquement. Au-delà d’une généalogie alternative et stimulante de la politique moderne, c’est tout une philosophie de l’histoire sociale et intellectuelle qui est là engagée, au terme de laquelle nos sociétés démocratiques apparaissent comme ces sociétés qui ne cessent de se réfléchir elles-mêmes en se pensant politiquement. (shrink)

Antoine Pecquet wrote in the eighteenth century during the reign of Louis XV. Although he included Pascal among those he admired, he considered Alexander Pope his true mentor. In Part 1 of "Diverse Thoughts on Man," Pecquet reflects on Man's responsibilities as an individual: in Part 2, on Man's responsibilities as a member of society. Among these responsibilities he includes human and social concerns, such as parental and filial obligations, and the transfer of wealth between generations. In the tradition (...) of Montaigne, Pecquet intended his "Diverse Thoughts on Man" to help his readers learn more about themselves. Although he felt that those who would profit most from his book were readers who had not greatly pondered about themselves, he believed that every reader could find something of value in it. (shrink)

The capacity to stabilize the content of attention over time varies among individuals, and its impairment is a hallmark of several mental illnesses. Impairments in sustained attention in patients with attention disorders have been associated with increased trial-to-trial variability in reaction time and event-related potential deficits during attention tasks. At present, it is unclear whether the ability to sustain attention and its underlying brain circuitry are transformable through training. Here, we show, with dichotic listening task performance and electroencephalography, that training (...) attention, as cultivated by meditation, can improve the ability to sustain atten- tion. Three months of intensive meditation training reduced variability in attentional processing of target tones, as indicated by both enhanced theta-band phase consistency of oscillatory neural responses over anterior brain areas and reduced reaction time variability. Furthermore, those individuals who showed the greatest increase in neural response consistency showed the largest decrease in behav- ioral response variability. Notably, we also observed reduced variability in neural processing, in particular in low-frequency bands, regardless of whether the deviant tone was attended or unattended. Focused attention meditation may thus affect both distracter and target processing, perhaps by enhancing entrainment of neuronal oscillations to sensory input rhythms, a mechanism important for controlling the content of attention. These novel findings highlight the mechanisms underlying focused attention meditation and support the notion that mental training can significantly affect attention and brain function. (shrink)

Understanding the emergence of a tangible 4-dimensional space-time from a quantum theory of gravity promises to be a tremendously difficult task. This article makes the case that this task may not have to be carried. Space-time as we know it may be fundamental to begin with. I recall the common arguments against this possibility and review a class of recently discovered models bypassing the most serious objection. The generic solution of the measurement problem that is tied to semiclassical gravity as (...) well as the difficulty of the alternative make it a reasonable default option in the absence of decisive experimental evidence. (shrink)

We argue that ecology in general and biodiversity and ecosystem function research in particular need an understanding of functions which is both ahistorical and evolutionarily grounded. A natural candidate in this context is Bigelow and Pargetter’s evolutionary forward-looking account which, like the causal role account, assigns functions to parts of integrated systems regardless of their past history, but supplements this with an evolutionary dimension that relates functions to their bearers’ ability to thrive and perpetuate themselves. While Bigelow and Pargetter’s account (...) focused on functional organization at the level of organisms, we argue that such an account can be extended to functional organization at the community and ecosystem levels in a way that broadens the scope of the reconciliation between ecosystem ecology and evolutionary biology envisioned by many BEF researchers. By linking an evolutionary forward-looking account of functions to the persistence-based understanding of evolution defended by Bouchard and others, and to the theoretical research on complex adaptive systems, we argue that ecosystems, by forming more or less resilient assemblages, can evolve even while they do not reproduce and form lineages. We thus propose a Persistence Enhancing Propensity account of role functions in ecology to account for this overlap of evolutionary and ecological processes. (shrink)

Spiritualism designates a philosophy that lays claim to the separation of mind and body and the ontological and epistemological primacy of the former. In France, it is associated with the names of Victor Cousin and René Descartes, or more precisely with what Cousin made of Descartes as the founding father of a brittle rational psychology, closed off from the positive sciences, and as a critic in respect to the empiricist legacy of the idéologues. Moreover, by considering merely the end result, (...) severed from its polemical genesis, we are prevented from understanding how the category of experience constituted a crucial question for spiritualism itself. Through returning to the origin of these discussions in the 1826 preface to Cousin’s Fragments philosophiques, this essay pursues a threefold path: to show that the public birth of Cousinian spiritualism coincides with the affirmation of applying the experimental method, issuing from Bacon, to the study of facts of consciousness; that Cousin’s later evolution follows a process of radicalization—that is, in this context, of ontologization and of reduction; and that by recovering this genesis, we can distinguish many forms of spiritualisms committed to the experimental method, both in alliance with the early Cousin and against the later Cousin. In this way, we can rediscover the interwoven philosophical links, lost in the process of institutionalization, between metaphysical demands and empiricist concerns, or between “French” philosophy and the legacy of Condillac. (shrink)

To fulfill their crucial duty of relieving suffering in their patients, physicians may have to administer palliative sedation when they implement treatment-limitation decisions such as the withdrawal of life-supporting interventions in patients with poor prognosis chronic severe brain injury. The issue of palliative sedation deserves particular attention in adults with serious brain injuries and in neonates with severe and irreversible brain lesions, who are unable to express pain or to state their wishes. In France, treatment limitation decisions for these patients (...) are left to the physicians. Treatment-limitation decisions are made collegially, based on the presence of irreversible brain lesions responsible for chronic severe disorders of consciousness. Before these decisions are implemented, they are communicated to the relatives. Because the presence and severity of pain cannot be assessed in these patients, palliative analgesia and/or sedation should be administered. However, palliative sedation is a complex strategy that requires safeguards to prevent a drift toward hastening death or performing covert euthanasia. In addition to the law on patients' rights at the end of life passed in France on April 22, 2005, a recent revision of Article 37 of the French code of medical ethics both acknowledges that treatment-limitation decisions and palliative sedation may be required in patients with severe brain injuries and provides legal and ethical safeguards against a shift towards euthanasia. This legislation may hold value as a model for other countries where euthanasia is illegal and for countries such as Belgium and Netherlands where euthanasia is legal but not allowed in patients incapable of asking for euthanasia but in whom a treatment limitation decision has been made. (shrink)

C’est en 1913 que sont publiées les Idées directrices pour une phénoménologie. Fruit d’une longue genèse, ce livre constitue un véritable manifeste pour une nouvelle science, la « science des phénomènes », décrivant les actes de la conscience et les structures de la subjectivité. Laurent Perreau, Antoine Grandjean et leurs contributeurs interrogent le projet et les méthodes de ce maître ouvrage : la réduction, le rapport à Descartes, l’intentionnalité, la notion d’évidence apodictique... Une étude majeure sur une oeuvre qui (...) a inspiré la philosophie moderne et marqué en profondeur la pensée de Max Scheler, Heidegger, Hannah Arendt, Merleau-Ponty, Paul Ricoeur... (shrink)

Recent brain imaging studies using functional magnetic resonance imaging (fMRI) have implicated insula and anterior cingulate cortices in the empathic response to another’s pain. However, virtually nothing is known about the impact of the voluntary generation of compassion on this network. To investigate these questions we assessed brain activity using fMRI while novice and expert meditation practitioners generated a loving-kindness-compassion meditation state. To probe affective reactivity, we presented emotional and neutral sounds during the meditation and comparison periods. Our main hypothesis (...) was that the concern for others cultivated during this form of meditation enhances affective processing, in particular in response to sounds of distress, and that this response to emotional sounds is modulated by the degree of meditation training. The presentation of the emotional sounds was associated with increased pupil diameter and activation of limbic regions (insula and cingulate cortices) during meditation (versus rest). During meditation, activation in insula was greater during presentation of negative sounds than positive or neutral sounds in expert than it was in novice meditators. The strength of activation in insula was also associated with self-reported intensity of the meditation for both groups. These results support the role of the limbic circuitry in emotion sharing. The comparison between meditation vs. rest states between experts and novices also showed increased activation in amygdala, right temporo-parietal junction (TPJ), and right posterior superior temporal sulcus (pSTS) in response to all sounds, suggesting, greater detection of the emotional sounds, and enhanced mentation in response to emotional human vocalizations for experts than novices during meditation. Together these data indicate that the mental expertise to cultivate positive emotion alters the activation of circuitries previously linked to empathy and theory of mind in response to emotional stimuli.. (shrink)