Directional deep brain stimulation contacts provide greater spatial flexibility for therapy than traditional ring-shaped electrodes, but little is known about longitudinal changes of impedance and orientation. We measured monopolar and bipolar impedance of DBS contacts in 31 patients who underwent unilateral subthalamic nucleus deep brain stimulation as part of a randomized study. At different follow-up visits, patients were assigned new stimulation configurations and impedance was measured. Additionally, we measured the orientation of the directional lead during surgery, immediately after surgery, and (...) 1 year later. Here we contrast impedances in directional versus ring contacts with respect to local anatomy, active stimulation contact, and over time. Directional contacts display larger impedances than ring contacts. Impedances generally increase slightly over the first year of therapy, save for a transient decrease immediately post-surgery under general anesthesia during pulse generator placement. Local impedances decrease at active stimulation sites, and contacts in closest proximity to internal capsule display higher impedances than other anatomic sites. DBS leads rotate slightly in the immediate postoperative period but otherwise remain stable over the following year. These data provide useful information for setting clinical stimulation parameters over time. (shrink)

Volume 28, Issue 3, July 2020, Page 313-316.

This volume unites various contributions reflecting the intellectual interests exhibited by Professor Herman Parret (Institute of Philosophy, Leuven), who has continued to observe, and often critically assess, ongoing developments in pragmatics throughout his career. In fact, Parret's contributions to philosophical and empirical/linguistic pragmatics present substantive proposals in the epistemics of communication, while simultaneously offering meta-comments on the ideological premises of extant pragmatic analyses. In a lengthy introduction, an overview is provided of his achievements in promoting an integrated, "maximalist" pragmatics, as (...) well as of the links between his own work in philosophy of language and in semiotics and aesthetics. The remaining 12 essays address relevant pragmatic themes or look into the relation between pragmatics and neighboring disciplines. They deal with grammatical deixis (Brisard, Ikegami) and mood (van der Auwera & Schalley), performativity (Harnish, Holdcroft), speech-act types and their praxeological dimensions (Roulet, Van Overbeke), Wittgensteinian language games (Marques, Parisi), cultural and intercultural identities (Vandenabeele, Verschueren), and the visual arts (Wildgen). (shrink)

The Ukrainian photographer Sergey Bratkov started his career in 1987 with his first solo shows in Kharkiv, Cheb, and Tel Aviv. He has since enjoyed international recognition from solo and group exhibitions in Europe an.

A vast stream of empirical work has revealed that coach and athlete leadership are important determinants of sport teams’ functioning and performance. Although coaches have a direct impact on individual and team outcomes, they should also strive to stimulate athletes to take up leadership roles in a qualitative manner. Yet, the relation between coach leadership behavior and the extent of high-quality athlete leadership within teams remains underexposed. Based on organizational justice theory and the social identity approach, the present research tested (...) whether perceived justice of the coach positively predicts the quality of athlete leadership. Furthermore, we examined the role of group dynamic processes within this relation. Belgian volleyball and basketball players were asked to rate the justice of their coach, their team identification, the task cohesion, and the athlete leadership quality in the team. Structural equation modeling indicated that coaches’ perceived justice positively predicted the quality of athletes’ leadership, and that this relation was established through three intermediate steps. These results suggest that fair coach behavior does not only bridge the gap between leadership and followership, it also has the potential to improve the quality of athletes’ leadership within sport teams. More specifically, findings suggest that coaches’ perceived justice cultivates a shared social identity characterized by high levels of players’ identification with their team, which in turn increased their perceptions of the team’s task cohesion. Finally, this increased task cohesion encouraged the athlete leaders to demonstrate high-quality leadership. (shrink)

In this "Dictionary," more than four hundred biographical entries encompass all the Dutch thinkers who exercised a major influence on the intellectual life of the Golden Age, as well as those who developed their ideas and beliefs through interaction with other scholars. Additional entries describe foreign philosophers who lived in the country temporarily and whose work was influenced by their stay. These include John Locke, Rene Descartes and Pierre Bayle.

What is property, and why does our species happen to have it? In The Property Species, the economist Bart Wilson explores how we acquire, perceive, and know the custom of property, and why this might be relevant to social scientists, philosophers, and legal scholars for understanding how property works in the twenty-first century.

The recent in vitro derivation of gamete‐like cells from mouse embryonic stem (mES) cells is a major breakthrough and lays down several challenges, both for the further scientific investigation and for the bioethical and biolegal discourse. We refer here to these cells as gamete‐like (sperm‐like or oocyte‐like, respectively), because at present there is still no evidence that these cells behave fully like bona fide sperm or oocytes, lacking the fundamental proof, i.e. combination with a normally derived gamete of the opposite (...) sex to yield a normal individual. However, the results published so far do show that these cells share some defining features of gametes. We discuss these results in the light of the bioethical and legal questions that are likely to arise would the same process become possible with human embryonic stem (hES) cells. (shrink)

The recent in vitro derivation of gamete‐like cells from mouse embryonic stem (mES) cells is a major breakthrough and lays down several challenges, both for the further scientific investigation and for the bioethical and biolegal discourse. We refer here to these cells as gamete‐like (sperm‐like or oocyte‐like, respectively), because at present there is still no evidence that these cells behave fully like bona fide sperm or oocytes, lacking the fundamental proof, i.e. combination with a normally derived gamete of the opposite (...) sex to yield a normal individual. However, the results published so far do show that these cells share some defining features of gametes. We discuss these results in the light of the bioethical and legal questions that are likely to arise would the same process become possible with human embryonic stem (hES) cells. (shrink)

Opponents of biotechnology ofteninvoke the Precautionary Principle to advancetheir cause, whereas biotech enthusiasts preferto appeal to ``sound science.'' Publicauthorities are still groping for a usefuldefinition. A crucial issue in this debate isthe distribution of the burden of proof amongthe parties favoring and opposing certaintechnological developments. Indeed, the debateon the significance and scope of thePrecautionary Principle can be fruitfullyre-framed as a debate on the proper division ofburdens of proof. In this article, we attemptto arrive at a more refined way of thinkingabout (...) this problem in order to escape from theexisting polarization of views between ``guiltyuntil proven innocent'' and ``innocent untilproven guilty.'' This way of thinking alsoenables a critical review of currentdemarcations between risk assessment and riskmanagement, or science and politics, and of themorally laden controversy on the relativeimportance of type-I and type-II errors instatistical testing. (shrink)

In this paper, a reaction is presented to Siegel’s claim that the pragma-dialectical theory of argumentation ignores or neglects epistemological viewpoints that he finds vital to any normative theory of argumentation. The focus is on the most important problems in Siegel’s argument: 1) the ambiguity of the term ‘argument’ and the alleged negligence of this ambiguity in pragma-dialectics; 2) the critical rational perspective of the pragma-dialectical account; and 3) the alleged negligence of the “abstract propositional sense” of argument in pragma-dialectics.

The formalism of abstracted quantum mechanics is applied in a model of the generalized Liar Paradox. Here, the Liar Paradox, a consistently testable configuration of logical truth properties, is considered a dynamic conceptual entity in the cognitive sphere (Aerts, Broekaert, & Smets, [Foundations of Science 1999, 4, 115–132; International Journal of Theoretical Physics, 2000, 38, 3231–3239]; Aerts and colleagues[Dialogue in Psychology, 1999, 10; Proceedings of Fundamental Approachs to Consciousness, Tokyo ’99; Mind in Interaction]. Basically, the intrinsic contextuality of the truth-value (...) of the Liar Paradox is appropriately covered by the abstracted quantum mechanical approach. The formal details of the model are explicited here for the generalized case. We prove the possibility of constructing a quantum model of the m-sentence generalizations of the Liar Paradox. This includes (i) the truth–falsehood state of the m-Liar Paradox can be represented by an embedded 2m-dimensional quantum vector in a (2m) m -dimensional complex Hilbert space, with cognitive interactions corresponding to projections, (ii) the construction of a continuous ‘time’ dynamics is possible: typical truth and falsehood value oscillations are described by Schrödinger evolution, (iii) Kirchoff and von Neumann axioms are satisfied by introduction of ‘truth-value by inference’ projectors, (iv) time invariance of unmeasured state. (shrink)

The aim of this chapter is to discuss the central role of the notion of " habit " (Gewohnheit) in Hegel's theory of " embodiment " (Verleiblichung) and to show that the philosophical outcome of the Anthropology is that habit, understood as a sensorimotor life form, is not only an enabling condition for there to be mindedness, but is more strongly an ontological constitutive condition of all its levels of manifestation. Moreover, I will argue that Hegel's approach somehow makes a (...) model of embodied cognition available which offers a unified account of the three main senses of embodiment understood as both a physiological, a functional, and a phenomenological process. In this sense Hegel's approach to habit can make a useful contribution to the contemporary debate on embodiment in philosophy of mind, the cognitive sciences, and action theory. For a long time habit in 20th century philosophy and science has been mostly read in a negative way, identified with mechanical and repetitive routine. The reconstruction of Hegel’s approach is particularly relevant here and can fruitfully contribute to this discussion, since it offers us not only a model that assigns to habit a positive constitutive role in the formation of embodied human mindedness but which also overcomes the dualism between habitual motor routine and intentional activities that is prevalent nowadays in the cognitive sciences and in action theory, and allows for some sense of natural agency as belonging to animal life. Furthermore, Hegel’s approach cuts across the great divide between associationist and holistic approaches to habit that has for a long time dominated the philosophical debate on habit and still shapes the current opposition between classical cognitive science and embodied cognitive science. (shrink)

The legal basis for processing personal data and some other types of Big Data is often the informed consent of the data subject involved. Many data controllers, such as social network sites, offer terms and conditions, privacy policies or similar documents to which a user can consent when registering as a user. There are many issues with such informed consent: people get too many consent requests to read everything, policy documents are often very long and difficult to understand and users (...) feel they do not have a real choice anyway. Furthermore, in the context of Big Data refusing consent may not prevent predicting missing data. Finally, consent is usually asked for when registering, but rarely is consent renewed. As a result, consenting once often implies consent forever. At the same time, given the rapid changes in Big Data and data analysis, consent may easily get outdated. This paper suggests expiry dates for consent, not to settle questions, but to put them on the table as a start for further discussion on this topic. Although such expiry dates may not solve all the issues of informed consent, they may be a useful tool in some situations. (shrink)

In this paper two systems of AGM-like Paraconsistent Belief Revision are overviewed, both defined over Logics of Formal Inconsistency (LFIs) due to the possibility of defining a formal consistency operator within these logics. The AGM° system is strongly based on this operator and internalize the notion of formal consistency in the explicit constructions and postulates. Alternatively, the AGMp system uses the AGM-compliance of LFIs and thus assumes a wider notion of paraconsistency - not necessarily related to the notion of formal (...) consistency. (shrink)

ABSTRACT In this article I will first reconstruct a Deweyan model of social ontology, based on the process of habituation. Habit ontology leads to a social philosophy that is not merely descriptive, since it involves a critical redescription of the social world. I will argue that a habit-modeled social ontology is critical insofar as it includes an account of social transformation and of the inevitability of social conflict. Such an understanding is based on a diagnosis of social pathologies of our (...) form of life and includes an account of the experience of domination. Accordingly, it is described as a matter of an imbalance of recognition that embodies subjugating patterns and is seen from the critical perspective of freedom understood as emancipation from oppression. This leads to a reconstruction of the genesis of critical attitudes from life's processes of habituation, which leads to an extended naturalist account of social authority. (shrink)

By Belief Revision it is understood a system that logically explains the rational process of changing beliefs by taking into account a new piece of information. The most influential approach in this field of study, the AGM system, proposed by Alchourrón, Gärdenfors, and Makinson, postulates rationality criteria for different types of belief change. In this paper I shall assess the relationship between those criteria and argue for an opposition between the principles of Information Economy and Consistency. Furthermore, I shall argue (...) that Paraconsistent Belief Revision manages to minimise this friction in the best possible way. (shrink)

My research takes as its guiding thread the statement from Hegel's lectures on the philosophy of spirit of 1805-06, that «cognition is recognition[Erkennen ist Anerkennen]». In this perspective I delineate, first, the consequences of this position for Hegel's epistemology, in particular with reference to the question of skepticism. Then, I show in what sense the recognitive conception of knowledge makes it possible for Hegel to comprehend unitarily, on one hand, cognition as exercise of natural capacities and cognition as exercise of (...) normative capacities socially articulated, and,on the other hand, theoretical self-consciousness and practical self-consciousness. The gnoseological importance of this solution can be comprehended only if we reconstruct the evolution of Hegel's thought in that span of time in which he most directly tackles the issue of skepsis: that is, from 1797 - the beginning of his Frankfurt period - when he began to occupy himself with gnoseological questions, until the end of his stay in Jena,which begins in 1801 and concludes in 1807 with the writing of the Phenomenology. The analysis of the development of the Hegelian theory of knowledge - worked out in the first part of my study - is dealt with in the context of a reconstruction of the historico-argumentative constellation within which it matured. The constellation of importance for our analysis is represented by the skeptical crisis - triggered by authors such as Schulze, Maimonand Platner - that invested the post-Kantian galaxy, within which the idealist solutions to the problem of cognition matured. Through the analysis of journals and authors with whom Hegel came directly or indirectly into contact - from Platner to Reinhold, Jacobi, Fichte and Schelling, to Hölderlin and Sinclair, concluding with Zeender, Krug, Bouterwek and Werneburg, and among the journals Fülleborn's Beiträge and Niethammer's Journal in particular - it is possible to map the various solutions proposed for the skeptical problem andsee how it is in relation to this problem that the conceptions of self-consciousness evolve and the very concept of "interpersonality" - "intersubjectivity" - emerges for the first time. At the same time, pursuing my objective of broadening the investigation of the phenomenon of recognition, which in my view is not reducible to the field of practical philosophy, I proposea fresh reconstruction of the lexical and conceptual evolution of the various terms -Erkennen, Wiedererkennen, Recognition, Anerkennen - through which the various modalities of the phenomenon of recognition were indicated in the philosophical tradition to which Hegel refers: recognition of objects as perceptive reidentification; reminiscence on the level of theory of memory; recognition of subjects as self-recognition (apperception) and attribution to others of intentionality; logical recognition as recognition of the validity of a proposition; moral recognition, where "recognizing" generally means approving, accepting(more specifically, someone may be "recognized" as an autonomous subject and as a unique,genuine individuality). I focus in particular on the theory of memory as «recognitio» in Wolff and in his school, on the conception of «reconnaissance» in Bonnet, on Kantian«Recognition» and on the theory of «Anerkennen» in Ernst Platner. This investigation serves, on the one hand, to show how the phenomenon of recognition is central for a comprehension of the structure both of the lower and of the higher cognitive faculties. This ought to allow us to understand in what sense Hegel, taking intersubjective recognition as hisleading phenomenon, attempts to reunite the various meanings of recognition within a theory of knowledge on the basis of which «cognition is recognition». On the other hand, my conceptual and lexicographic investigation also serves to bring to light - in a new way with respect to the studies on Anerkennung - a hitherto unknown problematic constellation and the input of certain authors, such as Werneburg and Platner, whose conceptions may haveinfluenced Hegel's approach.The second part and the third of my study - a reconstruction of the pre- phenomenological Jena writings dealing with «Anerkennung» - dwells on the theme of the notion of natural recognition, whose centrality for the Hegelian conception of recognition has not yet been adequately grasped. This reconstruction of the theory of natural recognition gives due weight to the influence of Schelling on Hegel's understanding of «Anerkennung» -while the critical literature has generally concentrated on Fichte. Analyzing the conception of the animal organism developed in particular in the lectures on the philosophy of nature of 1803-04 brings to light how Hegel already individuates the recognitive phenomenon at the level of sexual reproduction: it is from here that he posits the natural prerequisites for the development of consciousness of self. The category of natural recognition will present itself anew in Hegel's analysis of the social ontology of the human world in the philosophy of spirit, where it concerns sexual love, reproduction and child raising: natural recognition is, then, that on the basis of which Hegel develops his theory that cognition is recognition.Recognition, as a «middle» of spirit, is a cognitive phenomenon that is primitive with respectto linguistically structured human intersubjectivity; it is, properly, that cognitive structure which is necessarily presupposed by a self-conscious subjectivity that expresses itself linguistically: linguistic intersubjectivity expresses various modes of recognition, but notevery form of recognition is linguistic. The evolutional theory of cognition as recognition is in fact designed to show how increasingly complex recognitive relations emerge from a basic level of natural interactions to take on a linguistically mediated and universal structure. Withthe notion of spiritual recognition Hegel indicates just that ensemble of normative relations that constitute the infrastructure of action and thus mediate the formation of socially articulated self-conscious knowing of self. In the lectures on the philosophy of spirit of 1803-04 and of 1805-06 Hegel thus reconstructs the recognitive structure of the social institutions of right, of labor, and of exchange, showing that, within a politically structured community,dyadic (I-you) interactions are mediated by the universal viewpoint of the "we" incarnated in institutions that can be recognized by citizens as their own and by which citizens can be recognized. (shrink)

In this paper I present experimental data showing that the interpretation of donkey sentences is influenced by certain aspects of world knowledge that seem to elude introspective observation, which I try to explain by reference to a scale ranging from prototypical individuals (like children) to quite marginal ones (such as railway lines). This ontological cline interacts with the semantics of donkey sentences: as suggested already by the anecdotal data on which much of the literature is based, the effect of world (...) knowledge is by and large restricted to donkey sentences with non-intersective determiners. I outline a psychological model which incorporates both ontological and logical factors, and suggest that there may be something wrong with the standard assumption that a statement's receiving a truth value requires that it have a definite reading. (shrink)

In this paper I tackle the normative re-appropriation of the legacy of Charles Taylor's expressivist understanding of Hegel's theory of action. I argue that a normative understanding of Hegel's expressivist notion of agency by interpreters such as Robert Pippin, Terry Pinkard, Michael Quante and Robert Brandom, has been obtained at the price of losing sight of the principle of embodiment and of its relevance for our and Hegel's understanding of social action. I aim at relocating Hegel's notion of expressive embodiment (...) at the core of his explanation of action. Rather than following Taylor's hermeneutical reconstruction of the principle of embodiment, I try to reconstruct it by putting at its core the notion of habit formation with the help of conceptual tools taken from contemporary embodied cognition approaches. I first discuss theAnthropologyand argue that habit, understood as a sensorimotor embodied life form, is not only an enabling condition for agency, but in fact an ontological constitutive condition for all its levels of manifestation. According to this reading, the Hegelian approach to embodiment offers a model that not only assigns to habit a positive constitutive role in the formation of human mindedness, but also overcomes the dualism between habitual motor routine and intentional activities. If we approach Hegel's understanding of agency from this vantage point, we can gain a perspective which allows us to appreciate a naturalist strand of Hegel's expressivism about action and to free it from certain basic anti-naturalistic assumptions of contemporary normative expressivist interpretations of Hegel on social action. (shrink)

Unbelievable Errors defends an error theory about all normative judgements: not just moral judgements, but also judgements about reasons for action, judgements about reasons for belief, and instrumental normative judgements. This theory states that normative judgements are beliefs that ascribe normative properties, but that normative properties do not exist. It therefore entails that all normative judgements are false. -/- Bart Streumer also argues, however, that we cannot believe this error theory. This may seem to be a problem for the (...) theory. But he argues that it makes this error theory more likely to be true, since it undermines objections to the theory and it makes it harder to reject the arguments for the theory. -/- He then sketches how certain other philosophical theories can be defended in a similar way. He concludes that to make philosophical progress, we need to make a sharp distinction between a theory's truth and our ability to believe it. (shrink)

A colorful history of utilitarianism told through the lives and ideas of Jeremy Bentham, John Stuart Mill, and its other founders In The Happiness Philosophers, Bart Schultz tells the colorful story of the lives and legacies of the founders of utilitarianism—one of the most influential yet misunderstood and maligned philosophies of the past two centuries. Best known for arguing that "it is the greatest happiness of the greatest number that is the measure of right and wrong," utilitarianism was developed (...) by the radical philosophers, critics, and social reformers William Godwin, Jeremy Bentham, John Stuart and Harriet Taylor Mill, and Henry Sidgwick. Together, they had a profound influence on nineteenth-century reforms, in areas ranging from law, politics, and economics to morals, education, and women's rights. Their work transformed life in ways we take for granted today. Bentham even advocated the decriminalization of same-sex acts, decades before the cause was taken up by other activists. As Bertrand Russell wrote about Bentham in the late 1920s, "There can be no doubt that nine-tenths of the people living in England in the latter part of last century were happier than they would have been if he had never lived." Yet in part because of its misleading name and the caricatures popularized by figures as varied as Dickens, Marx, and Foucault, utilitarianism is sometimes still dismissed as cold, calculating, inhuman, and simplistic. By revealing the fascinating human sides of the remarkable pioneers of utilitarianism, The Happiness Philosophers provides a richer understanding and appreciation of their philosophical and political perspectives—one that also helps explain why utilitarianism is experiencing a renaissance today and is again being used to tackle some of the world's most serious problems. (shrink)

The Sublime in Schopenhauer's Philosophy transforms our understanding of Schopenhauer's aesthetics and anthropology. Bart Vandenabeele breaks new ground by providing what is probably the first monograph to be devoted exclusively to Schopenhauer's theory of the sublime. The book focuses on Schopenhauer's conception of the sublime and how it relates to the individual and its attitude towards life. The author explores in unusual depth Schopenhauer's relation to Kant, whose follower and critic he was, and shows how Schopenhauer's aesthetic theory moves (...) beyond Kant's in numerous meaningful ways. Drawing on recent insights in psychology and the philosophy of mind, Vandenabeele seeks ultimately to rework Schopenhauer's theory into a viable form so as to establish the sublime as a distinctive aesthetic category with a broader existential and metaphysical significance. (shrink)