This review evaluates pros and cons of the schema theory as a general framework for expressing what Arbib et al. call “systems neuroscience.” We discuss the software/hardware duality of the schema concept and the relative neglect of the mechanical properties of muscles. We propose a computational alternative to the functional decomposition in terms of schemas.

Generalizing the notion that muscles are positional frames of reference, a high-dimensional muscle space is defined for multi-muscle systems with an embedded low-dimensional motor manifold of functional articulators. A central representation of such a manifold is proposed as computational body schema. The example of the jaw-tongue system is presented, discussing the relation of functional articulators with kinematic invariances and control problems.

In field computing a topologic organization of CFs is necessary to support sensorimotor planning. A simple model of cortical dynamics can exploit such topologic organization.

A deep investigation of proprioceptive processes is necessary to understand the relationship between sensory afferent inputs and motor outcomes. In this work, we investigate whether and how perception of wrist position is influenced by the direction along which the movement occurs. Most previous studies have tested Joint Position Sense through 1 degree of freedom wrist movements, such as flexion/extension or radial/ulnar deviation. However, the wrist joint has 3-DoF and many activities of daily living produce combined movements, requiring at least 2-DoF (...) wrist coordination. For this reason, in this study, target positions involved movement directions that combined wrist flexion or extension with radial or ulnar deviation. The chosen task was a robot-aided Joint Position Matching, in which blindfolded participants actively reproduced a previously passively assumed target joint configuration. The JPM performance of 20 healthy participants was quantified through measures of accuracy and precision, in terms of both perceived target direction and distance along each direction of movement. Twelve different directions of movement were selected and both hands tested. The left and right hand led to comparable results, both target extents and directions were differently perceived according to the target direction on the FE/RUD space. Moreover, during 2-DoF combined movements, subjects’ perception of directions was impaired when compared to 1-DoF target movements. In summary, our results showed that human perception of wrist position on the FE/RUD space is symmetric between hands but not isotropic among movement directions. (shrink)

Proprioception has a crucial role in promoting or hindering motor learning. In particular, an intact position sense strongly correlates with the chances of recovery after stroke. A great majority of neurological patients present both motor dysfunctions and impairments in kinesthesia, but traditional robot and virtual reality training techniques focus either in recovering motor functions or in assessing proprioceptive deficits. An open challenge is to implement effective and reliable tests and training protocols for proprioception that go beyond the mere position sense (...) evaluation and exploit the intrinsic bidirectionality of the kinesthetic sense, which refers to both sense of position and sense of movement. Modulated haptic interaction has a leading role in promoting sensorimotor integration and it is a natural way to enhance volitional effort. Therefore, we designed a preliminary clinical study to test a new proprioception-based motor training technique for augmenting kinesthetic awareness via haptic feedback. The feedback was provided by a robotic manipulandum and the test involved 7 chronic hemiparetic subjects over three weeks. The protocol included evaluation sessions, that consisted of a psychometric estimate of the subject’s kinesthetic sensation, and training sessions, in which the subject executed planar reaching movements in the absence of vision and under a minimally assistive haptic guidance made by sequences of graded force pulses. The bidirectional haptic interaction between the subject and the robot was optimally adapted to each participant in order to achieve a uniform task difficulty over the workspace. All the subjects consistently improved in the perceptual scores as a consequence of training. Moreover, they could minimize the level of haptic guidance in time. Results suggest that the proposed method is effective in enhancing kinesthetic acuity, but the level of impairment may affect the ability of subjects to retain their improvement in time. (shrink)

This paper considers the complex relation between migrants’ interest in their host country and their consequent civic or social engagement in the framework of processes of transition following the rupture of international migration (cf. Zittoun 2006). In phases of transition, migrants live processes of identity definition, sense-making of the situation and learning new knowledge and social, cognitive and practical skills. I argue that learning may be considered a precondition for a migrant’s interest and engagement with the host country culture and (...) institutions. In this connection, I use Eade’s (2007) notion of migration strategy to describe migrant profiles based on learning. My case is supported by a qualitative analysis of two paradigmatic case studies. (shrink)

This paper sets out to explore the relation between social argumentation and inner debate by taking into account suggestions from argumentation studies and from social and discursive psychology. It develops Dascal’s (2005) claim that there are metonymical and structural relations between the two realms of debate by substantiating it with data taken from international migrants’ inner debates at moments of difficult decisions. The data are drawn from the experience of migrating mothers who have to decide whether to go back or (...) to remain in their host country (the UK). I show that others are present in migrants’ multivoiced decisions in two important senses: first, inner debates can be reconstructed as critical discussions (van Eemeren and Grootendorst 1984). Second, the locus from analogy has the special function of allowing the comparison between the migrant’s experience and someone else’s experience. (shrink)

This paper sets out to explore the relation between social argumentation and inner debate by taking into account suggestions from argumentation studies and from social and discursive psychology. It develops Dascal’s claim that there are metonymical and structural relations between the two realms of debate by substantiating it with data taken from international migrants’ inner debates at moments of difficult decisions. The data are drawn from the experience of migrating mothers who have to decide whether to go back or to (...) remain in their host country. I show that others are present in migrants’ multivoiced decisions in two important senses: first, inner debates can be reconstructed as critical discussions. Second, the locus from analogy has the special function of allowing the comparison between the migrant’s experience and someone else’s experience. (shrink)

This paper aims at clarifying the ontology of conflict as a preliminary for constructing a conflict mapping guide. After recalling the main definitions elaborated in different disciplines, the meaning of conflict is elicited through semantic analysis based on corpus evidence. Two fundamental meanings emerge: conflict as an interpersonal hostility between two or more human subjects, and conflict as a propositional incompatibility. These two states of affairs are significantly related, because the latter tends to generate the former whenever the incompatible positions (...) are embodied by as many parties who feel personally questioned. The semantic analysis allows to sketch the ontology of the conflictual situation that can serve to generate a conflict mapping guide, and to face several crucial aspects that are relevant both to the study and to the management of conflicts. In the former perspective, it allows for a comparison of the situation of interpersonal conflict with the seemingly similar process of controversy. (shrink)

This paper focuses on the inferential configuration of arguments, generally referred to as argument scheme. After outlining our approach, denominated Argumentum Model of Topics (AMT, see Rigotti and Greco Morasso 2006, 2009; Rigotti 2006, 2008, 2009), we compare it to other modern and contemporary approaches, to eventually illustrate some advantages offered by it. In spite of the evident connection with the tradition of topics, emerging also from AMT’s denomination, its involvement in the contemporary dialogue on argument schemes should not (...) be overlooked. The model builds in particular on the theoretical and methodological perspective of pragma-dialectics in its extended version, reconciling dialectic and rhetoric; nevertheless, it also takes into account numerous other contributions to the study of argument schemes. Aiming at a representation of argument schemes able to monitor the inferential cohesion and completeness of arguments, AMT focuses on two components of argument scheme that could be distinguished, readapting pragma-dialectical terms, as procedural and material respectively. The procedural component is based on the semantic-ontological structure, which generates the inferential connection from which the logical form of the argument is derived. The material component integrates into the argument scheme the implicit and explicit premises bound to the contextual common ground (Rigotti 2006). In this paper, the comparison of the AMT to other approaches focuses on the inferential configuration of arguments and not on the typologies of argument schemes and on the principles they are based on, which the authors intend to tackle in a further paper. (shrink)

This paper aims at clarifying the ontology of conflict as a preliminary for constructing a conflict mapping guide. After recalling the main definitions elaborated in different disciplines, the meaning of conflict is elicited through semantic analysis based on corpus evidence. Two fundamental meanings emerge: conflict as an interpersonal hostility between two or more human subjects, and conflict as a propositional incompatibility. These two states of affairs are significantly related, because the latter tends to generate the former whenever the incompatible positions (...) are embodied by as many parties who feel personally questioned. The semantic analysis allows to sketch the ontology of the conflictual situation that can serve to generate a conflict mapping guide, and to face several crucial aspects that are relevant both to the study and to the management of conflicts. In the former perspective, it allows for a comparison of the situation of interpersonal conflict with the seemingly similar process of controversy. (shrink)

By presenting a case study based on the argumentative analysis of news in the press, this article introduces and discusses strategic manoeuvring with contextual frames. Drawing on the linguistic notion of frame, I introduce the concept of contextual frame to refer to the news context, that is, the background against which a certain event is presented as a piece of news. I argue that newspapers and journalists make use of contextual frames in the apparently neutral genre of news reporting to (...) propose specific interpretations of the facts at issue, which become the basis for explicit comments and editorials. To show how this works, I investigate in detail a case of newspaper coverage of a complex episode using the pragma-dialectical notion of strategic manoeuvring and the Argumentum Model of Topics to analyse argument schemes. I show that, in the use of contextual frames, there is a prominent relation between presentational devices and topical potential; contextual frames provide the implicit material premises which are at the basis of argumentations through which newspapers interpret and comment on the news. (shrink)

Orthodox decision theory is fanatical in the way it treats small probabilities of enormous value, if unbounded utility functions are allowed. Some have suggested a fix, Nicolausian discounting, according to which outcomes with small enough probabilities should be ignored when making decisions. However, there are lotteries involving only small-probability outcomes, none of which should intuitively be ignored. So the Nicolausian discounter needs a procedure for distinguishing the problematic cases of small-probability outcomes from the unproblematic ones. In this paper, I present (...) a dilemma for Nicolausian discounting: the view must be coupled either with a procedure that delivers fanatical verdicts of its own, as bad as those of orthodox decision theory, or with one that entails intransitive cyclic preferences. (shrink)

The Handbook of Formal Argumentation is a community effort aimed at providing a comprehensive and up-to-date view of the state of the art and current trends in the lively research field of formal argumentation. The first volume of the Handbook is organised into five parts, containing nineteen chapters in all, each written by leading experts in the field. The first part provides a general and historical perspective on the field. The second part gives a comprehensive coverage of the argumentation formalisms (...) available in the literature at various levels of abstraction. The third part is devoted to cover some of the many dialogical aspects of argumentation, while the fourth one deals with algorithmic, computational and implementation issues. Finally, the fifth part provides some deeper analyses on the previously introduced topics. The Handbook of Formal Argumentation is an open-ended initiative of which the present volume is the first outcome. Further volumes are planned to cover topics not included in the present one and the initiative is conceived to grow by the support and feeding it receives from the community members. (shrink)

This paper presents a novel argumentation framework to support Issue-Based Information System style debates on design alternatives, by providing an automatic quantitative evaluation of the positions put forward. It also identifies several formal properties of the proposed quantitative argumentation framework and compares it with existing non-numerical abstract argumentation formalisms. Finally, the paper describes the integration of the proposed approach within the design Visual Understanding Environment software tool along with three case studies in engineering design. The case studies show the potential (...) for a competitive advantage of the proposed approach with respect to state-of-the-art engineering design methods. (shrink)

Creating an integrated design space can be successful only if researchers agree on how to define and measure a certain phenomenon of interest. Adversarial collaborations and mathematical modeling can aid in reaching the necessary level of agreement when researchers depart from different theoretical perspectives.

En la actualidad el pensamiento de Maquiavelo ha estado ligado a una praxis política que se juzga como mala desde el punto de vista ético. El secretario florentino, alejándose de la tradición estoica que marcó la filosofía política de la antigüedad y gran parte del medioevo, separa la política de la moral planteando un realismo político que evalúa los actos como eficientes o ineficientes, útiles o inútiles, fructíferos o infructíferos, tomando distancia de aquella calificación de bueno o malo. Sin embargo, (...) este simple acto, que no es más que la teorización y la explicitación de algo que se ha hecho desde siempre en la historia política, le valió ser tildado de hereje o que incluso su apellido se transformase en un término que hasta el día de hoy tiene una carga negativa en términos morales. Este artículo se adentra en aquellas interpretaciones, elementos históricos, teológicos y filosóficos del pensamiento de Maquiavelo, que con o sin intención, llevaron a que el secretario florentino fuera entendido como un pensador que hace apología de las malas praxis, acercándolo incluso a ideas heréticas. Palabras clave_: _Maquiavelo– Antimaquiavelismo - Realismo político – Herejía. (shrink)

This paper aims at comparing and relating belief revision and argumentation as approaches to model reasoning processes. Referring to some prominent literature references in both fields, we will discuss their (implicit or explicit) assumptions on the modeled processes and hence commonalities and differences in the forms of reasoning they are suitable to deal with. The intended contribution is on one hand assessing the (not fully explored yet) relationships between two lively research fields in the broad area of defeasible reasoning and (...) on the other hand pointing out open issues and potential directions for future research. (shrink)

Wilfrid Sellars’ denunciation of the Myth of the Given was meant to clarify, against empiricism, that perceptual episodes alone are insufficient to ground and justify perceptual knowledge. Sellars showed that in order to accomplish such epistemic tasks, more resources and capacities, such as those involved in using concepts, are needed. Perceptual knowledge belongs to the space of reasons and not to an independent realm of experience. Dan Hutto and Eric Myin have recently presented the Hard Problem of Content as an (...) ensemble of reasons against naturalistic accounts of content. In a nutshell, it states that covariance relations—even though they are naturalistically acceptable explanatory resources—do not constitute content. The authors exploit this move in order to promote their preferred radical enactivist and anti-representationalist option, according to which, basic minds—the lower stratum of cognition—do not involve content. Although it is controversial to argue that the Hard Problem of Content effectively dismisses naturalistic theories of representation, a central aspect of it—the idea that information as covariance does not suffice to explain content—finds support among the defenders of classical cognitive representationalism, such as Marcin Miłkowski. This support—together with the acknowledgment this remark about covariance is a point already made by Sellars in his criticism of the Myth of the Given—has a number of interesting implications. Not only is it of interest for the debates about representationalism in cognitive science, where it can be understood as an anticipatory move, but it also offers some clues and insights for reconsidering some issues along Sellarsian lines—a conflation between two concepts of representation that is often assumed in cognitive science, a distinction between two types of relevant normativities, and a reconsideration of the naturalism involved in such explanations. (shrink)

We discuss the role of perceptron (or threshold) connectives in the context of Description Logic, and in particular their possible use as a bridge between statistical learning of models from data and logical reasoning over knowledge bases. We prove that such connectives can be added to the language of most forms of Description Logic without increasing the complexity of the corresponding inference problem. We show, with a practical example over the Gene Ontology, how even simple instances of perceptron connectives are (...) expressive enough to represent learned, complex concepts derived from real use cases. This opens up the possibility to import concepts learnt from data into existing ontologies. (shrink)

Reciprocal libertarianism is a version of left-wing libertarianism that combines self-ownership with an egalitarian distribution of resources according to reciprocity. In this paper, I show that reciprocal libertarianism is a coherent and appealing view. I discuss how reciprocal libertarians can handle conflicts between self-ownership and reciprocity, and I show that reciprocal libertarianism can be realised in a framework of individual ownership of external resources or in a socialist scheme of common ownership (libertarian socialism). I also compare reciprocal libertarianism with left-libertarian (...) approaches: I argue that a reciprocity-sensitive version of left-libertarianism (reciprocal left-libertarianism) is coherent and morally superior to traditional left-libertarianism, on grounds of incorporating a distinctively solidaristic and recognition-oriented aspect of equality. The policy implications of reciprocal libertarianism will differ depending on which rights people can have over external resources, but all reciprocal libertarian views acknowledge the existence of social rights that people have as co-operators. (shrink)

This paper investigates the relations between the concepts of moral harm and moral responsibility, arguing for a circularity between the two. On this basis the conceptual soundness of descriptivism, on which consequentialist and non-consequentialist arguments are often grounded, is questioned. In the last section a certain version of ascriptivism is defended: The circularity is relevant in order to understand how a restricted version of ascriptivism may in fact be well founded.

As François Lambert experimented with religious identity in his passage from the Franciscan Observance to Lutheran Reform, he presents a valuable witness to the processes of identity formation and self-understanding in a period of religious turmoil that was still open to many different solutions. From 1522 to 1530 his choices led him from Avignon to Genève, Lausanne, Bern, Zurich, Basel, Wittenberg, Metz, Strasbourg, Marburg, in a life marked by projects of reform and moments of fear, illusions and delusions, success and (...) failure. Lambert wrote a type of autobiography of this itinerary, which is traceable from his first work composed in Wittenberg until the very last letter that he wrote a few days.. (shrink)