A hypothesis about sensorimotor integration (the λ model) is described and applied to movement control and kinesthesia. The central idea is that the nervous system organizes positional frames of reference for the sensorimotor apparatus and produces active movements by shifting the frames in terms of spatial coordinates. Kinematic and electromyographic patterns are not programmed, but emerge from the dynamic interaction among the system s components, including external forces within the designated frame of reference. Motoneuronal threshold properties and proprioceptive inputs to (...) motoneurons may be cardinal components of the physiological mechanism that produces positional frames of reference. The hypothesis that intentional movements are produced by shifting the frame of reference is extended to multi-muscle and multi-degrees-of-freedom systems with a solution of the redundancy problem that allows the control of a joint alone or in combination with other joints to produce any desired limb configuration and movement trajectory. The model also implies that for each motor behavior, the nervous system uses a strategy that minimizes the number of changeable control variables and keeps the parameters of these changes invariant. Examples are provided of simulated kinematic and electromyographic signals from single- and multi-joint arm movements produced by suggested patterns of control variables. Empirical support is provided and additional tests of the model are suggested. The model is contrasted with others based on the ideas of programming of motoneuronal activity, muscle forces, stiffness, or movement kinematics. (shrink)

The appearance of nuclear weapons suddenly made the extinction of humanity a distinct possibility. In view of this obverse side of scientific progress, attitudes toward science in the general population became ambivalent, at times bordering on hostility. It is argued that to a great extent the scientists themselves are responsible for the tarnished image of science. Accordingly they should restore science to its role of furthering human welfare and, above all, as a source of enlightenment. In our age enlightenment entails (...) emancipating humanity from superstitions generated by the cooptation of science in the service of power. (shrink)

The seeming absence of negative evidence in the input that children receive during language acquisition has long been regarded as a serious problem for non-nativist linguistic theories. Among the solutions that have been suggested for this problem, preemption by competing structures is doubtless the most intensively researched and widely accepted. However, while preemption works well in the domain of morphology, it cannot apply categorically in the domain of syntax, as this would preclude the existence of semantically overlapping constructions, such as (...) the ditransitive and the prepositional dative, which can be used alternatively with many, but not all, verbs of literal or metaphorical transfer. This paper investigates one specific version of preemption briefly entertained by Pinker (Language learnability and language development, Harvard University Pressm, 1984), which would account both for the existence of semantically overlapping constructions and for the fact that these constructions may preempt each other in the case of individual verbs. Typically, such pairs of grammatical constructions differ in their information-structural restrictions and speakers tend to choose the construction that best fits a given discourse context; when speakers use a construction even though there is an alternative that fits the discourse context better, children may take this as evidence that the alternative is not available for the specific verb in question. Two corpus studies are presented, comparing the information-structural profile of prepositional dative constructions containing verbs that may alternate between the dative and the ditransitive with the information structural profile of verbs that are restricted to the prepositional dative. For Pinker's preemptive mechanism to be feasible, there should be a clear and systematic difference in the information-structural profile of these two classes of verbs. However, no such difference can be found in actual usage. (shrink)

The information required for perception may be available in the energy arrays that stimulate sensory organs but in a form not directly suitable for the planning and execution of the organism's actions in the environment. The requisite form of information is obtained, with no loss of adequate perception, by representation of sensory stimuli in frames of reference determined by internal control signals producing actions. This process seems evolutionarily advantageous but makes perception essentially non-direct, regardless of the degree of intra- or (...) inter-modal sensory integration. (shrink)

The presented article is an attempt to describe in a synthetic way an own vision of a German front-line soldier of the First World War. It also tries to show an image of some enemies – the French, the British and the Russians. The attempt was made on the basis of recollection material and literary forms created either during or soon after the war. The conclusion is unequivocal – the more contact the authors of the texts had with the opponent, (...) the more balanced image of the enemy they presented in their texts and the less were they prone to overestimate the German soldier. Yet the press material contained a lot of exaggeration. The authors created a haughty and sometimes even superhuman image of the German soldier. At the same time the image of the enemy was inhuman and deserving contempt. (shrink)

Almost anyone seriously interested in decision theory will name John von Neumann's (1928) Minimax Theorem as its foundation, whereas Utility and Rationality are imagined to be the twin towers on which the theory rests. Yet, experimental results and real-life observations seldom support that expectation. Over two centuries ago, Hume (1739–40/1978) put his finger on the discrepancy. “Reason,” he wrote “is, and ought to be the slave of passions, and can never pretend to any other office than to serve and obey (...) them.” In other words, effective means to reach specific goals can be prescribed, but not the goals. A wide range of experimental results and daily life behavior support this dictum. (shrink)

ExcerptWeak government is a negation of liberty.Francis LieberAfter the experiences of the past generation, it should be apparent that all too much of liberal internationalist thinking in America is not “internationalist” in any real sense at all. Internationalism, if it is to have any meaning as a word, must mean peace and cooperation between different nations, which by nature will have not merely different interests that must be reconciled but different political systems that must coexist.

The socialist project is burdened by a history of brutal failures. The authors of the papers collected in this volume are convinced that a democratic and humane socialism is both desirable and possible. They lay out their view of different aspects of this new socialism in this book. Anatole Anton and Richard Schmitt are both the editors and contributors to this book. -/- Select chapters translated into Spanish have appeared in a volume in Barcelona, Spain.

Drawing on the records of an “alcoholism counselling service” launched in the 13th arrondissement of Paris in 1954, this article studies how social work became part of the new scope of psychiatric care for alcohol addiction, at a time when new medical cures were becoming available. The content and structure of patient records, which we analyse in comparison with papers from medical and social work journals, provide an insight into the day-to-day tasks of the social workers, who worked as closely (...) as possible with alcoholic patients and their families. The article shows that the action of the social worker, which became central, although subordinated to that of psychiatric medicine, took on a psychotherapeutic dimension and was characterised by the need to gain the patient’s trust and ensure their adherence to treatment, thus marking a clear inflection in the relationship with beneficiaries. However, social work was still characterised by its constitutive ambiguity; its control and surveillance functions created difficulties, misunderstandings and disputes with the patients and their relatives. (shrink)

This book contains a variety of essays aimed at developing a philosophical defense of public goods against neo-liberal criticisms. Looking at concepts such as collective action, common property, intellectual property and issues such as health, education, welfare, environment, media, cities, and the prison industrial complex.

At the end of the 19th century, violent attacks by so-called anarchists gave the anarchist movement an increased amount of publicity. In the meantime, the success of “scientific socialism” promoted rationality to the rank of a new political doctrine. This article analyses the joint criticism of violence and materialism in the discourse of Gustav Landauer (1870-1919). The German philosopher and revolutionary made an original contribution to anarchism in theorising its incompatibility with violent means of action. He also made a crucial (...) move for the theory of ideas in affirming that reason was not the solution, but often the cause of violence. (shrink)

It remains to summarize the contributions which each of the three disciplines discussed here is making toward the development of a science of man. "Significs" makes a study of the effects on human behavior of the linguistic aspects of the evaluative process, the most distinctly human aspect of the behavior of the human organism. "Mathematical Biophysics" seeks to describe the events associated with evaluative processes in physico-mathematical terms. "Cybernetics" is discovering important invariants common to these processes and others, particularly those (...) observed in man-made machines and in situations which lend themselves to description in thermo-dynamic or statistical (order -- chaos) terms. (shrink)

O leitor encontrará, neste volume, o crítico e o pensador arrojado procurando destrinçar questões filosóficas como o irracionalismo, o homem e a técnica, temas políticos e culturais relacionados ao racismo e à atual cultural das gangs, bem como reflexões estéticas acerca da pseudo-arte e do kitsch, para integrá-los plenamente nos seus contextos filosóficos, sociais e humanos.

The basic concepts of motor control formulated in our target article were derived from specific experiments, a fact which is disregarded in Dalenoort's comments. A purely academic approach to motor control may not result in a clearer understanding of control concepts.

Education projects are frequently given an emancipatory aim. However, this association is far from obvious, even from a theoretical point of view. German philosopher Max Stirner (1806-1856) is generally considered as a forefather of individualistic anarchism. He developed a radical educational thought focused on the emergence of an autonomous self. This article analyses the means and the ends of education according to Stirner in order to identify some of the intrinsic paradoxes of emancipatory education. It also furthers Stirner’s analysis in (...) a confrontation with the practicalities of contemporary education. (shrink)

In relating the problem of comparison to that of conceptualization, Dr. Sjoberg brings into focus a central methodological problem of social science. For to compare is to discover unity in diversity and differences among similarities, that is, to uncover structure. The first act in this process is to name the parts and the relations among them, and naming, of course, both stems from and induces conceptualizations.

Husserl’s analyses of time consciousness have proved to be one of the more intricate challenges of his phenomenology. The article addresses his writings on time consciousness not with the aim of discussing or solving the epstemological problems that arise, but instead is interested in the descriptive procedure with which Husserl approaches them. The concept of ›Darstellung‹ serves as a starting point for this, a concept which Husserl takes up in order to describe the unified constitution of temporal objects ›vis à (...) vis‹ the continuity of their temporal givenness. Thus importing a traditionally poetological-rhetorical vocabulary – in rhetoric ›Darstellung‹ denotes vivid representation in language – into the analysis of temporal consciousness, it points to Husserl’s own descriptive project as potentially working in a similar manner. In Husserl’s writings, a ›Verlaufspoetik‹ (transitory poetics) comes into view, in which the textual flow of the descriptive process seems to match the stream of experience of temporal consciousness. (shrink)

S’appuyant sur les archives du Vorwärts des années 1890 et 1900, cet article analyse la fréquence symptomatique des références de l’organe du Parti social-démocrate allemand à Gustav Landauer, critique cinglant du socialisme marxiste qui entendait « donner au socialisme une nouvelle direction ». Il s’attache à déceler, dans ses dits et ses non-dits, la stratégie mise en œuvre par le Vorwärts de délégitimation de l’anarchisme et de monopolisation de la définition même du socialisme. Mais derrière l’entreprise de caricature et de (...) dénigrement, il montre aussi combien la controverse entre le Vorwärts et « l’inévitable Landauer » est révélatrice d’une série de désaccords structurels et fondamentaux sur la conception de l’histoire, de la société, de l’expérimentation et du changement social. (shrink)